Sony SLVN750 VCR No Power
19:40
Күн бұрын
PELSEE P1 Duo Dashcam Review
24:05
14 күн бұрын
Pioneer SX550 Sound Cuts Out
11:43
14 күн бұрын
NAD 705 Dead Display
17:55
14 күн бұрын
Magnetic remote Holder
2:31
14 күн бұрын
Пікірлер
@dmcintosh1967
@dmcintosh1967 21 сағат бұрын
I had one of these receivers and I i got with it's matching components. The amp would power on but no sound from the speakers and the tuner acted crazy when trying to tune in a station.
@FrankJCarver
@FrankJCarver 22 сағат бұрын
You can't believe the damage that circuit glue can do. It's like an acid.
@tacofortgens3471
@tacofortgens3471 23 сағат бұрын
Were these made by Funai?
@AstrosElectronicsLab
@AstrosElectronicsLab 23 сағат бұрын
Another piss-poor design from Sony...
@sunspot42
@sunspot42 23 сағат бұрын
I had the 550, this receiver’s mostly identical but less powerful little brother. In some ways I still consider it the best receiver I ever owned. Sounded great for a mass market unit, looked beautiful and the ergonomics were fantastic. Best remote I’ve ever used. I miss it all the time.
@mcontrerasb
@mcontrerasb 23 сағат бұрын
Could this scheme work for z906? my dog ​​bit the cable
@WolfmanDude
@WolfmanDude 23 сағат бұрын
Hey I have a unrelated question: Why do the tape guides on VHS machines go out of alignment so often? I am currently learning about the adjustment procedure and I dont get why they are out of alignment in the first place!
@jeffadams5510
@jeffadams5510 Күн бұрын
I'm a DOCTOR Jim, NOT an electronics technician!-LOL!!!!!
@andershammer9307
@andershammer9307 Күн бұрын
I have a couple nice looking Sony receivers with that pulse power supply and I never got them going. I could never figure out what the power transistors were.
@vk4uh96
@vk4uh96 Күн бұрын
Silver Mica disease??
@12voltvids
@12voltvids Күн бұрын
They are still working. Owner says it is working great on a 20 foot antenna hanging out his window. You can go crazy and change all the caps but at the end of the day you have to do what the customer wants. If he wanted to spend 300 then sure change all of them and all the wiring. In his case he said make it work and make it safe. Is it as sensitive as it could be? Probably not but he isn't listening to shortwave from around the world, he is listening to local radio. There is noting on shortwave bands other than the god channels and i would sooner slit my wrists.
@troyconnolly9053
@troyconnolly9053 Күн бұрын
Nice straight forward repair . I’m sure I would take longer . Always thought swing arm pick ups were quicker but this is really fast .
@mrpedrodrodriguezsr7628
@mrpedrodrodriguezsr7628 Күн бұрын
I see that there was space for fins in that aluminum plate were the transistors and diodes are mounted. Maybe they missed that!
@mark902
@mark902 Күн бұрын
I have an integrated amplifier from this lineup. A ta-ax6. I think it's a great sounding amplifier. Great phono pre, I use it to rip records to my pc. A very very uncommon unit.
@edcrouse9453
@edcrouse9453 Күн бұрын
Awesome video!!
@MusicBoxVinyl
@MusicBoxVinyl Күн бұрын
Are you doing this with special tool or just a screwdriver?
@12voltvids
@12voltvids Күн бұрын
Screwdriver
@timewas673
@timewas673 Күн бұрын
I like to soften old glue up with isopropyl.
@drsysop
@drsysop Күн бұрын
I had the Ramsey 5 watt FM exciter & also Panaxis FME-500 with 10 watt amp & they were good with a proper duel bay antenna. FCC here in the US not even bother anymore as they allow power usually up tp 1 watt pep on AM & FM. Soon if it goes through the FM band will go down to 82.1 MHz allowing more low power broadcasts as well as AM translator stations but no dates set yet.
@12voltvids
@12voltvids Күн бұрын
What good will that be if radios don't go that low? I know someone that did it for 20+ years and never got caught and he ran 24/7. I still wouldn't take the chance myself as I am licensed for ham radio so getting popped for piracy would say goodbye to my ham license. My low poser stuff is strictly for testing equipment.
