What broke on this Commodore 1802 monitor?

Рет қаралды 78,191

2 жыл бұрын

#troubleshooting
The Commodore 1802 monitor is more rare compared to other Commodore monitors. This one was sent in by viewer James and it has a fault. In this video, I diagnose and repair this old beat up Commodore 1802 to make it work again.
-- Video Links
Seems there were at least 3 versions of the Commodore 1802 monitor:
www.zimmers.net/cbmpics/mecomp...
Support the channel on Patreon:
/ adriansdigitalbasement
Adrian's Digital Basement (Main Channel)
/ @adriansdigitalbasement
-- Tools
Deoxit D5:
amzn.to/2VvOKy1
store.caig.com/s.nl/it.A/id.16...
O-Ring Pick Set: (I use these to lift chips off boards)
amzn.to/3a9x54J
Elenco Electronics LP-560 Logic Probe:
amzn.to/2VrT5lW
Hakko FR301 Desoldering Iron:
amzn.to/2ye6xC0
Rigol DS1054Z Four Channel Oscilloscope:
www.rigolna.com/products/digi...
Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
amzn.to/3adRbuy
TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
amzn.to/2wG4tlP
www.aliexpress.com/item/33000...
TS100 Soldering Iron:
amzn.to/2K36dJ5
www.ebay.com/itm/TS100-65W-MI...
EEVBlog 121GW Multimeter:
www.eevblog.com/product/121gw/
DSLogic Basic Logic Analyzer:
amzn.to/2RDSDQw
www.ebay.com/itm/USB-Logic-DS...
Magnetic Screw Holder:
amzn.to/3b8LOhG
www.harborfreight.com/4-inch-...
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
www.ebay.com/itm/14-16-18-20-...
RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
www.retrotink.com/
Plato (Clone) Side Cutters: (order five)
www.ebay.com/itm/1-2-5-10PCS-...
Heat Sinks:
www.aliexpress.com/item/32537...
Little squeezy bottles: (available elsewhere too)
amzn.to/3b8LOOI
--- Links
My GitHub repository:
github.com/misterblack1?tab=r...
Commodore Computer Club / Vancouver, WA - Portland, OR - PDX Commodore Users Group
www.commodorecomputerclub.com/
--- Instructional videos
My video on damage-free chip removal:
• How to remove chips wi...
--- Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino

Пікірлер: 281

@WalterFrancis 2 жыл бұрын

"I'm going to give it a reacharound" I had gum in my mouth prior to that statement. I'm not sure where it went.

@ncot_tech 2 жыл бұрын

Glad I'm not the only one who spotted that.

@dsnein 2 жыл бұрын

Around.

@bruwin 2 жыл бұрын

Well at least he has some gosh-darned common courtesy!

@electronash 2 жыл бұрын

@@bruwin Full... Metal... Jacket.

@prozacgod 2 жыл бұрын

...may or may not have wanted to say something about that... but, I sort of felt guilty given that it's a 50 minute video and my only take away was him briefly saying something about a reach around... :P

@-CrippledNinja- 2 жыл бұрын

"Bring the alcohol!" And then Adrian turned into Ben Heck with toothbrush... 🤣

@hiroprotagonist1587 2 жыл бұрын

Let's not compare Adrian to that covidiot genital wart.

@organiccold 2 жыл бұрын

@@hiroprotagonist1587 hahahahaha well said

@jeffm2787 2 жыл бұрын

Watch the entire video at 2x speed like I did. Much much more entertaining.

@cheapasstech 2 жыл бұрын

All we are missing is the LGR reference

@dhgodzilla1 2 жыл бұрын

@@cheapasstech Needs Woodgrain

@frankjquinn120 Жыл бұрын

I grew up helping my Dad at this TV repair Store, Regent TV, in Sunnyvale, Ca, and your videos are so awesome. Brings back all the wonderful memories. Atari used to call me Dad to repair their monitors. They wanted him to teach their technicians, and he refused. Great memories!

