#14 "A Fresh Pair of Eyes" - Super Challenging C64 Black Screen Repair
Рет қаралды 17,979
5 жыл бұрынA long video for me, but fitting since the repair of this 'black screen' C64 took a very long time. Things were looking pretty grim for a bit but someone special had my back.
🔔 SUBSCRIBE TO & FOLLOW APHEXTEKNOL
```````````````````````````````````````````````````````````````````````````````````
► KZfaq: kzfaq.info...
► Twitter: search?q=aphexteknol
📺 RELATED VIDEOS
```````````````````````````````````````````````````````````````````````````````````
► Installing ZIF Sockets on a C64 --- bit.ly/MFR-YT-11
🛒 BUY STUFF*
```````````````````````````````````````````````````````````````````````````````````
► DeoxIT D5 -- ebay.to/2V94xAL -- Amazon.com
► TESLANOL T6 -- amzn.to/2Vjb9wk -- Amazon.de
*These are Affiliate Links and do not increase the price of items but do help the
channel by providing a small monetary compensation by the vendors
💚 KINDLY CONSIDER SUPPORTING MY CHANNEL
```````````````````````````````````````````````````````````````````````````````````
► Become a Patron: www.patreon.com/MindFlareRetro
► Buy me a coffee: www.ko-fi.com/MindFlareRetro
► PayPal donation: www.paypal.me/MindFlareRetro
► Buy MFR Merch: bit.ly/mfr-yt-merch
► Order from PCBWay: bit.ly/mfr-pcbway
💬 JOIN THE CONVERSATION ON DISCORD
```````````````````````````````````````````````````````````````````````````````````
► MindFlareRetro Discord Invite --- / discord
✔ Share this video: bit.ly/MFR-YT-14
✔ Subscribe to my Channel: bit.ly/MFRetroYTSub
✔ Follow me on Twitter: / mindflareretro
All C64 chiptune music composed by Mermaid *𝘜𝘴𝘦𝘥 𝘸𝘪𝘵𝘩 𝘱𝘦𝘳𝘮𝘪𝘴𝘴𝘪𝘰𝘯
· 0𝑙𝑑𝑠𝑘00𝑙 𝐼𝑛𝑡𝑟𝑜𝑡ℎ𝑒𝑚𝑒 [𝑀𝑒𝑟𝑚𝑎𝑖𝑑, 2001]
· 𝐶𝑇𝑅 𝑇ℎ𝑒𝑚𝑒 [𝑀𝑒𝑟𝑚𝑎𝑖𝑑, 1998]
· 𝐷𝑟𝑜𝑝𝑜𝑢𝑡 [𝑀𝑒𝑟𝑚𝑎𝑖𝑑, 2007]
· 𝐸𝑛𝑑𝑇ℎ𝑒𝑚𝑒 [𝑀𝑒𝑟𝑚𝑎𝑖𝑑, 1997]
· 𝐽𝑜𝑛𝑎𝑡ℎ𝑎𝑛 [𝑀𝑒𝑟𝑚𝑎𝑖𝑑, 2003]
· 𝐾𝑒𝑓𝑖𝑟 [𝑀𝑒𝑟𝑚𝑎𝑖𝑑, 2000]
· 𝑀𝑎𝑑𝑛𝑒𝑠𝑠_𝐼𝐼 [𝑀𝑒𝑟𝑚𝑎𝑖𝑑, 1998]
· 𝑆𝑢𝑛𝑚𝑖𝑥 [𝑀𝑒𝑟𝑚𝑎𝑖𝑑, 1995]
#MindFlareRetro #C64 #Repair
@jonmarler 2 жыл бұрын
@5:06 - "That's some serious Jurassic Park amber there" LOLOLOL. I'm hooked.
@MindFlareRetro 2 жыл бұрын
Haha. Thanks very much.
@aphexteknol 5 жыл бұрын
So I was sitting here wondering why all of a sudden I was getting tons of new subscribers. The Project Geek kindly informed me that it might have something to do with MindFlare Retro’s new video, and he was right! Honored to have been involved in such a herculean C64 repair effort, and I’m always keen to lend a hand.
@MindFlareRetro 5 жыл бұрын
Happy you reached out to assist at the time. I am in your debt. Your subs >>> up 27 in the two hours since posting at 12:00 PM ET (subs was at 413) -- I've been keeping an eye on it. 🧐
@aphexteknol 5 жыл бұрын
MindFlareRetro I’m used to getting like 5 new subscribers a week at the most, not in 5 minutes! Now I’m going to have to make some new content to appease all the new subs aren’t I? :)
@LeftoverBeefcake 5 жыл бұрын
Excellent video, gentlemen. May the Lord Jack Tramiel bless you and smile upon you both from his office in the sky for keeping up with Commodores, so our Commodores can continue to keep up with us. :D
@MindFlareRetro 5 жыл бұрын
Thank you, as always, @LeftoverBeefcake. Videos from you soon?
@LeftoverBeefcake 5 жыл бұрын
I actually shot some footage for a video, and have part of a script... the challenge lies in putting it all together so that it makes sense and is entertaining. :P You guys make it look so easy!
