This deck brings back some memories! It was the first VCR I ever purchased when I was in my 20's, and I remember it was quite expensive for me to buy. It stopped working long ago and I threw it away, wish I had kept it to repair! Strange enough, I still have the remote control for it.
A good job with interesting and quite rare machine from Sony. Thanks again for sharing! These generation of VCR decks share similar problems, but this one is really well designed, easy to maintain and quite easy to access. The mechanism is based on a metal plate you found only in high quality machines in the 90's (most where composite or plastic based). You could expect some fragile Nylon gears in all these VCR, and as a professional, you end knowing the models prone to fail or the weak point of a series, here the "blue gear" (the white color suggest it could have been replaced). It's a classic problem in most Sonys... Most of the early 90's VCR machines suffered from bad caps, mainly as in this one on the switching power supply (high temps...), but also leaky CMS caps everywhere in the synch board and in the head HF board. Apparently, it's not a problem here! 7809 is not the easiest regulator to find nowadays, so a variable LM317 or equivalent is always a universal solution, as far as you have spare volume for additional resistors and pot. I also bet this machine has few use hours or has regularly been checked and cleaned, I've seen few of these 25+ years VCR so clean inside and with so nice head levels. The head drum looks pristine! I knew of the finger trick for other machines (Mitsubishi, Philips...), this is always interesting to see it also works on these. Sony was late in the VCR business, but built these with a quality level you could find in audio ES series. I also remember they were far from the entry level budget!
Can this one be repaired? of course it can !! you seem to know every trick in the book when it comes to repairing these complex machines - spiffing video I enjoyed every minute
Trying to repair oldies goldies from time to time sometimes is good especially when the fault fixes.Yesterday i repair a philips 25 inch crt with dark picture and strange colours by regenerating the tube using my forgotten muter BMR 95 screen rejuvenator and i felt like i was 30 years old and working in my service shop again.
Great job as usual. That wet finger trick sort of harkens back to the early days of electricity, where people were mesmerized by the almost magic displays, put on by early pioneers in the field.
The wet finger trick is a great way to localize faults on LOW VOLTAGE circuits. So before anyone attempts this you need to know the circuit and the voltage involved. As you saw it quickly proved that the motor and the drive circuit was working. From the symptom i knew immediately that i had a missing voltage because the capstan took off at full speed. Power supply with those bad caps is a no brainer but when that was dealt with the next stage the regulators.
Every year there are fewer and fewer of us left. They are all starting to drop like flies now. Out of all the guys i knew from the other local shops back in the 80s and 90s there are only a few still around. Most of the guys a little older than me are all gone now. Smoking and chemical exposure did a high number of them in. The cleaners when I got into the industry were starting to get safer. The stuff that goes back to the 60s and 70s was really bad. Even the guy that ran the parts shop dropped dead of cancer. You could smell the stuff in his shop even with it just sitting on the shelf, there was exposure and most used to come in a glass bottle so something gets broken and you have a problem. Glad I got out when i did. Now more of a hobby, an excuse to make TH-cam videos.
i had 2 sony slv-575uc machines one was given to me the other i bought at a thrift store. one of them that had a broken gear by the pinch roller under the swinging arm also that arm would not move i had to oil it. but them it had another problem when it played LP or SLP tapes it would speed up and slow down. i heard online that it was the bearings in the pinch roller going bad. so i just decided to sell it.other that that it was a nice VCR i think they used the same mechanism in other machines
Yup bent capstan bearing housing. Just put needle nose pliers on it and bend it back. You can tell the old from new type. Old bendy type is copper colored cap and new type was silver. Can you tell what this one had?
@@12voltvids the copper one. mine probably had the same as it was from 1990. i can't remember if i tried bending it back or not. but i don't think i did other that that problem it was a nice vcr. i have a Panasonic AG 1970. I got it off of ebay for $40 about 7 yrs ago & it's still working so far
@@12voltvids so many folks have old vcr tapes that they are now finding, since they are stuck at home.. I have at least 4 old VCRs just so I have a way to play them.
It is an FM RF carrier so a flat waveform is what you want. Misalignment will cause dips in the RF signal as the head moves away from the track. It's really easy on a scope to see this. Analog CRT scope preferred.
@@crashbandicoot4everr Special machine as they didn't just have mono scope or color bars. They had frequency sweep and special tracking portions to the tape with signal only recorded on the A Field head. You aligned to a half field that way cross talk could be seen on the blank track.
I have a Sony VCR that uses the same mechanism and broke the blue gear. I replaced the gear and noticed the head drum wouldn't spin up which ended up being a failed solder connection on the board. Can you do an in-depth vid on how to align the tape path with the scope? I had to realign the tape path as the bottom of the picture was distorted and the Hi-Fi sound wouldn't work properly. I just aligned until the picture looked as good as it could and the Hi-Fi sound was rock solid. I wonder if I need to recap the power supply on my unit as the VFD is very dim.