@randyverblauw9500
@randyverblauw9500 Күн бұрын
Is the motor the same as in a kenwood kx4520 deck? And what type of micro screwdriver did you use? + or - screwdriver?
@12voltvids
@12voltvids Күн бұрын
Don't know.
@jerrypeal653
@jerrypeal653 Күн бұрын
I feel much better about my bench now that someone else has one that looks like mine .
@12voltvids
@12voltvids Күн бұрын
Mine looks like 95% of real repair benches. The only ones I saw that were clean were shops that were not busy hence plenty of time to clean up every day. The last year I was at the shop I was at for 20 years started to look pretty clean in the last year I was there because most days I was done by 3PM but couldn't leave till 6PM even though I wasn't being paid by the hour. The asshole owner made me sweep all the floors as soon as the work was done for the day. Why couldn't I just leave, good question, tried that one day. Told him since I was on comission I was leaving as soon as I was done and he said fine then you won't get paid for the repairs that get picked up when I was not there as it had become my job to write up the order and cash it out.
@jerrypeal653
@jerrypeal653 Күн бұрын
@@12voltvids lol , I hear ya !
@anthonysmith4988
@anthonysmith4988 Күн бұрын
Tape says error when I put tape in
@anthonysmith4988
@anthonysmith4988 Күн бұрын
How do I get my camcorder repaired
@12voltvids
@12voltvids Күн бұрын
email me
@djernairchecks
@djernairchecks Күн бұрын
You mentioned noise on HF, have you tried a QRM Eliminator? like a MFJ 1026 or other models, I found it to do well on 80m and 160 as well as AM BCB for knocking out noise with a decent noise reference antenna?
@12voltvids
@12voltvids Күн бұрын
No because apparantly i have lost interest in the hobby. Most of my ham friends are silent keys. All the guys I used to work on fm TV are all dead, probably from the constant exposure to high power transmitters and microwaves and stuff they inhaled. (Smoke, solvents ect)
@djernairchecks
@djernairchecks Күн бұрын
@@12voltvids I've seen some good people taken out because of strange sicknesses in this broadcast industry. I work around high power RF so I try to be cautious when working in high RF environments, one afternoon we were working on a 30KW FM transmitter with the exhaust open from the tube cavity with it operating, I got the worst headache in no time, went away after stepping outside, RF exposure is real. Being a millennial most of my friends can't even spell RF or even have a license, so I get discouraged sometimes trying to work strangers on HF cuz most of the time they are 20+ years or more older than me - a few days ago I answered a CQ from a ham 52 years older than me. But I digress, once again great content you post.
@12voltvids
@12voltvids Күн бұрын
@@djernairchecks OK, so now we are on the same wavelength. I wouldn't call myself an "elder" in ham radio but I have been licensed since the early 90's. Got my ticket just before they removed the code requirement. Got my license mainly because I knew a few guys that had theirs and tinkering around with fast scan TV and microwaves, and EME (earth moon earth) communicayion and AMSATs ect. I played around mostly in the 50 to 2.4GHz bands. I set up an HF station, but never really did much with it. Some code work early on, and some digital modes like AMTOR and RTTY, Packet ect. Mostly on VHF, 220 and 440 FM bands as well as DMR and Fusion modes. Again only talking with a small group that has become much smaller in the past few years with many going SK. When I was in school, I trained for broadcast TV. That was actually my career goal. When I was in high school I worked at one of the local TV repair shops and learned the basics but it certainly was not my dream job. I was being pressured to go work for the telephone company as my uncle worked there, as did my cousin (my mothers twin sisters oldest daughter was an operator) so the pressure was on to continue the family tradition of joining the phone company. Of course being a know it all teenager I wanted none of that but to keep my mother happy I applied when I was in high school, but didn't get selected because the quota was filled. There was a hiring blitz on between 75 and 80 and I didn't graduate till 81. So that was out. I had an interest in TV production as I had been a voluneer at the local community station since I was 16 in 79, which was the minimum age to work there. I enjoyed it, but was told that if I wanted to get a job there for pay I needed to complete the television production course at BCIT, so I went to school. In the end I did get hired for master control in the summer of 82. My dream job, for 5 bucks an hour! That was better than the no pay I had been getting. After about 7 months on the air