@peterlinddk 3 жыл бұрын
Excellent video - KZfaq randomly suggested it to me, a week after having a bit of a similar problem myself (half of the ram chips, U25, U14 and three solderpads without connectivity). I like that it shows the “second pair of eyes”, but also that it can be interpreted as “any problem with the C64 can be solved - you just have to replace every single chip, and test connectivity on every single trace on the PCB. Simple as that 😀!!”
@MindFlareRetro 3 жыл бұрын
Hi Peter. Thanks for watching and for commenting. I am happy to here that you found my channel and that you enjoyed the video. Yes, I think it's fair to say that unless a C64 motherboard is physicaly broken/cracked it _is_ repairable. It might require a lot of patience and several sets of eyes, but they definitely can be brought back to life. Thanks again for commenting!
@8_Bit 5 жыл бұрын
Welcome back, and it's awesome to have you teaming up with Mitchell. Fun shot at 3:27 with the moving labels, nice work!
@MindFlareRetro 5 жыл бұрын
Thank you, sir. I'm trying to keep the visuals fresh for you! I was considering a talking hand homage, but I'll save that for another video. ;)
@morrisferlito7630 2 жыл бұрын
After seeing the video, its nice to see there is someone that shares the same interest as me and lives close to me. I live in Mississauga and have always been into retro computing. I have several C64's, Vic20, Timex1000 (ZX81), IBM XT, AT and monitors. Thanks for your great videos.
@MindFlareRetro 2 жыл бұрын
Hi Morris. Nice to meet you, neighbour. You might be interested in chceking out the MFR Discord. There are a lot of GTA and KW retro and vintage computer aficionados there. It's a great group to mingle with. Check it our here, discord.gg/7MZUcqq.
@morrisferlito7630 2 жыл бұрын
@@MindFlareRetro Thanks, I just joined under the user name Electro Moe.
@75slaine 5 жыл бұрын
Finally. Empires have risen and fallen since your last video 😉. Seriously though, great video. As someone very new to learning how to restore retro hardware, my stomach turned when I saw those pads. Great to see this repair making over the line. Well done both of you.
@MindFlareRetro 5 жыл бұрын
LOL. Thanks for your patience. I hope it was worth the wait.
@75slaine 5 жыл бұрын
MindFlareRetro of course, quality work as always
@aphexteknol 5 жыл бұрын
I just wanted to add, that I’m super jealous of your Super Zaxxon cartridge. Or should I say “SUUUPER ZAXXON!”
@MindFlareRetro 5 жыл бұрын
Thanks. I scored that locally last summer.
@klausstock8020 4 жыл бұрын
Same here. Well, it's a crappy game, but it has become the holy grail for everyone even vaguely interested in C64 repairs. Incidentally, I was actually soldering together my own Super Zaxxon replica while watching this video - I had just received the last missing part (had become tired of waiting, had to get it locally, paid too much....had a déjà vu while watching this video...). My replica is meant for experimentation and testing, butt-ugly, no case, and with two ZIF sockets for the TTL ICs so changing them from LS to HCT or HC is fast and easy. Still, just a 100ns 27C256; I guess the original ROMs were slower. However, the ZIF sockets should also allow me add load capacitors to delay OE a little bit.
@AmigaLove 5 жыл бұрын
Man - gotta love it when you see the main chips are socketed like that. Bread-BIN for the WIN! Dude - got some ASMR vibes when you went into hyper-speed mode with the snap crackle and pop. :)
@MindFlareRetro 5 жыл бұрын
LOL. I to re-record several voiceover lines - my mouth was a little too close to the mic for my audio taste. ;)
@lostindesolation2810 5 жыл бұрын
When dealing with stuck lines I usually find it helpful to interrupt the stuck signal by removal of chips while probing, to narrow down the fault, since the fault otherwise show up along the entire line. I recently managed to identify a faulty logic ic that way. Great video, and I can totally relate to the frustration involved.
@MindFlareRetro 5 жыл бұрын
Hi. Great advise - thank you. I'm still learning, obviously. Thanks for the commenting and for the positive feedback.
@RetroViator 4 жыл бұрын
I love the classic 80s troubleshooting montage in the middle of the video.
@MindFlareRetro 4 жыл бұрын
Haha. Thanks. I try to make these video as entertaining as possible. Thanks for watching and for commenting.
@nickolasgaspar9660 3 жыл бұрын
lol you are generous for taking the blame. The Commodore boards are known for their bad quality and that specific one appears to be pre-cooked
@MindFlareRetro 3 жыл бұрын
Haha. Yeah, I often take these tough repairs a bit too personally. This board was very well baked before I got my hands on it. Thanks for watching and for commenting!
@konturgestalter 3 жыл бұрын
your style of editing and commenting is hilarious. loved watching it
@MindFlareRetro 3 жыл бұрын
Thank you very much. Not always sure if people get my sense of humour. Thanks for watching and for the positive feedback.
@bwack 5 жыл бұрын
I feel with you on the difficulty was sky high on this one. Diagnosing is usually the fastest way to find the fault, but how do you diagnose when so many faults are affecting each others. Great work Aphexteknol also :)
@MindFlareRetro 5 жыл бұрын
Thanks, @bwack. You and @GadgetUK164 were my first KZfaq C64 repair heros, so I always appreciate your invaluable feedback.
@AlainHubert 5 жыл бұрын
Great electronic troubleshooting video ! But I can't help but to think to myself: since Commodore has produced and sold over 15 million units of the C-64, wouldn't it be more cost effective to find one in good working condition than to repair any of them ? Especially when it's difficult like this ? But then again, it wouldn't be as interesting to watch as this. Thanks for sharing.