Thanks for another great video. You mentioned that this deck has on screen display and a separate output that does not include the OSD. Not all decks have this feature, some have software configurable options yet others don’t. How about making a video on how to defeat this functionality in a VCR that doesn’t have it? This would be useful for video dubbing purposes.
You can't really defeat as it is done in video processing stage. You can turn off with remote on most. Sony had dual our, one for tv other for dubbing.
Great and educational repair, thumbs up. This video reminded me an SLV-777 I left aside: doesn't power on from standby, PSU is recapped and tested OK (all voltage rails are good if you bypass the PowerUp signal). Micom clocks oscillating and power button tested good. Maybe dead microcomputer? Was that common in these series?
Hi, mir ist aufgefallen, dass Du Sony VCRs mit verbundenen Augen reparieren kannst. Ich bewundere Deine Fähigkeiten und liebe Deine Videos. Bitte immer weiter so.
I have a Pioneer VSX-5000 plays great but I can't get tuner to play stereo would you know why? I hooked a played an mp3 player and it worked fine! So I know it's not an issue with stereo amp must be something else! Hmm..
Well done! I have a Sony SLV-N500 that has suffered the loss of one of the internal rubber wheels. It turned to goo and slimed the drum head. I managed to clean up the drum, but now I need a replacement wheel. The part in question comes in contact with the drum from the area behind the drum. Can you possibly point me in the dirrection of such a part? Thanks.
I wonder what happened to that guide post really because it wasn't broken during first tape load and then it was suddenly misplaced in next clip. Maybe something interesting happened between those clips or did it just happen to fail during initial tests?
i have an old panasonic omivision pv 123r that ive taken in to get repared due to preserving history, and we got everything working on it except the drum is intermittent. sometimes it doesnt spin at all. the repair guy is doing research but do you think you might kow what is wrng? weve replaced the caps in the power supply, cleaned the mode switch, and roughed up the idler tire.
@@manwichamn44 Don't overlook the hall effect devices that are part of the motor. They determine the direction the motor starts to generate the 3 phase drive signal. Lose a hall effect device and the motor will just sit there doing nothing. Check the connections where the drum motor connects. I have had bad connections on old VCRs. Good luck with your repair.
Most switch mode supplies can run 100 to 240 but not all. To run at 240 they need a primary cap rated 450 volts. If the primary filter is rated 250 and you put it on a 240 circuit there will be smoke.
I have a smart light bulb that died after 12 hours of use was wondering if you would be interested in checking it out? Don’t know how to private message you,
Well done dave. Well that is an odd mix of natural failures and halfbaked pillock repairs. More than one person trying to get it working, assholes. I have had a similar sony to repair millions of years ago, same psu and baked to death.
And the mad scientist resolves another machine problem and fixes it. I love to watch you work. Keep up the good work my friend.
Amazing! The only thing better than watching a real pro fix an old VHS is watching him fix your own Sony VHS machine. Very cool.
It's always nice to come home from work and see 12voltvids has uploaded a new VCR repair video, keep up the great work
This deck brings back some memories! It was the first VCR I ever purchased when I was in my 20's, and I remember it was quite expensive for me to buy. It stopped working long ago and I threw it away, wish I had kept it to repair! Strange enough, I still have the remote control for it.
A good job with interesting and quite rare machine from Sony. Thanks again for sharing!
These generation of VCR decks share similar problems, but this one is really well designed, easy to maintain and quite easy to access. The mechanism is based on a metal plate you found only in high quality machines in the 90's (most where composite or plastic based). You could expect some fragile Nylon gears in all these VCR, and as a professional, you end knowing the models prone to fail or the weak point of a series, here the "blue gear" (the white color suggest it could have been replaced). It's a classic problem in most Sonys...
Most of the early 90's VCR machines suffered from bad caps, mainly as in this one on the switching power supply (high temps...), but also leaky CMS caps everywhere in the synch board and in the head HF board. Apparently, it's not a problem here! 7809 is not the easiest regulator to find nowadays, so a variable LM317 or equivalent is always a universal solution, as far as you have spare volume for additional resistors and pot. I also bet this machine has few use hours or has regularly been checked and cleaned, I've seen few of these 25+ years VCR so clean inside and with so nice head levels. The head drum looks pristine! I knew of the finger trick for other machines (Mitsubishi, Philips...), this is always interesting to see it also works on these.
Sony was late in the VCR business, but built these with a quality level you could find in audio ES series. I also remember they were far from the entry level budget!
Can this one be repaired? of course it can !! you seem to know every trick in the book when it comes to repairing these complex machines - spiffing video I enjoyed every minute
Trying to repair oldies goldies from time to time sometimes is good especially when the fault fixes.Yesterday i repair a philips 25 inch crt with dark picture and strange colours by regenerating the tube using my forgotten muter BMR 95 screen rejuvenator and i felt like i was 30 years old and working in my service shop again.