@pipschannel1222 2 жыл бұрын

21:38 Adrian, talking to his small army of meters "Shush, who's beeping? Trying to film here, you bastards!" LOL! :-)

@Kazade84 2 жыл бұрын

I'd love to see this monitor cosmetically restored too! Retrobright, 3D printing etc. Thanks for another great video!

@BenState 11 ай бұрын

yeah that would be great!

@cybercat1531 2 жыл бұрын

Loved the enthusiasm in this one. The toothbrush bit got me. Careful about channelling Ben Heck there XD

@LXXero 2 жыл бұрын

hahaha, usually it's Ben channeling everyone else, lmfao. When Adrian starts busting out into song mid-video, then we'll know for sure.

@natethefighter 2 жыл бұрын

Is it just Ben Heck? Or is it a fate that befalls anyone who spends this much time working on vintage electronics? 🤔

@cybercat1531 2 жыл бұрын

@@natethefighter Must be all that leaded solder and flux fumes haha

@VinceValenti 2 жыл бұрын

Yeah, Adrian seemed especially energetic in this one! Too much Tang? :)

@thicclink 2 жыл бұрын

I have a funny story about my 1802 with a similar deflection issue. I bought it in 2018 and it worked great aside from a sticky power button. A few months later i turned it on and had a flat line. Dead vertical deflection. But if i let it warm up it would slowly grow to fill the screen. I spent some time diagnosing and didn't find anything. Decided to take the shotgun approach and recap the entire monitor... No change... Replaced both the ICs... No change... Even tried reflowing a bunch of solder joints... No change. Well, around this time i also had a major mold problem in my apartment (i was in a shady apartment complex). As it turns out, there was a loose drain pipe from the walkway upstairs, causing moisture to get into the walls which caused the entire apartment to stay very humid. Well i finally forced them to fix the issue with the drain pipe and got everything de-molded and some time later turned the monitor back on to try to do some more diagnostics... To my surprise the deflection problem was gone! It's been a couple years and it's never come back. I still have a hard time believing it but the only conclusion i can come to is that the very humid air was causing some sort of fault in the vertical deflection circuit. And that's why as i left the monitor to warm up it would eventually fill the screen. I couldn't believe how much time I wasted just to find out the monitor didn't have any issues but in the end it got a bunch of good maintenance, so I can't complain too much.

@brooknet 2 жыл бұрын

Ugh, I hate that. I had a Casio VL-1 that was totally wrecked by that sort of mould. That, and spiders - they just love circuit boards.

@75slaine 2 жыл бұрын

You can really tell in this video that working on CRTs sends Adrian to his happy place ☺️

@twocvbloke 2 жыл бұрын

Just a random musings from my head while watching the first few minutes, I sometimes wonder if the Commodore 1701 monitor was named as the "1701" as part of the association with Bill Shatner advertising the VIC-20 back in the day, loosely tying it into the Star Trek franchise (especially as they low-budget "beamed" him in to the ad!!), given the Enterprise registry, as everyone should know, is NCC-1701... :D

@jamesdye4603 2 жыл бұрын

That Would be pretty cool and not outside the realm of possibility. Lots of computer guys were Star Trek fans.

@Lioncave_Gaming 2 жыл бұрын

The best way to a good mood after a long day, watch your videos, bring back old stuff. I am 36 years old and that is my childhood. Stay healthy und motivated. Best regards from Germany.

@lucasrem 2 жыл бұрын

happy i did trash it all, who needs a trash museum, running what on it? converted all music we composed only, only kept the DX -7 keyboard and Korg synth!

@ZacabebOTG 2 жыл бұрын

35:21 I bought one. It weighs 2 lbs. When I first plugged it in to test it, I didn't know if it was on or off. It was on, as evidenced by the blower shooting back a foot and then starting twirling around. That's how powerful it is. 😄

@hasnopants 2 жыл бұрын

I think adrian is the most wholesome retro pc channel...I really enjoy watching these since my 12 year old son can watch them with me and learn about the stuff his dad grew up with! Thanks Adrian!

