Sony SLV 757 with a very bad picture. Can this one be saved?

The 2 first VHS models that Sony brought to market was the SLV555 and SLV757. This would have been 1989/90 somewhere in there. This one has had the blue gear and other work done on it over the years and has devoloped a bad picture. Lets attempt to fix it. Real time repair, no editing.

[@westfield90]

I really enjoy your videos. Depressing how we have become such a disposable society and where everything is made to be thrown away and purchase a new one when it breaks.

[@wdavem]

Wow, I knew Sony didn't like vhs but I didn't realize their first machines look that "recent". Before I read the date in your description I was expecting piano keys. Decent vhs sound and picture now!

[@12voltvids]

Woohoo First!

[@hawaii6282]

Another fine repair Thanks Mr.Fixit....👍

[@NunYa953]

Is that intro "Hocus Pocus"?

[@12voltvids]

@@NunYa953 An edit from it yes

[@NunYa953]

@@12voltvids You should check out the Gary Hoey cover of that song. Unbelievable!

[@NunYa953]

@@12voltvids I do hope you can help me with some TV repair advice. I picked up a free Samsung LN46A630M1FXZA free. It had the power cycling problem so I replaced the the components to resolve that issue. It comes right on. Now, it has kind of a double picture just until it warms up. Should I replace the T Con or is it a bad connection at the panel?

[@robertgaines-tulsa]

I hate automatic track selection on the audio. I didn't know there was a way to fix it if it couldn't lock on. I always thought it was a recording defect. Often, I just went with the hissy, monural linear track if it was too much of an issue. I guess it is only on some VCRs where you can force it to stay on the HiFi track since mine just autoselected on the HiFi setting. By the way, I find the boring stuff interesting. I just am never bored of capacitor replacements. People can always skip ahead in my opinion.

[@12voltvids]

That is usually an alignment issue. The hifi audio track is much narrower than the video track, and is recorded to a deep layer of the tape and the video laid over it on the surface at a different recording azimuth, so it is much more difficult to recover the audio. Head wear affects the hifi track before the video track.

[@Vintaginside]

Great video and quite explanatory as always. You are one of the nowadays valuable old school techs. I hope you were not overseas as my SLV757 is stuck on standby. Clock flickers 0:00 but keys are not operative, autotracking led remains lit. Changed PSUs caps, checked oscillators on both main ICs, reset signals, voltages seem OK. Does not wake up with remote nor attempting to insert a tape... I am desperate with the damn machine.

[@CotyRiddle]

rated at 85 and it was right next to a large power resistor Niccceeee..... You could even see the dark spot on the cap from the excessive heat.

[@12voltvids]

One of the ugliest Sony power supplies I worked on was this one. An SLVR5 that was given to me. It needed much work to make this beast work again. kzbin.info/www/bejne/o3K8m4Sfhaeii68

[@nor4277]

I wouldnt think sony would cheap out on those caps,maybe it was the designers,I wonder how much more better caps would have cost or a different kind of a cap ceramic?

[@12voltvids]

@@nor4277 Sony probably didn't make the power supply. They bought it as an assembly. Initially these were not even a serviceable part. They were "too dangerous" to repair and had to be ordered and replaced at a cost of 100 for the PSU.

[@nor4277]

Designers what can you say about designs that werent that thought out,or they did that so you would have to buy a new thing?

[@BavarianM]

@@nor4277 the design is thought out Who picks the components is who was retarded

[@claudiogatti5529]

Good job! I changed those capacitors on my 757 too. Now I should solve another problem: when I insert a cassette the initial transparent queue blocks each command and after 5 seconds the cassette is ejected. If I cover the infrared sensor on the right the 757 accepts each command. Can I repair the sensor on the right and, if so, how or should I change it? Thanks for your great videos also from Italy.

[@BavarianM]

Broken solder joint on the sensor

[@shaun9107]

About 27 years old .

[@Synthematix]

Id love a capacitor tester like yours, where did you get it from m8?

[@12voltvids]

It was a kit I built about 30 years ago. The one I built is long out of production but there are plenty of others available that do the same thing.

[@glenngoodale1709]

Keep up the good videos brother oh .... first lol

[@sjn7220]

What percent of your repairs are due to bad capacitors?

[@abc-ni9uw]

I had all these and the slv-777ub. With fake wooden/mahogany sides. I love the sound of when the transport mechanism is loading

[@NunYa953]

Got my 12 volt fix today by midnight 💉😎

[@BavarianM]

I have one of these that I bought for cheap a few years ago Had a broken blue gear and bad capacitors Has been rock solid since

[@dhpbear2]

12:35 - What are you looking for while tweaking the tracking?

[@vincef7540]

@12voltvids Great Job on the repair. I hope you can help me with my Yamaha receiver HTR-5750. it turns on but shuts down right away after taking it out in working condition from storage???? I'm getting PS PRT : 019 C error code in diagnostic mode. any help would be much appreciated. thanks

[@zx8401ztv]

Good call, i've seen those psu's before, they were always cooked really well. I did think psu but did not know it was a switchmode. I've had 78xx regulators cause herringbone effects on vcrs too, capacitors was the cause, no supprise there lol.