Great job as usual. That wet finger trick sort of harkens back to the early days of electricity, where people were mesmerized by the almost magic displays, put on by early pioneers in the field.
The wet finger trick is a great way to localize faults on LOW VOLTAGE circuits. So before anyone attempts this you need to know the circuit and the voltage involved.
As you saw it quickly proved that the motor and the drive circuit was working. From the symptom i knew immediately that i had a missing voltage because the capstan took off at full speed. Power supply with those bad caps is a no brainer but when that was dealt with the next stage the regulators.
@@12voltvids Yeah, for sure you have to know what your doing.
I wish we have a technician like you in Ireland. well done !!
Every year there are fewer and fewer of us left. They are all starting to drop like flies now. Out of all the guys i knew from the other local shops back in the 80s and 90s there are only a few still around. Most of the guys a little older than me are all gone now. Smoking and chemical exposure did a high number of them in. The cleaners when I got into the industry were starting to get safer. The stuff that goes back to the 60s and 70s was really bad. Even the guy that ran the parts shop dropped dead of cancer. You could smell the stuff in his shop even with it just sitting on the shelf, there was exposure and most used to come in a glass bottle so something gets broken and you have a problem. Glad I got out when i did. Now more of a hobby, an excuse to make TH-cam videos.
@@12voltvids thanks for your great work. It inspired me to did my toys. I would like to learn more trouble shoot skill.
@@12voltvids Take care of yourself! I wish you health.
"Wet finger trick" - awesome!
You are the King of vcr man!
Great job again!
My grandfather work on lot of those VCR back in the 80s and 90s.
Excellent man!!! I have 1 Sony slv 825! How can I align the tape without oscilloscope?!
i had 2 sony slv-575uc machines one was given to me the other i bought at a thrift store. one of them that had a broken gear by the pinch roller under the swinging arm also that arm would not move i had to oil it. but them it had another problem when it played LP or SLP tapes it would speed up and slow down. i heard online that it was the bearings in the pinch roller going bad. so i just decided to sell it.other that that it was a nice VCR i think they used the same mechanism in other machines
Yup bent capstan bearing housing. Just put needle nose pliers on it and bend it back. You can tell the old from new type. Old bendy type is copper colored cap and new type was silver. Can you tell what this one had?
@@12voltvids the copper one. mine probably had the same as it was from 1990. i can't remember if i tried bending it back or not. but i don't think i did other that that problem it was a nice vcr. i have a Panasonic AG 1970. I got it off of ebay for $40 about 7 yrs ago & it's still working so far
Great repair! So it was the regulator that cause the drum not to turn?
having just 20s and you got my thumps up. I#d just wanted to ask for a Repair of a VHS machine as there is one on my desk ... Thank you!
Wow, three problems. Most techs would of given up on this one. VCRs making a comeback.
Nice design by SONY.
VCR making a comeback? What have you been smoking!
@@12voltvids so many folks have old vcr tapes that they are now finding, since they are stuck at home.. I have at least 4 old VCRs just so I have a way to play them.
how do you know what is supposed to look like on the scope when you do the alignment?
You align the tape path until the envelope/waveform becomes as flat as possible.
@@crashbandicoot4everr interesting... I was wondering that too
It is an FM RF carrier so a flat waveform is what you want. Misalignment will cause dips in the RF signal as the head moves away from the track. It's really easy on a scope to see this. Analog CRT scope preferred.
@@12voltvids How did the manufacturers make alignment tapes? Did they just use a reference machine or did they use a custom-made one for that purpose?
@@crashbandicoot4everr
Special machine as they didn't just have mono scope or color bars. They had frequency sweep and special tracking portions to the tape with signal only recorded on the A Field head. You aligned to a half field that way cross talk could be seen on the blank track.
I have a Sony VCR that uses the same mechanism and broke the blue gear. I replaced the gear and noticed the head drum wouldn't spin up which ended up being a failed solder connection on the board. Can you do an in-depth vid on how to align the tape path with the scope? I had to realign the tape path as the bottom of the picture was distorted and the Hi-Fi sound wouldn't work properly. I just aligned until the picture looked as good as it could and the Hi-Fi sound was rock solid. I wonder if I need to recap the power supply on my unit as the VFD is very dim.
Thanks for another great video. You mentioned that this deck has on screen display and a separate output that does not include the OSD. Not all decks have this feature, some have software configurable options yet others don’t. How about making a video on how to defeat this functionality in a VCR that doesn’t have it? This would be useful for video dubbing purposes.
You can't really defeat as it is done in video processing stage. You can turn off with remote on most. Sony had dual our, one for tv other for dubbing.