@steven-vn9ui 2 жыл бұрын

Shipping companies need to be more selective who they employ. Enjoyed very much the humour and goofy voices you used, good fun!

@stragulus 2 жыл бұрын

This monitor was very poorly packaged, I don't think that was the shipping company? It is a miracle that it arrived still intact like that. I hope Adrian adds some extra padding before sending it back!

@Cabalist3131 2 жыл бұрын

I’m loving watching you check each cap. I work alone a lot and it is incredibly validating to watch this extended troubleshooting. So many videos are highlight reels that make me feel like I’m spending way too much time on things. Thank you!!🙂

@Vermilicious 2 жыл бұрын

A very enjoyable episode. Seems you had a good time too, Adrian. Nice fix.

@adriansdigitalbasement2 2 жыл бұрын

Thanks! It was very fun and enjoyable.

@Null_Experis 2 жыл бұрын

When shipping monitors, you REALLY need to use those expanding packing foam bags to basically make a form-fitting insulator that has 2-3 inches of foam in every corner of the box. Also, use a thick-walled rigid box. I've shipped 6 monitors this way and none of them were damaged. The only way to do it better is to use the original box with the original styrofoam.

@fellipec 2 жыл бұрын

Hey, hi Fran! @9:00

@Arkansmith 2 жыл бұрын

Love that "WGET is Not a Crime" sticker on your cabinet!

@daveuser4955 2 жыл бұрын

Thanks for the 8 Bit dance party Adrian. I always hated old monitors and thought LCDs were the best thing ever when they were invented but you are giving me a new appreciation of CRTs.

@deplinenoise Жыл бұрын

Your videos are so relaxing. It’s like I’m hanging out with a friendly tech in their workshop and I don’t feel like I’m getting in their way. Learning a lot. ❤

@SiaVids 2 жыл бұрын

It's always great to find someone who does not believe in the mindless changing of all electrolytics on a PCB which happens all too often, it is the sign of a true engineer. 👍

@dennisp.2147 2 жыл бұрын

Jordan's channel is criminally underwatched.

@jafirelkurd 2 жыл бұрын

I love this kind of video. I’ve got an old Samsung EGA monitor that has a similar collapse and I think this will give me the confidence to give repairing it a try.

@tiki8857 2 жыл бұрын

You're like the happy enthusiast dad every kids want to have ^^ Thank you for this very interesting video

@jgrimsley2000 2 жыл бұрын

@ 39:09 Adrian: "just gonna give it a reach-around...." Archer:"Phrasing!"

@Codeaholic1 2 жыл бұрын

29:55 Haha i was just watching a 1950s video on how to test transistors. The first half of the video is all about visual inspection.

@johnbos4637 2 жыл бұрын

Be careful with this monitor and do some extra preventative maintenance before putting it away. Inside the yoke there is some of that same brown glue and it will eventually corrode through the yoke winding and cause a short which will blow the yoke and then you'll have an unusable monitor. Remove the yoke and clean off all the brown glue and hope it hasn't damaged the enamel coated wires yet. Years ago I was given an 1801 that had exactly that fault and I had to replace the yoke as it was burned black on the vertical winding. You've been warned, do nothing and the monitor will die all by itself thanks to Commodore using corrosive glue. The fault is documented on Ray Carlsen's website. Go do some reading and fix it now!

@neillthornton1149 2 жыл бұрын

I love the workup about the air blower, talking about how things are going to end up all over the place, and then we get the most underwhelming result... but I hear you about caps, I just had to recap my entire Sony PSU that was OEM for my Sun Sparc IPX lunchbox machine. What a mess that thing made, juice everywhere!

@twocvbloke 2 жыл бұрын

Nice job there, I have to admit I have done the whole troubleshooting process and not seen the obvious, as sometimes you just expect stuff to require probing and thus go straight to that, rather than just do a bit of observation first to spot anything that is out of the ordinary... :)

@itstheweirdguy 2 жыл бұрын

I think it's good to show what he would have done if a visual inspection didn't show anything. :)

@teejmiller 2 жыл бұрын

Adrian is clearly all hopped up on Gummi Bears in this one :)

@EU_Red_Fox 2 жыл бұрын

This two channel is getting to the point where idk if it’s the primary or secondary one uploading videos lol.