@MindFlareRetro 5 жыл бұрын
Hi Alain. This is a great question. Yes, I agree with that if one is looking for a C64 or other retro computer just to have in their collection. For me, though, it is the enjoyment of reviving them whenever humanly possible. It is a satisfying hobby for me (and others) to bring them back to life and be able to pass on to another retro computer enthusiast to enjoy. THanks very much for watching and for commenting! /\/\FR
@spaceboyg78 5 жыл бұрын
Way to go with getting this C64 operational again. Loved the fly overs and post production involved. Keep up the good work!
@MindFlareRetro 5 жыл бұрын
Thank you very much. I appreciate the positive feedback.
@aphexteknol 5 жыл бұрын
MindFlareRetro I’m going to try to hire MindFlare to do post-production on my videos. Think I can pay him in SID chips? :)
@MindFlareRetro 5 жыл бұрын
@@aphexteknol Deal!!!
@Plan-C 5 жыл бұрын
Good stuff. Well done for hanging in there!
@MindFlareRetro 5 жыл бұрын
Hey, @PlanC. Thanks very much for watching.
@glen4cindy 4 жыл бұрын
Awesome video. I'd hate to think what a repair like this would cost.
@MindFlareRetro 4 жыл бұрын
Thanks, Glen. Apologies for the late reply. The cost of this repair was pretty much compensation for the parts which where not too expensive. It's more for the joy of fixing them.
@c64customs 5 жыл бұрын
Very nice, tag-team style got it done!
@MindFlareRetro 5 жыл бұрын
Thanks very much for watching and for commenting. I always enjoy your videos but I am a little bit behind in watching your last two. I hope to rectify that soon.
@JanBeta 5 жыл бұрын
Wow, what an adventure! Well done, both of you. Exceptional video making skills, too, as usual. I am now secretly plotting to send the Aldi C64 board that still gives me headaches over to aphexteknol, too... ;)
@MindFlareRetro 5 жыл бұрын
Thanks, Jan. I am sure @aphexteknol would love to look over your problem Aldi C64, and I am sure your would also receive back a lovely typed note reply created on a vintage typewriter. ;)
@TheHighlander71 5 жыл бұрын
Wow, two of my favourite commodore repair Titans collaborating on a c64 repair video. You did so much of the work in figuring out what the faults were, it's good to have an extra set of eyes giving it a look over. Really enjoyed this video. Very informative and entertaining.
@MindFlareRetro 5 жыл бұрын
Thanks for your kinds words, Wouter. Not sure if I qualify as a repair titan (as was pointed out in the comments 😁) - I fit more in the retro repair knucklehead category. 😉 Sadly, I am still playing catch-up with your most recent videos but hope to rectify that soon. Thanks for commenting.
@TheHighlander71 5 жыл бұрын
@@MindFlareRetro Anyone who can tackle a problem as tough as this one is a c64 grand wizard to me. And you made a good looking video too (how did you manage to move those chip names at the start?) I've tried repairing c64s, but I'm the knucklehead, believe me. Just today I chatted with a 17 year old wanting to get into c64 gaming. These young fellas need videos to help them repair their c64s when the time comes.
@MindFlareRetro 5 жыл бұрын
@@TheHighlander71 Well, thank you, again. My video editing software has an image tracking function. It's not the easiest thing to use, but basically you can have it track a point in the video and then you can attach an object (image, text, etc.) that stays in place for the most part as the video rolls. A bit gimmicky, but fun to use once in a while.
@TheHighlander71 5 жыл бұрын
@@MindFlareRetro Right. I use Adobe Premiere and it has so many options, this may be one of them. I can't say that I've seen much use for image tracking, but now that I'm aware it exists I'll probably find a need for it :)
@MindFlareRetro 5 жыл бұрын
I try to keep its use to a minimum, plus I'm still trying to master it. It looks like Premiere Pro does have some form of motion tracking, kzfaq.info/get/bejne/l7h5ZMabspe5eHk.html. DaVinci Resolve by Blackmagic Design (which is actually a free pro video editing software that I, too, have been meaning to try) has more advanced tracking functionality.
@Gahmuret 5 жыл бұрын
Good job to both of you! This really was a tough one.
@MindFlareRetro 5 жыл бұрын
Thank you very much. It was a challenge, but when the retro community has your back everything is fixable. Thanks for commenting.
@ChristopherNelson2k 5 жыл бұрын
Great video! Really dig the effort you put in to add effects and even a bit of potty humor (hur hur). I've found that if the screw doesn't turn with a slight bit of torque, a few seconds of 300c soldering iron on the screw cap and they usually give without damaging the post. YMMV but that works for me most of the time.
@MindFlareRetro 5 жыл бұрын
That's great advice - I've never heard of that technique before but will add it to my bag of tricks. In the case of this C64, the posts were already broken off and nowhere to be found.
@chinesepopsongs00 3 жыл бұрын
Fun to watch this as i was repairing several dozens of these computers in the early 90's sometimes i had like 10 boards each day. I never used the desolder gun when i knew a ic was dead i always cut all pins and gently wicked all holes as pads where lifting from the bad quality boards back then also. There where however boards (don't remember the revision) that where visually a lot better the copper was at least double the thickness and never lifted. The silk screen of these boards was also very different they covered like 95% of the board in sort of a grid pattern. The company i worked for back in the days made PLC's out of the comodore 64 boards.