I had an equipment failure, 3/4" vtr ate a tape on air, and the backup machine was in the shop. My supervisor called to find out why we were off the air and I explained that the only machine I had to go to air with had 10 feet of tape jammed in it. His response was to ask if I called the engineer. I had paged him but he was out for the night. My supervisor asked if I could carefully try to remove the tape and clean the machine. These units had no top cover as cleaning was part of my job. I unwound the tape and left it on the super's desk as he had asked, cleaned the machine and went back on the air. Thought I did a good deed. BZZT WRONG. I was fired the next day as the engineer was pissed at me, and his head was so far up managements ass that when te talked you could see the station owners lips move. Not only did I get fired I found myself on the broadcast blacklist. The letter of recommendation had a knife sticking out of it and into my back. Paraphrasing it went something like I needed supervision and direction as my zest for learning how the equipment operated had annoyed the engineers on multiple occasions. Anyway where was I going with this... Oh yes, 3 of the other guys I knew that were cameramen and one was an editor did their internship and then landed jobs at a new startup station, where they had what I would call unfulfilling careers in TV. I say that because all 3 of them are dead and were dead around the year 2003. Even the guy that did the music I use for some of my recent openings is now dead. He was an engineer, in broadcast, knew the engineers at the station I worked with went to engineering school with one guy, that's actually how I found out about his music. Anyway around 2003 I was out on Canada day at a local park with my kids. Being in the production business I had my betacam out taking home videos. This guy walks up to me and asked who I was shooting for seeing I had a big camera. I told him I was just there with my kids for the festivities. (mine were young 3 and 5 at the time) He told me he was a retired engineer from CKVU TV. Well that was the station that the guys I had worked with in 1980 ended up so I dropped a few names, and then the guy started telling me that all 3 were dead. He pointed at the B/W viewfinder on the camera and said "That killed them, XRays from professional monitors" The 2 cameramen had brain tumors. The field cameraman had one behind his right eye, and t he studio cameraman had one in his forhead right where the monitor would be closest. The editor died of pancreatic cancer. 3 people I knew all working in TV all dead by the age of 40. To make things even scarier my neighbour's son worked for Pixar as a computer animator. His name is in the credits of Finding Nemo, Toy Story and Cars. He worked very long hours sitting in front of large silicon graphics professional 21" CRT monitors. These were something like 20 grand each. and he had several. He also died from internal cancers as have many others that were on his team. He was only in his mid 30's when he passed. His mother gave me his laser disk player and laser disk collection. Lived up the street. I remember him driving his car around with the PIXAR license plate frame (that's on his mothers car now). She is also convinced that radiation from all the CRT monitors got him. There is no love lost between me and CRT monitors even though I di have a small one just displaying the time over my bench. The consumer CRT sets were not bad, as they had to pass the cosmetics and radiation emitting device regulations. The same could not be said for monitors produced for industrial applications. They could crank the crap out of the EHT (and they did) to get a very sharp picture and that resulted in xray production that would never have been permitted on consumer TVs. So, is there a link. I think so. I don't buy into cell phones, and 5G cellular as being bad, but hogh level RF from a transmitter site, and all the xray exposure in TV stations definitely. 4 people I know from the same industry with rare cancers? Actually 5, my business partner died of leukemia. He ran the tape duplicating part of the operation. I would shoot and edit our corporate videos, and Gordie would sit in his garage with 25 VCRs and 25 small 14" TVs and run off copies all day. Many of the productions required 3 or 4000 copies as they were being send out as product demos so he would be sitting in his garage changing 25 tapes every 10 minutes and checking each and every one on all these little cheap TVs all stacked up on shelving in his garage. He would have been in there probably 8 hours a day every day. I had my bank of monitors in the edit suite too, but I was there for perhaps 4 or 5 hours a week in front of them.