@LP6_yt 2 жыл бұрын

I loved my 1802. It ended up with my Dad when I passed my Commodore gear on to him when I started using my Amiga and PC way back in the day. It still works. I guess I have been lucky with monitors as my Philips CM 8833 MkII also still works.

@PaulinesPastimes 2 жыл бұрын

Excellent video. So true about the troubleshooting. It teaches you something every time. Glad I'm not the only one who talks to their meters 😊

@Box223 2 жыл бұрын

I only just realized that this is the second channel. I will go check out the main one after this.

@PeteWord 2 жыл бұрын

So great that you were able to fix this with a part from a donor board!

@jamesdye4603 2 жыл бұрын

Nice to see another CRT brought back to life.

@pklausspk 2 жыл бұрын

I have a similar issue with a b/w TV. I bought it at Ebay because I used that exact type on my VIC-20 in the early eighties. This video encourages me to look for the error honestly.

@Robertkopp84 2 жыл бұрын

I am so glad I was bored to watch another repair video. I just ordered the same esr/lcr tester and now you showed me how to use it.

@mightywiz 2 жыл бұрын

another tip! pretty much all parts location id numbers are the same from brand to brand as a standard. so if it's a vertical deflection issues it's gonna be a part in the 400's. if it horizontal deflection or no high voltage it's going to be a part in the 500's. unless your B+ in the power supply is gone (b+ voltage is your main voltage coming from the power supply.) if you pay attention to the numbers you will see what i'm talking about and it's helps you find the section of the board you should be working in.

@graealex 2 жыл бұрын

RF adapter is called a balun (balancing unit) and while it does change the impedance, the main difference is the balanced/unbalanced thing. They do work in both directions, also.

@jeffm2787 2 жыл бұрын

I thought it was BALanced / UNbalanced i.e converting between a balanced input to an unbalanced input or vs. versa. Example 75 ohm UNbalanced to 300 ohm BALanced.

@graealex 2 жыл бұрын

@@jeffm2787 "Balanced/unbalanced" is another name. The change in impedance is not the central concept here, and you can for example buy baluns that have 50 ohms impedance on both sides.

@jeffm2787 2 жыл бұрын

@@graealex Yes I understand, been a HAM for years and have a strong background in electronics. It's my understanding that the BALUN word came from Balanced to Unbalanced.

@alexandermaasland3494 2 жыл бұрын

Well done again Adrian :) I’ve enjoyed this repair a lot !

@DrTofu83 2 жыл бұрын

The original 1701/1702 were JVC TV/Monitors rebranded. Some of them, the earliest, have still a cubhole where the RF Modulator sat, and all the other have some pegs hidden under the bezel where the JVC logo was affixed. Nice video, I love seeing restorations and since I may have to move in a bigger house, I always seek suggestions on how to pack my CRTs properly ^_^

@TheBasementChannel 2 жыл бұрын

The most impressive thing about this video is you know every adapter/cable by name. I would have called most of those things in the purple case “another cable thingy”

@volvo245glt 2 жыл бұрын

Great video and nice work! 😀👍 What I think happened here is that the glue turned conductive and probably contributed to that capacitors demise. You can also see the glue starting to go bad right next to that hot resistors other leg.

@andygozzo72 2 жыл бұрын

fairly common problem, the glue absorbs moisture from the air, i've had this and rubber wedges between the scan coils and crt also absorbing, even to state of being 'wet' and this wet seems acidic and corrodes the wire in the scan coils, in some cases destroying them!

@jondough76 2 жыл бұрын

43:52 I thought you had missed some spots while cleaning the screen. Turns out it is just time to clean mine.

@ChristinaGXL 2 жыл бұрын

Gosh the innuendo, I love it

@kirbyyasha 2 жыл бұрын

What a beautiful monitor. I am biased as that was the same monitor I had a youngster. I miss it as it is just a set I loved.