@MindFlareRetro 3 жыл бұрын
Hi Leon. Wow, great story! 10 boards a day - that's a lot of practice. You must be a C64 repair master. Thanks for the repair tips - I will follow your lead and use these techniques on my future repairs. Thank you for sharing your stories.
@console 5 жыл бұрын
Loved the voice over quality and overall pacing. Great work. Thank you!
@MindFlareRetro 5 жыл бұрын
Thanks for the feedback. But, of course, I cringe at the sound of my own voice.
@bwack 5 жыл бұрын
Welcome back, Mark !! Man you've got skils! I love the many angles and editing here ! Wow 100C ram chips !
@MindFlareRetro 5 жыл бұрын
Thank you. Yes, those DRAM chips were extra toasty.
@MrMaxeemum 5 жыл бұрын
Excellent, Glad you could swallow your pride and admit defeat. Given more time I am sure you would have got there, excellent tag team work from both of you. The main thing is that another one gets to live another day and give it's owner happiness. Thumbs up.
@FlyingSurprise 5 жыл бұрын
Thank you for not giving up on this one!
@MindFlareRetro 5 жыл бұрын
Thanks for commenting. I play up the frustration a little bit, but I would never give. 😉
@411pete 5 жыл бұрын
A truly epic repair, great job mate!
@MindFlareRetro 5 жыл бұрын
Thanks very much. It was pretty crazy but with persistence, we prevailed.
@game_whisperer1606 5 жыл бұрын
Very interesting video and thorough repair. Plus I learned of a new channel. Keep up the good work, always like your high production values and that you show human errors as part of a repair.
@MindFlareRetro 5 жыл бұрын
Thank you, sir. I try to make it as "entertaining" as I can, and yes, I am chock-full of human errors.
@gonzobizarro 3 жыл бұрын
You are This Old Tony of retro channels, instant sub from me ;) I wish I had stumbled upon your channel much earlier.
@MindFlareRetro 3 жыл бұрын
Thanks. That is quite the compliment. I am glad you found my channel -- welcome!
@umutk5614 5 жыл бұрын
Great pleasure to watch and learned lot of new things. Thanks.
@MindFlareRetro 5 жыл бұрын
Thanks Umut! I always appreciate your support and feedback.
@chris537a 5 жыл бұрын
Thats my dude in dayton. Im sure aphexteknol can tell you stories about us with that last find. Kind weird seeing those 100 commodore 64's in peoples homes that really wanted them. Not a single one got sold on ebay. I think thats why the bbs scene is blowing up again. I only have about 25 left to repair and im done. about out of parts though. hehehe
@retrohaxblog 5 жыл бұрын
Great and rich in details video! It really shows how much work is required to fix stubborn boards sometimes :) I just wanted to add that these kinds of problems are way more common in Europe so it wasn't that bad after all ... believe me :D Congrats on this repair :D
@MindFlareRetro 5 жыл бұрын
Thanks. It's good to hear that I'm not alone coming across crazy repairs like this. Thanks for watching and for commenting!
@GregMcCarthyUK 5 жыл бұрын
Great indepth video of the repair. Will be very handy in future. Subbed.
@MindFlareRetro 5 жыл бұрын
Hey Greg! Thanks for the positive feedback, and thanks very much for the sub!
@MrGeekGamer 5 жыл бұрын
09:00 I have the same monitor and am having the same symptoms. Looking forward to that repair video!
@MindFlareRetro 5 жыл бұрын
Oh, ya? You too? From my preliminary research it is likely just a bad capacitor or two. Stay tuned for the repair attempt.
@ikubex9425 5 жыл бұрын
Woot woot!! Two awesome people in one amazing video! 😁👍
@MindFlareRetro 5 жыл бұрын
Thanks, Tony!!!
@ProjectGeek1 5 жыл бұрын
Quick! Boil water on the RAM so Neil @retromancave can make tea.
@MindFlareRetro 5 жыл бұрын
I know, right? Was crazy hot.
@dLLund 3 жыл бұрын
thank you for posting. new sub. tag team wrestling, and the good guys persisted and won. take care and stay safe.
@MindFlareRetro 3 жыл бұрын
You said it! Thanks for watching and for your kind feedback.
@doktor6495 5 жыл бұрын
Hey mindflare, I absolutely feel with you. Finding the fault on a sick PCB is horrible! What I learned in the past few years of repairing C64s... Measure All Supply & GND pins on ALL the ICs. And measure ALL address, data & CS, WR, EN pins at ALL ICs! It`s worth it. If you like, feel free to have a look on my latest KZfaq videos, they show exactly that kind of measurements. But the most important... You saved another C64 from the trash... Happy end! 😉 @aphexteknol... Subscribed! Best regards to all 8-Bit-Computer fans! Your Doktor64!
@MindFlareRetro 5 жыл бұрын
Thanks Dok! I just subbed to your channel -- now i need to brush up on my German.
@doktor6495 5 жыл бұрын
Hi! Maybe your german is better than my english ... ;-) I decided to make my videos in german language because there are so many good KZfaq channels about commodore retro computing. So I wanted to do something different ... I am very proud of our C64 community! Best regards! Your Doktor64!