@aCrazyAfro
@aCrazyAfro Күн бұрын
Thanks! I thought my Sony Video8 camera died but ordered good swaps and the liquid on Amazon and the next day I cleaned the video head as you showed with the VHS recorder and I got my video image & audio back!! 😄
@12voltvids
@12voltvids Күн бұрын
You got lucky because 8mm uses metal tape that basically needs to be physically ground off the head. You had mild contamination because a clog would never clean that way. The metal particles literally weld themselves to the heads.
@ronnievd8683
@ronnievd8683 Күн бұрын
Technics SE-C01 (amplifier, no receiver) also uses an switched mode power supply wich was in a serperate unit (SH-C01).
@12voltvids
@12voltvids Күн бұрын
High end brands like linn also used switch mode.
@jimburns348
@jimburns348 Күн бұрын
Sounds like a cat with its tail caught in a door.
@robertpowell8760
@robertpowell8760 Күн бұрын
That is not a restoration
@12voltvids
@12voltvids Күн бұрын
Sure is. Thats the limit the owner put on it. Not everyone changes every capacitor. Actually it's the amateurs and crooks that do. I guess if you are a good salesman you can blow sugar up your customers ass and tell them how wonderful it will sound. That only works with the uneducated. Those that know won't buy in. About 10 years ago a customer brought me an amp to recap and after hearing it he brought it back to have the old caps put back in because he did not like the new sharp as a needle sound. He was used to and performed the sound the original caps provided. I did leave a few in the low voltage regulator circuit (they measured bad esr) but all the coupling caps went back in and he loved the sound. New caps, even the audio grade, have totally different characters than vintage. They might spec the same but due to the chemicals used in the electrolytic they sound different. Subtle but different and someone with a good ear can hear this.
@MattyEngland
@MattyEngland Күн бұрын
Thanks for another interesting vid. Enjoy seeing the ins and outs of these older devices.
@chickenfoundation9323
@chickenfoundation9323 Күн бұрын
So what do you recommend on using for replacing the old conductive glue?
@RobsonWilliam82
@RobsonWilliam82 Күн бұрын
He mentioned silicone. Some people use hot glue, but I don't recommend it, as it softens with heat. Silicone is non absorbent and is heat resistant. Every time I apply some kind of glue to the components, I avoid putting it to the leads. Hope that helps you.
@12voltvids
@12voltvids Күн бұрын
Silicone is what is used these days.
@chickenfoundation9323
@chickenfoundation9323 Күн бұрын
@@RobsonWilliam82 thanks, what kind of silicone? Like do you have a link for what you use or name
@12voltvids
@12voltvids Күн бұрын
@@chickenfoundation9323 No links because I just buy it at the hardware store. Just regular down silicone. Not bathtub caulk, that generally has anti bacterial additives that could become conductive. Just regular silicone rubber like you would use on an aquarium.
@roblane4455
@roblane4455 Күн бұрын
Fantastic - Easy to follow instructions that really fixed my problem. Thanks a lot and keep up the good work.
@mabbaticchio
@mabbaticchio Күн бұрын
Brilliant! Nice work as always!
@ashleycox432
@ashleycox432 Күн бұрын
I wish modern SMPS units were shielded like that, interference is still a big problem if you're a fan of analogue radio.
@12voltvids
@12voltvids Күн бұрын
These days interference is out the the window. Led inverters cause lots. Those fancy rope lights that everyone has as decorations create tons of interference. I'm talking the ones where you can have chasing lights that are all connected by a bus and controller that fires the leds. Thats a constant high speed data stream that controls the leds. You thought plaama tv was bad, well the new oled is almost. Sure they don't radiate as much as old plasma but they spill make a racket that interfere with radio. Am and shortwave radio is pretty much on the way out so protecting from interference is not a priority. I remember back when if you owned a shortwave radio people branded you a communist. That was the paranoia of the 60s.
@Barbarapape
@Barbarapape Күн бұрын
The infamouse Sony take on a switching power supply was not the best of ideas. Added to that the glue that goes conductive as it ages and caused a lot of strange faults. I have only had a few of these models on my bench but they all had the same issues as well as the thermal fuse. All the Japanese makers used that dreaded glue, i always remove it when i see it, before i start looking for other faults.