@MarianoLu 2 жыл бұрын

Awesome video Adrian! love this just get it done troubleshooting and repairs

@H0lyman01 2 жыл бұрын

Oh yes, Give those pots a "Reach Around".

@bobingabout 2 жыл бұрын

I remember I built a power supply. the capacitor across the output was a high capacitance value (4700uF I think), but only 16 volts. The input to the voltage regulator was only 15 volts, under load, but when the load was removed, it'd float as high as 18. I only ever used it while it was under load, but I leant it to somebody. He said that when he finished using it, and turned his machine off, the power supply made a bang sound. Yup, the capacitor inside had exploded, pretty much filled the entire box with gooey fur. Replacing the capaitor wasn't an issue, I actually used a pair of lower capacity (2200uF?) 25V capacitors... but it took me about half an hour to clean out the remnants of the old capacitor.

@raft5205 2 жыл бұрын

Cool video, thanks Adrian 😊

@Shawnsteroz 2 жыл бұрын

At least the Postie didn't use the box as a football, unlike Mr Lurch's All-in-one package from his Saturday video. I actually bought a 1084 monitor from East Coast Australia to West coast, and I never appreciated the risks of it being damaged. The seller did a great job of protecting it and even put FRAGILE stickers all over it, and luckily it arrived intact, and I cherish it to this day. I recapped the electrolytics, now I feel silly as the old ones were likely just fine, and it never worked any better. It's a great combo with my Atari 800XL with RGB graphics adaptor.

@fivezeroida34 2 жыл бұрын

Try some Deoxit F5 for Fader Control. It is specially formulated for pots and has special lubrication for the pots. Works great for this type of thing.

@MrRadar 2 жыл бұрын

Deoxit D5 (the stuff in the red can) also has some solvents in it that can damage potentiometers. Xraytonyb recently made a video about this topic.

@atcmiker 2 жыл бұрын

It would have been a short KZfaq clip if you have just used your eyes Adrian. Glad you took us through your problem solving routine.

@sragga 2 жыл бұрын

i have an 1802 made in'86. it looks white, and is larger than this one. been in wrapped in a plastic bag, and not turned on since ~2000. was part of a c128, or facelifted c64 system my father had collecting dust in a spare bedroom since the mid 90's. i boxed and bagged the whole thing up,put it in storage, but kept the monitor at home. it the only thing wrong with it at the time was the floppy open/close plastic switch was broken.it had the pc,floppy, printer, and joystick. i had it stored in the loft of a friends barn with some other childhood items. they were forgotten about, and the barn was torn down, and all my stuff was lost, but the monitor. if you want it, you can have it.

@genosch 2 жыл бұрын

My 1702 monitor from 1983 was made in Japan by JVC.

@EdwinNoorlander 2 жыл бұрын

Good job Adrian.

@Zadkiel343 2 жыл бұрын

Great video - as it turns out the CRT was in such good condition, maybe it could be worth a case restoration too! Curious how long you spent doing the board component checks, interested in how much time would have been saved by doing the visual inspection.

@TheoValenti-zr3cp 5 ай бұрын

21:39 That was funny, ”Oh, Shut up! Who’s Beeping?!” I didn’t think that Multimeters actually beep! That’s cool!

@IEnjoyCreatingVideos 2 жыл бұрын

Good fix Adrian! Thanks for sharing it with us!💖👌👍😎JP

@Charleshawn66 2 жыл бұрын

Great Video!!! I'm glad I checked your 2nd channel or I would of missed this great piece of retro history being fixed. I watch every video on your main channel and love your content so much!!! On a side note I have just bought three 1084S monitors from eBay to try and make two. One for my A1200 and the other for my C128D that I just got last week. One sold as works but the case is BAD (It showed up working like the eBay photos showed). The 2nd one is sold as is for parts only in original box with all books. Seller said it worked when he put it away 5 years ago and the case is perfect!! with no yellowing). The 3rd one is also in original box and it's case is a little bit rough and the seller shows it working if you hold in the switch after a few pushes, but turns off as soon as you let go of the switch. I have bought a four pack of their power switches (ME5A TV3 2.5/100 250V XB power switch potentiometer switch 4 Pin-4PCS/LOT) from AliExpress for $36 and free shipping. I'm hoping at least 2 or 3 work because in the reviews some have wrote that one of the four didn't work.