@MindFlareRetro 5 жыл бұрын
@@doktor6495 I doubt that. From your writing here I would say your English is quite good, indeed. Would you consider making one video in English? Even a short video to see how it would be received my your viewers? I know I would enjoy it for sure. Just a thought.
@doktor6495 5 жыл бұрын
@@@MindFlareRetro Thanks for the flowers! :-) Yes, I already thought about it ... hmmm maybe I'll try ... Greetings! Doktor64!
@MindFlareRetro 5 жыл бұрын
@@doktor6495 That would be great. I would enjoy that.
@Plan-C 4 жыл бұрын
Outstanding as usual. Very nice fix. Some boards can be a real pig in terms of traces. Not sure why. Maybe they used different factories or something. I normally start shotgunning chips when I get that frustrated lol. U27 ican be a pig as well. Keep it up.
@MindFlareRetro 4 жыл бұрын
Thank you very much, good sir.
@ProjectGeek1 5 жыл бұрын
Also, I was watching this video and talking to Mitchell at the same time. I recently got some chips from him and had a nicely typed letter too!
@MindFlareRetro 5 жыл бұрын
Haha. Cool! Mitchell is the best.
@aphexteknol 5 жыл бұрын
MindFlareRetro Hey! I’m famous! LOL :)
@electronash 5 жыл бұрын
@@aphexteknol Allo.
@aphexteknol 5 жыл бұрын
ElectronAsh Greetings to the FPGA master! :)
@MindFlareRetro 5 жыл бұрын
Hey there, @ElectronAsh. Thanks for dropping by. How have you been?
@billwilliams6338 4 жыл бұрын
MINDFLARERETRO, 1.) In arcade games they use Address decoder chips to do the ROM chip select signals they dont' use PLA chips. I'm surprised why does the C64 game console used a PLA chip to do the chip select signals instead of using an address decoder chip, any reasons you think? 2.) In pinball games they used PIA chips to do the I/O processes for the switches matrix circuit and lamp matrix circuit and didn't use CIA chip. I'm not sure why they didn't use CIA chips in pinball games instead of using PIA chips. Arcade games use neither PIA chips or CIA chips to do the I/O processes like the joystick and buttons its done using an multiplexer chip as I believe? Not sure why arcade games didn't use PIA chips or CIA chips for the joystick and buttons. Any advantages of using CIA chips instead of using PIA chips?
@GadgetUK164 5 жыл бұрын
Great job both =D
@MindFlareRetro 5 жыл бұрын
Thank you, sir.
@educatedmanholecoverbyrich8890 3 жыл бұрын
You know, a CROWBAR has only four components (excluding a fuse or resettable fuse), and can be soldered in situ.
@ChronicKPOP 3 жыл бұрын
someone's been inside..... and... they've done stuff...
@SpaceParanoidX 3 жыл бұрын
Oh noes! Bend pin on the 6510 @6:53! ;)
@MindFlareRetro 3 жыл бұрын
Good eye! I did catch that a few minutes later. Thanks for the heads up, though -- I appreciate the feedback.👍
@svenpetersen1965 5 жыл бұрын
It really like those repair videos. They are more thrilling than Kojak or The Streets of San Francisco. Actually both genres work the same... the audience is watching and thinks about, who was the culprit :-))) The Aphidwhatever channel is a cool tipp, I didn‘t know it and I have watched some of his videos already.
@MindFlareRetro 5 жыл бұрын
Hey Sven. Thanks for watching and for commenting. I see we grew up in the same era of 70s TV crime adventures. I'll try to make the next video more like Starsky and Hutch. 😉 I have been admiring your retro diagnostic projects. do you have a website or blog where you display all your creations?
@svenpetersen1965 5 жыл бұрын
MindFlareRetro I don‘t have a website, yet. Actually I have one (guitarsite.de), but I have switched it off, because there were some new regulations about data privacy and my website requires a data privacy statement. I should fix that some day. Setting up a c64.guitarsite.de website should be no problem. There is enough webspace available. I was thinking of doing a „scope on C64“ thing, explaining the circuit of the C64 in detail and show scope pictures of the most important signals. I guess, that might be helpful for somebody and I could also introduce my little builds. I also want to dig deeper into the cartridge business :-)
@MindFlareRetro 5 жыл бұрын
@@svenpetersen1965 A _Scope_ _on_ _C64_ series would be great! I would find this very useful. I tend to rely on the Dead Test and Diag Cartridges too often and I don't probe properly in a logical manner. I would love to learn from you.
@svenpetersen1965 5 жыл бұрын
MindFlareRetro I have still a bunch of little hardware goodies for the C64 on my desk(s) that need to be evaluated and documented, so I can release them on github. After that I should take care of my old website and then, I will setup the C64 website. That will be fun :-)
@MindFlareRetro 5 жыл бұрын
@@svenpetersen1965 May I have a link to your GitHub?
@ruthlessadmin Жыл бұрын
Wow...that was quite a journey! I have a box from Ebay with a C64 and C64c. Hopefully I don't have to play this game with either of them. Edit: for those plastic standoffs, wouldn't it be easier to put them in the board first? Seems like you'd have to kinda guess by sticking them to the chassis first. Obviously what you did worked out, but just not how I would have approached it.