Great and educational repair, thumbs up. This video reminded me an SLV-777 I left aside: doesn't power on from standby, PSU is recapped and tested OK (all voltage rails are good if you bypass the PowerUp signal). Micom clocks oscillating and power button tested good. Maybe dead microcomputer? Was that common in these series?
No never saw a Micon failure.
Hi, mir ist aufgefallen, dass Du Sony VCRs mit verbundenen Augen reparieren kannst. Ich bewundere Deine Fähigkeiten und liebe Deine Videos. Bitte immer weiter so.
I have a Pioneer VSX-5000 plays great but I can't get tuner to play stereo would you know why? I hooked a played an mp3 player and it worked fine! So I know it's not an issue with stereo amp must be something else! Hmm..
Well done! I have a Sony SLV-N500 that has suffered the loss of one of the internal rubber wheels. It turned to goo and slimed the drum head. I managed to clean up the drum, but now I need a replacement wheel. The part in question comes in contact with the drum from the area behind the drum. Can you possibly point me in the dirrection of such a part? Thanks.
If you're referring to the Head cleaning wheel that makes contact with the upper drum as the tape loads and unloads just get rid of it
@@12voltvids Thanks for the reply! Ha! I came to the same conclusion. The deck works just fine without it.
I have A VCR but that is not in working condition, vedeo tape is closed inside, power supply is ok. Can that repair if yes then where?
I have the same Vcr, it plays but it goes to fast on play and no sound. Can't get my finger behind it. Could it be the the rotary switch?
Good fix on that one. Is that a dual speed machine?
Sp/EP with LP playback capability.
@@12voltvids Yes, I thought that, not my go to make though, that and Sharp can go where the sun don't shine. I hated Sony TVs, bitch to repair!
I wonder what happened to that guide post really because it wasn't broken during first tape load and then it was suddenly misplaced in next clip. Maybe something interesting happened between those clips or did it just happen to fail during initial tests?
It obviously was loose. You can hear it pop the first time i ejected the tape. No mystery here.
@@12voltvids Great that it got loose there then instead of during shipping back to the owner.
Seems that super glue on guide wont last long. Used it on moving parts before without much success.
Not a moving part. The pin should never move. The mechanical action is on the bottom side.
Thanks for Finger trick to know if ic working
How do i get lock washer??
hello sir lg combo vcr blinking colors. please help me
i have an old panasonic omivision pv 123r that ive taken in to get repared due to preserving history, and we got everything working on it except the drum is intermittent. sometimes it doesnt spin at all. the repair guy is doing research but do you think you might kow what is wrng? weve replaced the caps in the power supply, cleaned the mode switch, and roughed up the idler tire.
Check the drum servo circuit.
@@12voltvids hes going to check that next thanks! will update!
@@manwichamn44
Don't overlook the hall effect devices that are part of the motor. They determine the direction the motor starts to generate the 3 phase drive signal. Lose a hall effect device and the motor will just sit there doing nothing.
Check the connections where the drum motor connects. I have had bad connections on old VCRs. Good luck with your repair.
@@12voltvids How to check hall effect sensor with multimeter
Really nice work!
Wasn't the SLV-70HF the first Sony VHS VCR which actually had a Hitachi mechanism?
SLV-201, with Hitachi mecha. I still keep a complete deck of one.
Have you tried that new UV Light Cured glue (Bondic brand I think) yet?
Not yet. I was thinking if getting some and doing a review on it.
Which might be the problem when the tape tension Is not good after the load?
Is the felt pad still on the tension band?
Yes, tension band seems in good condition. But the tension arm seems don't Press quite good the tape on the erase head and on the next roller
Is it difficult to repair a power supply that runs on 100volts when it’s plugged into 220 volts ?
Most switch mode supplies can run 100 to 240 but not all. To run at 240 they need a primary cap rated 450 volts. If the primary filter is rated 250 and you put it on a 240 circuit there will be smoke.
@@12voltvids ok thank you sir
I did hear a pop like a party popper
My cheap eBay step down went 220 volts 😂
@@12voltvids so do you think I would just need to replace the primary cap ?
I remember models like this, upwords of $800 in the 90's. My relatives ruined mine.
I have a smart light bulb that died after 12 hours of use was wondering if you would be interested in checking it out? Don’t know how to private message you,
I would return it and get a replacement.
sony vhs vcr supply
nice
repair blue gear thanks to you
Screws snap if they never were removed
2,50 $ in parts and working again ;)
That's about right.
Well done dave.
Well that is an odd mix of natural failures and halfbaked pillock repairs.
More than one person trying to get it working, assholes.
I have had a similar sony to repair millions of years ago, same psu and baked to death.
Check out my slvr5 repair if you want to see a real botched attempt by a prior tech.
🖒Hi from Russia.
Sony suck at power supplies for some reason.
So did Mitsubishi and they were linear power supplies.