[@mrnmrn1]

Sorry for the bad news, but it's NOT a Rubycon at 8:50. That's a fake one: Rukycon. If you watch the logo closely, you can see that the 'b' is actually a 'k'. And also the other markings are wrong. There is no RA series Rubycon cap existing. The 'SL36' also doesn't make sense.

[@mikaelandersson4733]

Exactly my thought too! I´ve commented this earlier on an other video but never got any response... There´s no "bung" underneith, the typing is not Rubycon-style and neither is the vent on top.

[@007ben009]

Agreed, That's no Rubycon cap! Rukycon?? 100% fake.

[@dhpbear2]

Sony embeds the date-code in the plastic chassis on the right of the unit (16:30) :)

[@markanderson350]

I would have guessed the same thing, the bars are a difference between the power supply and the video frequencies. You solder much like me on consumer grade boards, use the tip to open the holes.

[@iulianispas8634]

My Panasonic NV-HD100 after 12 years of sitting in the garage I play a tape and had really bad picture lines an distortion all over But after 15 min of play I think the head auto clean and perfect beautiful dvd quality pictures and sound (this was a hy end model with karaoke, tv tuner , scanner on remote

[@drdma1]

Have You ever faced a digital problem in 757? No OSD / no menu at all. Playback / record / servo is ok.

[@robbobob3942]

Great excellent work as always

[@AThreeDogNight]

I thought that style looked familiar, blue gears. Another far & few between, an easy fix once in a while.

[@CotyRiddle]

very nasty solder work there. whom ever did that did not clean it up.

[@josephnealescratchcards]

Amazing fix on video as always

[@dazasmit2048]

I still have this model ,I think the blue gear was a common fault as I had to fix mine.

[@12voltvids]

The blue gear was a very common fault on all the sony vcr that used this chassis.

[@speedyboishan87]

@@12voltvids Were Sony VCR's reliable some were the ones with LCD OSD which was in white the later ones were of different color and were made cheaply. No wonder the later VCR's were junk.

[@dhpbear2]

1:00 - My guess, having only watched the video up to this point. Audio Frequency oscillation or bad filtering of a switching supply (if one exists).

[@ThatOneTruckGuy]

So early, the quality only goes up to 360p lol

[@12voltvids]

Give it time. 1080p

[@CotyRiddle]

dont feel bad. youtube likes to default me to 480p and I have a 400Mbps connection (can get over 360 consistently)

[@dhpbear2]

Interesting. This is the first video I've seen that deals with temperature ratings of electroytics!

[@Barbarapape]

Sony SLV series VCR's are reknown for capacitor issues to the extent that you could buy repair kits with good quality 105 deg capacitors. I had a top range SLV777 that developed similar issues and a dim display all caused by capacitors. These models gave a good performance and had decent mechanisms compared to other brands.

[@12voltvids]

The Elna fish oil caps were a big problem back in the day. Not just Sony. Mitsubishi was also fighting back caps as was Panasonic. Everyone praises the Japanese made equipment and it had just as many faults back in the day.

[@Barbarapape]

@@12voltvids Capacitors have always been a source of many faults, Tantalum's were prone to going shorted. Whenever we seen any Panasonic gear the capacitors were the first suspect. Regarding reliability, Japanese gear were little beter than any other USA or UK gear, i often cursed them as they paid little thought to servicing in their designs.

[@nor4277]

Very cool repair,its a shame they put in low temp caps,cheap,

[@rawr51919]

It's a good reason why you shouldn't cheap out on caps. Always get caps rated for the job (temp-wise, rating-wise, etc.) Apparently Sony didn't follow that advice very well when this unit came off the line.

[@cardboardboxification]

Ron Thompson the caps outlasted the technology

[@nor4277]

@@cardboardboxification dont you think it would still be working ,with high temp. Caps,was it a money saveing thing ,or planned obsolescents

[@cardboardboxification]

Ron Thompson vcr has been obsolete for 15 years now.... I have a, hp 83732a that I got for $100 and replace a couple of bad caps in the power supply and it is working perfect, but it’s a $40,000 signal generator... Consumer goods How Long should they last??? But price is a factor... In my garage I restored a 50’s tv I have it playing 50’s sci if movies while I’m working in their ... fun to have a vacuum tube tv... No electrolyte caps last forever, and replacing them is just maintenance for gear you want to use...

[@nor4277]

@@cardboardboxification I have seen a pretty good tech who decide to use those blue high voltage disk caps ,as a replacement for wax caps,and electrolytics ,seem to work great ,I been reading and seeing info electrolytics are a crap kind of a cap in the first place,I to much of a dam novice to no.

[@markmarkofkane8167]

Degrees Celsius? We use Fahrenheit in the USA. So, 105° C would be about 220° F, correct?

[@michaeltempsch5282]

Yes, boiling point of water is 100C / 212F, and there's 1.8F to 1 C. The additional 5 C equals 9F, so 212+9=221F

[@joyaljoseph1131]

Thanks for your help in repairing my power supply..

[@crashbandicoot4everr]

Sony announced production of VHS machines in 1988 but I think their first ones used a Hitachi chassis.

[@12voltvids]

Incorrect. The first Sony was the slv555 and this one the 757. All manufactured by Sony in Japan. Hitachi made many rca vcrs

[@shimanosv9143]

I have 656EE, Made in France.

[@supercow61]

Awesome job !!!