@MindFlareRetro Жыл бұрын
Thanks for watching. Yeah, admittedly, my _applying_ _the_ _standoffs_ approach could have been a bit more thought-out. Hopefully, your C64s do not require multi-country journeys. ;)
@anotheruser9876 5 жыл бұрын
That was one sick-sty four. (Perifractic mode detected)
@johnhall3827 Жыл бұрын
it is so easy to miss or get frustrated when repairing a bad job evan worse if you are working for a customer . you can not work a way for a few days to recharge .
@danniemortensen4217 3 ай бұрын
Not sure Those standsoff Will last 🤔. They are soft in the middel. At The end where The joystick was inserted, The board moved slightly. But a Dahm good repairjob. I guess i would have attempted to throw The board as a frisbee After a week 😂
@MindFlareRetro 3 ай бұрын
Yeah, it was a bit of a rush to finish this repair, so I went with the quick and dirty standoffs. Thanks for watching and for commenting. :)
@BadSector 5 жыл бұрын
the last three C64's with black screen I repaired where RAM failures. I have found by replacing one only leaves another to fail later, I replace them all. they are getting harder to find so I buy more then I need. I blame the power supply for most of the failures.
@gregorymalchuk272 3 жыл бұрын
I don't understand the blaming the power supply. Aren't there linear regulators on the board?
@sweetlilmre 5 жыл бұрын
Excellent video, thank you!
@MindFlareRetro 5 жыл бұрын
Thank you very much. I'm glad you liked it. Thanks for watching and for commenting.
@sweetlilmre 5 жыл бұрын
@@MindFlareRetro I've got a dodgy c64 board that I gave up on. This has inspired me to give it another go 🙂
@MindFlareRetro 5 жыл бұрын
@@sweetlilmre Yes, do give it another go and feel free to reach out if you have any questions. I certainly do not have all the answers but I would be happy to help if I can. Do you happen to be on Twitter?
@sweetlilmre 5 жыл бұрын
@@MindFlareRetro I follow you 🙂
@MindFlareRetro 5 жыл бұрын
@@sweetlilmre Oh, man. Sorry about not noticing that. Let's keep in touch and see if we can get your C64 working again. 👍
@MrReyRomantico 4 жыл бұрын
That Deoxit looks like Vodka... I hear Vodka can do anything. lol
@MindFlareRetro 4 жыл бұрын
Vodka assists with retro repairs on many levels. 🥂
@epremeaux 5 жыл бұрын
6:54 pin 13(?) on 6510 hanging out when placed back in the socket
@MindFlareRetro 5 жыл бұрын
Haha. You are the second person to spot that mistake - thanks for speaking up. 👍 I actually caught that the leg missed the socket after recording that video clip and corrected it. I guess I should have been more forthcoming and mentioned it in the video. It's amazing how many viewers spot the little things (well, difficult to notice in such a short video clip) -- it tells me that you were paying close attention, which is quite a compliment. Thanks again.
@klausstock8020 4 жыл бұрын
I guess that since posting this video, about 8.880 "fresh pairs of eyes" already saw this.
@gregorymalchuk272 3 жыл бұрын
I'm not exactly sure how this works, but I think there is a problem with concluding the first multiplexer is bad simply because one pin is stuck high. Can't you only conclude that if the other input pins were otherwise correct? If an input pin lost its pulsed signal because of a different chip, the output would be stuck, right?
@MindFlareRetro 3 жыл бұрын
Yup, you are absolutely correct. However, a knee-jerk C64 repair move is to remove any MOS 7708 ICs and replace them with new newer ICs from TI or other reputable manufacturer especially if you even remotely suspect a RAM or addressing fault. The MOS 7708s are renowned for their high failure rate. Having said that your take on it is the more appropriate best practice.👍
@Mr_Meowingtons 2 жыл бұрын
all them MOSTEK RAM chips and the MOS 74LS257 are sus.. and I'm just at 4:30
@MindFlareRetro 2 жыл бұрын
Yup. Agreed!
@Brianreese83 4 жыл бұрын
That chip cooked its pads right off
@MindFlareRetro 4 жыл бұрын
Yeah. I'm pretty sure many of those ICs ran at very high heat until the pads were baked off of the board.
@proxy1035 4 жыл бұрын
I would introduce his kid to QB64 instead of C64 BASIC... QB64 runs on Modern Win10 and has easier to understand graphic/sound commands and is overall just better with a build in Wiki and real time syntax checking... also after or rather before replacing so many ICs you might as well just replace the whole PCB and throw a single FPGA on it and tell him to never open it :p
@RetroWK 5 жыл бұрын
Jurassic Park Amber ... ;-)
@MindFlareRetro 5 жыл бұрын
At least someone appreciates my silly humour. ;)
@FullMetalFab 5 жыл бұрын
Wait what.... your in Oakville ?!?!?! Dude I may have to drop off a C64 if I don't figure out my Ram problem lol
@MindFlareRetro 5 жыл бұрын
LOL. Yes, I am. You, as well?
@FullMetalFab 5 жыл бұрын
@@MindFlareRetro I live just north of Campbellford if you know where that is. I go to Mississauga regularly for work.
@davidrobinson9526 3 жыл бұрын
just Think, If MOS Technology and not MUSTEK was more prevalent, computing would be more advanced today, so QuBits were about some years ago and COVID-19 would be an illusion, possibly
@jdryyz 5 жыл бұрын
I like that C64 saver the best. Is that the version bwack makes??