@minty_Joe 2 жыл бұрын

Awesome job, Adrian! Shango066 would be proud. And I was so hoping for an electroBOOM moment, too! Hahaha!

@mccrh7737 2 жыл бұрын

Awesome video brings back memories ;) Had one just like it, but metal, back in the day, played a lot of SNES on it :) Also acted as my secondary monitor for my SE/30, that's a keeper for sure :)

@ouch1011 Жыл бұрын

I worked as an automotive tech for nearly 2 decades and yes, once you verify the concern\problem with whatever you are diagnosing, a good visual inspection can save so much time. You still should always test and verify a failure before condemning the part, but just looking first can really help narrow down where to look.

@sumatoborukiSaru 2 жыл бұрын

Apparently green (F5) , not red (D5) Deoxit should be used on carbon pots. Xraytonyb did a video on this.

@sa3270 2 жыл бұрын

Just a bit of trivia, when I was in college in the early 90s, in the library they had a video station where they had a JVC monitor that had a case that looked just like a Commodore 1701 or 1702 monitor, except it was black.

@milk-it 2 жыл бұрын

As is often the case, it's capacitors. Not always, but seems to be a common issue among old machines. Nice job!

@JoeCdaYT 2 жыл бұрын

As a person that has done repair work on equipment that has power resistors around capacitors and all I have move power resistors to a metal heatsink or the frame to keep the caps from cooking. When replacing capacitors I don't deviate to far from the capacitance value and will usually go higher on the voltage due to the factors of how some systems were designed around specs. If a system is rated to have 25v on a line you will see tight values installed of either the 25v which is not the best idea or 35v which is better but still not very good. I usually will go at least twice the voltage of what was in there. In this case I would have gone with a 50v cap just to have a good safety margin. Better to have higher voltage than be too close that a surge pops it or another component goes wacky and sends higher voltages where it was not expected taking out more down the line. Thanks for the video. Sorry for the text wall.

@vhm14u2c 2 жыл бұрын

Nice ts work, thanks for sharing!

@Proteus21a 2 жыл бұрын

I used to have a TV with the same issue, I had to replace the capacitor two or three times. lol :) Nice video :)

@definitelycasualpcs8789 2 жыл бұрын

I actually just picked an 1802 up recently. Audio sporadic. And the video selection switch is spotty which the sound does get better when I mess with it

@VintageTechFan 2 жыл бұрын

At our computer collection we had the same problem, with a Philips monochrome monitor. This cap has a high AC current load and therefore wears down more than others.

@KrissBartlett 2 жыл бұрын

Very nice thanks for that nice fix

@juhaszattee 2 жыл бұрын

You heckin' mad man!! and yes, I enjoyed the monitor :D

@mikeread5132 2 жыл бұрын

Nice one, Adrian. Yep - shotgunning is a viable (and on vintage electronics, some would perhaps say the _best_ ) servicing technique. But I agree with you and your diagnostic approach. For vertical centering on sets without a control (and fergitaboud changing resistors, eh?) sometimes using the purity rings to centre the image woiks. Maybe.

@dsnein 2 жыл бұрын

Oh perfect. I have one of these that was just about to hit the bench. And the KZfaq results were lacking last week.

@tobitechboy1461 2 жыл бұрын

I love restorations! You should do more 😃

@lucasrem 2 жыл бұрын

need content for the KZfaq jobs here, lol! who needs a computer museum at home ????

@GalileoAV 2 жыл бұрын

12:24 that is the coolest glitch I've ever seen in a monitor or TV

@michaelblair5566 2 жыл бұрын

I never had a 1702 or 1802 monitor. I eventually had a Philips color monitor that would do 80 column mono for the 128. Forgot the model, but rigging it for Mono output was a mod I did back in 1987.