@12voltvids
@12voltvids Күн бұрын
Just remember the Japanese made the best most reliable products. NOT!
@Barbarapape
@Barbarapape Күн бұрын
@@12voltvids I can still remember the first Sony TV i had to try and repair with only a circuit diagram (Schematic) it was like a rats nest of components jammed into to way to little space, no way could you see which number it was. All the brands were the same, if you saw a capacitor made by Panasonic chances are it was faulty. Today they make very little in Japan and outsource production to other makers who use the cheapest parts possible. I have just replaced the backlights in my neighbours Panasonic TV, made by Vestel in Turkey Despite the badge it was no better than the junk sold in the supermarkets.
@marvinwatkins8179
@marvinwatkins8179 Күн бұрын
Well you bought a nother unit back to life some one is going to be very proud 🦚
@m9ovich785
@m9ovich785 Күн бұрын
I had a Very similar Sony out in the shop. I hated the tuning of it, it was very fumbly to do sometimes. Gave it away and went with a more Conventional Marantz Receiver. Thanks Dave....
@Shadepariah
@Shadepariah Күн бұрын
Why on earth did the FCC think these power supplies were going to... Oh right they're the same agency that thought cell phones would cause planes to crash for 30 years.
@12voltvids
@12voltvids Күн бұрын
Led inverter cause plenty if noise.
@stpworld
@stpworld Күн бұрын
I have one of these a later av matrix model I love mine
@hellhound-si5oz
@hellhound-si5oz Күн бұрын
Generally I don't comment until the end of the video but I know exactly the resistor you're talking about. The thing gets so hot that it will blow its own thermal fuse. Although I have a tendency to just to bypass the thermal fuse with a standard fuse, end up the water of the resistor so far, my unit has not blown that resistor
@12voltvids
@12voltvids Күн бұрын
It already has a standard fuse. I have seen many where it is just bypassed.The idea behind the thermal fuse is if someone is driving the crap out of it the resistor will heat up and the thermal fuse will open and kill the power. By pass it and it will just keep going until the the power supply dynamites itself and then you have blown transistors, burnt up transformers and a bunch of carnage. The power supply looks simple but those little transformers that i took the glue off are critical, If not wound exactly correct the new transistors will blow as soon as it is powered up. By blow I mean blow. The plastic is separated from the base. There is malice in that palace.
@ksbs2036
@ksbs2036 Күн бұрын
Fourth time's a charm? KZfaq AI automods keep deleting my comment about microwave fuses. I think they figure its commercial content spam. Anyway, for five bucks you can get microwave fuses at a store that is has a name involving Canada and Car Wheels. Fifteen amps, two in a pack. I've got them in my microwave oven for the last year. Noma
@12voltvids
@12voltvids Күн бұрын
Canucktire
@sgath92
@sgath92 Күн бұрын
Depending on circumstances, the across the line cap is almost optional. I've tried adding/removing them and rarely find they help much. If the set is just going to be used for rare-entertainment/conversation, there's an argument for omitting it. This isn't going to be some ham's DX contest receiver.
@ksbs2036
@ksbs2036 Күн бұрын
And my fuse comment was deleted again. Second time. Weird. I think it is an KZfaq AI moderator that is doing it, but I am getting no warnings or messages
@12voltvids
@12voltvids Күн бұрын
Don't look at me i didn't delete it.
@ksbs2036
@ksbs2036 Күн бұрын
@@12voltvids yeah, I know you didn't delete it. In my last comment I had put in a comment about youtube AI automods probably deleting it and then of course the automods deleted both comments, including the one about the AI automods.
@Masterj3712
@Masterj3712 Күн бұрын
Mr. Volts, did l miss your front panel reassembly? Standard procedure: You keep the door flap in the "up" position with your thumb, then snap on the whole front panel. If you do not, the inner "lifting Lever" would be in the down position, thus unable to lift the door on tape ejection. 😮 please 🙏 correct me if l am in error. Best regards. MJ in B'dos 😊
@12voltvids
@12voltvids Күн бұрын
You must have missed it. Yes the door has to be open when the front is snapped on unless you want to make it a manual eject (hold the door open) machine
@Masterj3712
@Masterj3712 Күн бұрын
@12voltvids Mr. Volts ⚡️On review l did indeed missed this Crucial reassembly mandate. Thks.