@MindFlareRetro 5 жыл бұрын
Yes, @bwack used to make that one, but he no longer does, unfortunately, as it was too time-consuming to produce. However, he has designed an easier-to-make C64 Saver V2 that I provide a sneak peek of in my mailbag video, bit.ly/MFR-YT-15 ... and a video is coming soon. 😊
@billwilliams6338 4 жыл бұрын
MINDFLARERETRO, when you use the "dead test cartridge" which IC chips is this testing or what are you using the dead test cartridge to test? you also use a "diagnostic Test cartridge" also to test what IC chips? I'm confused what is the differences of the dead test cartridge and the diagnostic test cartridge and what are you using them for when troubleshooting?
@MindFlareRetro 4 жыл бұрын
Hi Bill. Thanks for your questions. Well, in short, the two Commodore diagnostic cartridges off the following features: 1. *Dead* *Test* *Cartridge* *(REV 871220)* - Tests various system RAM areas at startup. It was typically used to assist in testing C64s that would only power up to a black screen. The Dead Test requires only the CPU, PLA and VIC-II chips (and SID if you want it to test sound) to be installed as it is loaded into memory before the Kernal in order to test memory. The CIA chips, BASIC, Kernal and Character chips do not need to be installed, as these chips are not tested - the Dead Test does not require a loopback harness to test these other ICs. According to the manual, "The Dead Test is almost completely dedicated to System RAM testing and does no type of System ROM or Port Testing." Power Up RAM Test Zero Page RAM Test Stack Page RAM Test Screen RAM Test Color RAM Test RAM Test Page Sound Test Lower Screen Display 2. *Diagnostic* *Cartridge* *(REV 586220)* - Tests most of the same RAM areas as the Dead Test (but does not perform a Power Up RAM test) as well as 6510 MPU/CPU, PLA, SID, VIC-II, system RAM, ROMs (BASIC, Kernal, Character) and internal I/0 circuits (including the CIA chips). In order to take full advantage of the Diagnostic Cartridge, a Loopback Cable Harness is required in order to test the I/O functionality of all the ports and the keyboard. Adrian Black reviewed the new Diag Test Harness created by Sven Petersen (@svenpetersen191 on Twitter) on his YT channel recently, kzfaq.info/get/bejne/qeCDraRnuZqvlKs.html. Manuals for both the Dead Test and Diagnostic Cartridges can be found here, blog.worldofjani.com/?p=164. I hope this helps. Thanks for watching and thanks for your comment.
@billwilliams6338 4 жыл бұрын
@@MindFlareRetro thanks for the help 1.) Any reasons why C64 uses PLA chips and CIA chips? because arcade games in the 70's and 80's didn't use PLA or CIA chips. So I'm not understanding why they used PLA & CIA chips instead of using something else or not using them at all. 2.) Any reasons why the C64 and other arcade games use different types of RAM chips "access time"?
@OMightyBuggy 5 жыл бұрын
Do you have to put back on the RF shield?
@MindFlareRetro 5 жыл бұрын
A very good question, and in my opinion (and others, as well), *no* you do not have to replace the top RF shield. It does very little at all as a heat sink. You are much better off to apply small self-adhesive heatsinks to primary ICs -- these will do a much better job of dissipating heat. If you are interest, check out two video I did a while back, doing some temperature testing with and without the RF shield in place: bit.ly/MFR-YT-03, bit.ly/MFR-YT-04
@kke 4 жыл бұрын
The plane sounds like the one in blue max
@MindFlareRetro 4 жыл бұрын
DIng! Ding! Ding! You are the first one to recognize that. Your comment gets a ♥! Good Ear!!!
@zaidhussain5206 5 жыл бұрын
Thank you for sharing this video, really interesting , can you share a ROM copy of that diagnostic cartridge ? that would be very useful
@MindFlareRetro 5 жыл бұрын
Hi. Sure, the Commodore Dead Test cartridge BIN file can be downloaded from several reputable Commodore enthusiast websites, including _World_ _of_ _Jani_ -- go to blog.worldofjani.com/?p=164 and scroll down to C-64 Dead Test Kit (CBM 314139-03).
@ericschepers9317 4 жыл бұрын
Hey I have 3 c64s and i was wondering if it is posible for u to look at them and test them if they work?
@ericschepers9317 4 жыл бұрын
I'm in Woodstock ontario
@MindFlareRetro 4 жыл бұрын
@@ericschepers9317 Hi Eric. Thanks for subscribing and thanks for reaching out. Sounds interesting. Could I trouble you to email me at the address in the About tab of my channel so we can continue the conversation there, kzfaq.infoabout?
@kke 4 жыл бұрын
Btw the link in the video says "patron" instead of "patreon".
@MindFlareRetro 4 жыл бұрын
Argh! I know. I was kicking myself after I realized that typo. It has been corrected in the videos after this one. Thanks for saying something -- much appreciated.
@daskarman 4 жыл бұрын
so many issues , i suspect the power supply overcharging
@MindFlareRetro 4 жыл бұрын
Yes. I agree with you. And then left turned on for hours to bake the board. 🔥🥵
@mindluge 4 жыл бұрын
i'm sure you did this for the principle of saving it, but how much did you charge your customer? wouldn't it have been much cheaper to buy another C64 than even your cost to repair this one?