@eltair8800 2 жыл бұрын

Never skip the visual inspection!

@801murad1 2 жыл бұрын

Dear Adrian's you can use 100 w light bulb in between for a safe switching on an old TV or Monitor that you're not sure whether it work or not or there might be a risk of blowing up, it's very easy if the light bulb does comes on that means there is a problem and you should not plug it in directly until figuring out the causes, stay safe.

@tiporari 2 жыл бұрын

Recapping these monitors is popular for people who don't have the skill to troubleshoot these effectively. It's cheap, doable for someone with basic tools, and often effective. I know Shango and others criticize people for doing it, but do what you can with what you have. Not everyone has a fast oscilloscope, libraries of SAMS fotofacts, and specialized test equipment necessary to repair things "properly."

@andygozzo72 2 жыл бұрын

'blanket' recapping is a waste, as in the video, only one faulty, and they're not always to blame anyway, you dont need oscilloscopes or expensive equipment to test them, you can get fairly cheap cap/component testers via ebay, banggood, or similar, caps to check first, are ones near anything generating heat, ones in cool areas much less likely to have gone bad, heat and ripple current are big killers of caps, and hours of use, not purely 'age'

@Renville80 2 жыл бұрын

@@andygozzo72 it’s a different story when you get into the really old televisions and radios, as most of those have the old paper capacitors which are guaranteed to be leaky, so in those cases, you practically MUST do a full recap before you can hope for it to work.

@ultrametric9317 2 жыл бұрын

Good job! JBWeld those standoffs and retro that yellow dude! Then 3D print a new door! How you can do this great work without beer amazes me!

@adriansdigitalbasement2 2 жыл бұрын

Ha!! I used JB Weld and glues it all back together. The monitor has now been passed on to someone locally who needed a composite monitor.

@CJ-rf9jm 2 жыл бұрын

Had a couple of 1802's for a few years. Never had as much luck with those as with the 1701 / 1702's I've had. 1 of them ended up with the vertical deflection problem this 1 has. The other had a number of cold solder joints on the main pcb which a friend at tpug did help with a few years ago. Too bad it ultimately failed again.

@Natures_Intentions 2 жыл бұрын

I hate bad electrolytic capacitors!!!! They also smell so bad. Great video and great repair

@willieprins1361 2 жыл бұрын

When I saw theat vertical collapse my TV repair days came roaring back and my first thought was capacitor or faulty pot.

@JVHShack 2 жыл бұрын

After watching this, I'm starting to wonder about connecting an 1802 monitor to a CGA source somehow without using composite...

@mzeroxx69 2 жыл бұрын

I miss my Commodore stuff!!!

@MikesArcadeMonitorRepair 2 жыл бұрын

Nice job. I was 99.9% sure it was a cap issue as soon as you powered it on. Was surprised you didn't change them all. Yes, the caps check good, but they are 35 years old and it's a good preventive maintenance for the future. Either way, thanks for the great content.

@andygozzo72 2 жыл бұрын

if the others test good, no need to change, doesnt guarantee against future failure at all, any other, maybe unobtainable part could fail, and those original caps can potentially last many more years, i have lots of old equipment and have rarely had to change any capacitors, i find relatively new(late 90s to 2010s) caps and equipment worse!

@MikesArcadeMonitorRepair 2 жыл бұрын

I agree. I am against replacing working parts but caps are a bit different in my experience. A lot of them can test good but still be bad. I usually recap anything I work on because I have a reputable and trusted source for good caps. Everyone’s mileage varies.