@AtariTiger
@AtariTiger 2 күн бұрын
Thank you for making these vids. It gives the electronics hobbyist hope when you can’t even find a willing repairman nevermind parts.
@12voltvids
@12voltvids Күн бұрын
There are fewer and fewer wanting to touch any of this stuff and I can hardly blame them.
@AtariTiger
@AtariTiger Күн бұрын
@@12voltvids It looks daunting but I appreciate the knowledge being passed.
@jameskrivitsky9715
@jameskrivitsky9715 2 күн бұрын
WHOA Dave ! with a vintage little beauty like that.....and your BEST antenna..... you might get "Skip " on a clear night. What a shock if it picked up Radio Free Europe....or a Roosevelt Fire Side Chat....... Skip Land --- Skip Land. I gotta stop sipping the sauce. Have a great week / holiday / or just a cold one. Nice sequel.
@12voltvids
@12voltvids Күн бұрын
It probably will.. customer called me back to say how well it works. Money well spent.
@helmut3356
@helmut3356 2 күн бұрын
Display is dark and blured.
@12voltvids
@12voltvids Күн бұрын
Looks great to me
@snakezdewiggle6084
@snakezdewiggle6084 2 күн бұрын
Yay tube theory.! I wonder how many minds out there you've just blown😆. Not many know this, and you can check it with EPA and NIST, the wire "coatings" are, Talc, Asbestos, Vulcanized Polyisoprene, and sometimes, woven cotton, or bakelite. Capacitors in Valve circuits are correctly know as Accumulators. Weird, I know, but I didn't write rules. I just went to school in the Navy, and the Air Force.
@sgath92
@sgath92 Күн бұрын
Asbestos was only really used as wire insulation for appliance power cords (like toasters, electric space heaters, clothes irons etc) and maybe curtain burner power cords. In 30s US radios they're either magnet wire like motors/transformers use, cotton or various early attempts at rubber wire (these are usually the worst, they get rock hard and then shatter into tiny flakes if disturbed). This is like saying "transformers contain PCBs, you can check it with the EPA." Sure, that's true for certain eras of power grid transformers but in an antique radio from the 20s or 30s that's just fear mongering and not true at all. The old timey radio transformers are potted in things like wax or run of the mill tar.
@12voltvids
@12voltvids Күн бұрын
Yip asbestos was used alot in old electronics.
@drsysop
@drsysop 2 күн бұрын
Do you have a tube tester & a signal generator? What about the Shortwave part as you can get some signals there. Great job & love these classic radios. -Cheers!
@12voltvids
@12voltvids 2 күн бұрын
I do have a tube tester. Also an old sig gen but I wouldn't trust it as it hasn't been turned on since 1969. Its only guaranteed to misaligned stuff
@drsysop
@drsysop Күн бұрын
@@12voltvids Got ya maybe you find a newer one to work with. Awesome job as always. -Cheers!
@nikspanakis
@nikspanakis 2 күн бұрын
Spray silicone lube doesn't allow solder to bond to plastics. For this app is the best. I clean the inside and o-ring with a soft brush and brand new it is. The only real problem on these sυckers 😇 is the tips wearing up.
@12voltvids
@12voltvids Күн бұрын
Tips are cheap
@snakezdewiggle6084
@snakezdewiggle6084 2 күн бұрын
That's bold.! Wax vs Heatgun.
@12voltvids
@12voltvids 2 күн бұрын
What wax. They are removed.
@snakezdewiggle6084
@snakezdewiggle6084 2 күн бұрын
@12voltvids Well, you know what they say, if you gotta ask ....
@Marroyol
@Marroyol 2 күн бұрын
Además del termoretractil se puede usar el tubo de tinta de un bolígrafo BIC cortado a la medida necesaria. Tengo un Bettor Dual 1224
@12voltvids
@12voltvids Күн бұрын
Screen spline works perfectly for stuerpimple.
@marvinwatkins8179
@marvinwatkins8179 2 күн бұрын
Happy memorial 🌞 day you really did an excellent job