@MindFlareRetro 4 жыл бұрын
Well, you raise a fair question. This whole retro computer repair thing is my hobby and I will do repairs for local people if asked. Yes, you are correct, I did this repair for the principle of saving it.-it is not a business-I do it for the pure enjoyment and satisfaction of bringing them back to life for people to enjoy. I referred to the owner of this C64 as my "customer" because we had agreed that he would pay for any replaced parts and in the course of the repair we agreed to split the cost of sending the motherboard to my friend Aphexteknol for a second opinion. In the end, he actually paid far less than it would have cost to purchase a working one on eBay. We were both quite pleased with how it all turned out in the end. Thanks very much for watching and for commenting.
@stevebez2767 5 жыл бұрын
Its a hard range o gonna for,4...!
@MindFlareRetro 5 жыл бұрын
svenpetersen1965 That's great news. I have followed you there (first to follow, I think). Also, I sent out a tweet proclaiming your arrival so hopefully that will get some some followers. I see that you are already following a selection of great people -- might I recommend some others: @bwack77, @GadgetUK164, @CommodoreLad (Cainers Commodore Capers on YT), @gamewhisperer, @A3rgan, @thilographie_de, @aphexteknol and there are many more, of course. It is a knowledgeable, helpful and friendly community on Twitter. See you there!
@WinrichNaujoks 4 жыл бұрын
So how much did you charge your customer, given that you've spent 1 million work hours on it?
@MindFlareRetro 4 жыл бұрын
Good question. Well, this is only a hobby for me and not a revenue stream by any stretch of the imagination, so we came to an agreement that he would pay for any parts used and the cost of any shipping. In the end he was happy to have a working C64 and I was happy to have been involved in its repair and happy I was able to document it in a video. Thanks for your question and thanks for watching.
@robertmiles9942 5 жыл бұрын
Dead beef!
@lis6502 2 жыл бұрын
Thanks for this Teslanol T6 idea - it actually is available in German stores, so no problem with delivery to mine part of Yurop :)
@MindFlareRetro 2 жыл бұрын
Good to hear. Unfortunately, I can't get Teslanol T6 here, but DeoxIT _is_ available and works great too.
@jason50146 4 жыл бұрын
Can be useful for troubleshooting: derbian.webs.com/c64diag/
@MindFlareRetro 4 жыл бұрын
Oh, yes, for sure. I am a frequent visitor there. Thanks for sharing the link.
@JoannaHammond 5 жыл бұрын
You basically rebuilt it.
@MindFlareRetro 5 жыл бұрын
Hey Joanna. Yes, we can rebuild it; we have the technology. ;) Thanks for watching.
@guse66 4 жыл бұрын
Good morning, my name is Enrique I like your videos, the purpose why I write I have 5 commodore 64, all have flaws, how can I connect the commodore 64 to a digital TV, I wait for your kind response
@MindFlareRetro 4 жыл бұрын
Buenos días, Enrique. Thanks for commenting. Well, Depending on the model of C64 the computer will have a 5-pin (early model C64) or 8-pin video out DIN connection. Composite output is available on both the 5 and 8-pin models. But, the 8-pin ones also offer chroma and luma (early S-Video signal) output. See the C64 video pinout diagrams here, bit.ly/C64VideoOut. In either case, you will need the appropriate cable to connect to a modern TV that has composite video input and/or S-Video input. If you are in Europe, composite or S-Video to SCART is also an option. There are many reasonably priced options from sellers on eBay, ebay.to/2BsSua7. Once you have the correct cable, another option is to use a video upscaler that will convert composite or S-Video input to an HDMI output. The Framemeister brand is an excellent option but is quite expensive. However, I have used inexpensive $20 USD upscalers that do a decent job especially if you only require it for repairs. Again, here is a list of upscalers on eBay, ebay.to/2VXNHGX. I hope this helps. have a great day!
@guse66 4 жыл бұрын
I found these cables, they could be used to connect commodore 64 to my digital tv
@guse66 4 жыл бұрын
I have this Commodore C64 y C128 Chroma, Luma & Audio Video Cable Para 1084s Monitor
@guse66 4 жыл бұрын
Do you have Whatsap, Email or messenger?
@MindFlareRetro 4 жыл бұрын
@@guse66 Sorry for the late reply. I am busy at work during weekdays. You can use the cable you mentioned with a chroma/luma to S-Video splitter cable (like this, ebay.to/2PoZe15 or this console5.com/store/s-video-s-vhs-to-rca-y-c-luma-chroma-adapter-cable-6-15-cm.html) to output S-Video. If it helps, you might wish to join the "Commodore 64/128" Facebook group, facebook.com/groups/commodoresixtyfour/. There are a lot of very knowledgeable people there that would likely be able to respond to you faster than I can. But feel free to contact me here on KZfaq again if you have any further questions.
@game_whisperer1606 5 жыл бұрын
First!
MindFlareRetro
Рет қаралды 7 М.
MindFlareRetro
Рет қаралды 34 М.
MindFlareRetro
Рет қаралды 12 М.
FISPECKT
Рет қаралды 208 М.
Rj Mobile 01
Рет қаралды 14 МЛН
Buy Smart┃Магазин ноутбуков
Рет қаралды 1,3 МЛН