@andygozzo72 2 жыл бұрын

@@MikesArcadeMonitorRepair if they test good, how can they be bad??!! i usually leave alone unless obvious signs of heat problems/or near heat source, or known bad brands, or if know problem for that particular equipment (had that a good few times in the 90s), caps in long unused equipment may seem to test bad, at first, but once powered up, be ok, due to deforming with disuse,

@MikesArcadeMonitorRepair 2 жыл бұрын

I am referring to them testing good for now, but being 35 years old, start to fail relatively soon. I basically don't trust them is what I'm saying, especially on high-usage items. Components like resistors, poly caps, inductors, flyback, etc I will of course leave alone. I have been repairing monitors and arcade parts for 15 years and caps are just the bane of my existence. So I'm biased towards replacing them because they often go bad prematurely due to the heat inside the machines while being ran for hours on end. Just my experience and preference.

@andygozzo72 2 жыл бұрын

@@MikesArcadeMonitorRepair so you'd replace now, and again after another 35 years,?? then again.?! i doubt many modern ones would last as long as the originals....

@Nukle0n 2 жыл бұрын

For a long-term fix you could maybe mount that cap with some long leads and fold it away from those gnarly resistors. With some heatshrink tubing on the legs of course.

@simontay4851 2 жыл бұрын

And solder wires to the big power resistor and mount it on the heatsink.

@JamesPotts 2 жыл бұрын

I've got a Daewoo 1084 with a bizarre "anti-collapse" linearity issue. The center few lines are spread out over an inch or so. Need to dig into it.

@MizMite2002 2 жыл бұрын

i remember getting these for 5 dollars at goodwill in the 90s. geat monitor for a second vhs machine.

@FullMetalFab 2 жыл бұрын

Now I'll go home pull my 1802 apart and look for that blow cap so I can fix it. All I get on my 1802 is a dot in the middle of the screen with a faint line and a buzz.

@BigBud69 2 жыл бұрын

Next time use some tape to hold the cap to the board when soldering it. Still love the videos so keep them coming!

@Oldgamingfart 2 жыл бұрын

I usually find the 'box-within-another-box' approach the best when shipping CRT TV's/ monitors. A little like those Russian nesting dolls. Even better is the original packing materials, but that's often too much of an ask! Here in the UK, we have a great service called Shiply who are really good with the handling of CRT's, even the large screens (28" and above).

@CoreyDeWalt 2 жыл бұрын

I've got a Daewoo branded composite monitor. It has a better picture than a TV but it is purely composite. It is also extremely yellow.

@valentine_puppy 2 жыл бұрын

I am sitting here eating lunch not paying attention to the video but have it on because I like this stuff and of course Adrian's Asmr voice. I am eating and I hear stuff out of context and I just stop and go what did he say? LOL

@senilyDeluxe 2 жыл бұрын

The 1701 (at least mine and most of which I came across) has a relatively small dot pitch. It actually killed (sort of) my childhood TV. My first own TV was a cheap 1997 14 inch model (still cost around 500 Euros in today's money) and I watched the hell out of it (up to 4 hours a day...). Then I was given a Commodore 128 with a few games and that monitor and I was happy, but when I found out I could hook it up to my VCR and use it with the VCR as a tuner I could make this a TV and the picture was so much better than my old TV, I didn't use that one any more and after a few months I thought I'd give my old TV another go, it struggled to turn on and the picture was dim and blurry. I thought maybe it'll get better if I start using it daily again. That worked for a day or two (with the picture like it should be), the next day it was blurry and dim and then something went bang (rather unspectacularly) and it just died. But well, I had a 1701 monitor I could watch TV with and with a flick of the switch on the back I'd be off to playing video games. And it still works today and I still use it a lot (although not as a TV anymore as my daily driver is now a Philips 26 inch from 1983 with stereo sound and bass reflex speakers).

@paulbruneau7379 2 жыл бұрын

Packing is always a challenge. In this case there was no packing on the top. But really there was not enough on any side, monitors are so dense. Imagine the box getting dropped on its top from 6 feet because that’s the reality

@stragulus 2 жыл бұрын

Yeah, I don't think people realize how packages are being treated. This packaging certainly was not up for the job.

@andygozzo72 2 жыл бұрын

@@stragulus tvs and monitors need at least 5 inches of soft polyurethane foam all round, not polystyrene, though, as this is far too hard and rigid (i used to work for a packaging company)