sony slv n750 vcr with some problems

A late model Sony VHS VCR. It is what it is.

[@probnotstech]

I always enjoy your stories about your history with electronics. I have this exact model (bought new in box for $5 at garage sale about a decade when working VCRs were everywhere and no one wanted them). It's digitized something like 500 tapes, and has been really good to me so far. Only complaint is the absolute crap linear audio that all these Samsung-made machines had.

[@STBRetired1]

I learned many things from this video. The first is that all these SLV-Nxxx Sony VCR's are pretty much the same mechanically. My SLV-N55 looks identical mechanically to this SLV-N750. My VCR sat unused for the past 12 or more years. I pulled it out and ran a couple "cleaner" tapes through it. DON'T EVER USE CLEANER TAPES. They left more gunk on the heads than was there before. So, I used foam Q-tips and alcohol and cleaned the heads nicely. Unfortunately, I broke a tape guide in the process. I bought three cheapie N55's off of eBay for parts (or repair). If I can't use one of their tape guides then I'll epoxy mine into place, I guess.

[@fawad.rashid]

Your story into the electronics profession was very insightful, thank you for sharing it with your viewers and I hope to hear more of your professional journey

[@brunolagace1135]

I love the story about your entry in electronic!

[@lawrencecavens5760]

Like we use to do in 4H - our motto saying was {Learn by doing} . Like I have said in one of your other video's You are a great credit to the profession David - It's always a pleasure learning from what might be able to be fixed, And it's nice to see you do your utmost best with trying to keep fixable units out of the landfill.

[@12voltvids]

This one is mine now, so I will be looking for that chip to get this one running.

[@computerworlds]

You are really a professional in your work. I watch your video from Iran and I wish you good health.

[@kfreiberg]

If you made a series of videos called "12volt Flashback" going over your electronics history, it would be amazing. I have a feeling you have plenty of interesting stories to tell.

[@andynoon2584]

Thanks for telling us how you got interested in electronics. Very interesting.

[@matambale]

Early stage cabin fever: you start talking to your bike Late stage cabin fever: it talks back to you

[@12voltvids]

Oh it will definately talk back to me as soon as i hit the starter. We will have a great conversation cruising through the mountains. Anyone that rides will know exactly what i am talking about. That's why we ride. Car drivers don't get it.

[@Sans_Solo_]

Cool story at end Dave....thx for sharing. Great to have mentors early in life.

[@Tedybear315]

I saw the word "Funai" and my heart sank. LOL! That company makes so much for other brands including their own. And it's almost guaranteed to work as long as the warranty is in place. Once outta warranty? You're SOL! Odd to see this one was a Samsung variant. I've used Samsung for ages and usually things work okay (so far) You can see this one was painfully built to a cost point.

[@Gljin40509]

I started working in a tv repair shop in my hometown at age 11...back in the early 1960`s...like you,in the tube era.....the brand of color tv`s we sold..when color was just starting to catch on,was Setchell Carlson.

[@SavageGame1998]

This mechanism was actually made by Samsung, this was their very last VCR mechanism they ever made.

[@mrnmrn1]

The whole VCR is Samsung. They made this mechanism for quite a long time, mine is from 2002, and I recently bought a DVD-VCR combo from I think 2009, it still has the same mech.

[@goyadressunofficial]

@@mrnmrn1 The Made in Korea sticker on the back gave it away.

[@mrnmrn1]

@@goyadressunofficial Based just on that, it could be Daewoo or LG as well.

[@goyadressunofficial]

@@mrnmrn1 Did they make their own transports?

[@mrnmrn1]

​@@goyadressunofficial Not completely sure, but I think yes, they both made their own mechs - at least for a period, which might mean the GoldStar times for LG. I'm sure GoldStar made at least one transport, I had one, I might still have it somewhere. It was a pretty nice diecast aluminum mechanism, it had a "Daewoo" badge casted into the base plate. Their later transports might be something generic, but they don't remind me to anyithing else. *EDIT* : now I'm being confused if it was Daewoo or GoldStar... but surely one of them!

[@donhiscock6933]

Grate video loved the story of how you got interested in Elctronicks would love to hear more. My first kit was a crystal radio kit from RadioShack next was a 509 Audio Amplifier from Camgaurd Electronic supply. Wich if you remember was down by Boundry and first Ave in Vancouver. I enjoy your videos veary much your friend Don Hiscock.

[@mrnmrn1]

My first guess would be either the small filter cap of the VCC for the IC (bootstrap cap) has high ESR, or if it has a parallel zener, it might be shorted, or the shottky diode from the auxiliary winding of the transformer to the bootstrap cap, it might be shorted as well. The IC doesn't look cooked, but yes, it might be faulty. This is a Samsung VCR with Sony badge! The mechanism looks flimsy, but not as bad as it looks, actually quite reliable. The clutch under the pendulum gear fails often, but not much more common faults.

[@tamarakurtz6690]

That gear on front left with the belt. Does belt go around the gear or is it actually attached to the plastic around it? Mine is torn unfortunately and I need to know if it's replaceable? As I don't know what it looked like beforehand? I have the Slav-n51. But my insides look the same as your machine! Thanks

[@josericardogs1435]

Actually the entire machine was made by Samsung, not only the mechanism.

[@countzero1136]

I have a Samsung VCR here which looks almost identical to this thing other than the badge (and the fact that mine is a European model so has a SCART socket too of course)

[@josericardogs1435]

@@countzero1136 I have a DVD/VCR combo unit made by Samsung as well, rebadged to Gradiente (brazilian brand) all the chips are Samsung branded and the mechanism is identical to that Sony one.

[@sonyajones]

Great story at the end! Great video.

[@walker55able]

I have tried to repair a vcr with identical issues as your sony. I don't blame you for not continuing but i would be intetested if you find a chip for it.

[@12voltvids]

Well it is mine now so if i find one I will certainly try it.

[@johnkosick1464]

" A Nice Piece of Junk"..... LoL. If you want to own junk, it should be Nice! Thanks for sharing your Story, I was interested in your electronics background.

[@zulumax1]

2:00 Looks like you got a Chineese fortune cookie paper strip! Lucky you

[@jeffadams5510]

LOVE the story at the end :)

[@MrWedge72]

Hello, from Hungary😀

[@redrooster1908]

That was a good story at the end.

[@renderingrocks]

Panasonic and Sony were the best in class at one time, this looks similar to gold star quality. Play and toss theory.

[@dillwiggle2]

I have this exact model vcr and when rewinding it’s bunching up the tape I opened the case and watched it. What part do I need to look at for the problem ?

[@franklinsterlen6817]

How do you remove and clean the Mode Code Sensor on this unit?

[@amatorev]

my comment is a bit irrelevant to the video, do you remember the focusing problem I had with my sony ccd vx1 camcorder that did not focus the problem was not in the lens but under the lens there is a zoom guide board and af there was an electrolytic capacitor in gray colour with a capacity of 330 uf 6.3 volts which had leaks and the board was filled with liquid, I cleaned it, changed the capacitor and the camera focuses again correctly 😊

[@BoB4jjjjs]

That was also my first jolt I got from electricity, we had a valve/tube radio and I would have a look at it. I was abut 8 to 10 years old and still at Primary School. I know the radio was at mains voltage, but the chassis was ok, right? We had a round 2 pin plug and I put it in without paying any attention to how I plugged it in. We had 240v AC (it is supposed to be 230vAC these days, but it can be above 250vAC), anyway, I had a look being careful not to touch anything inside. I found the fault, a resistor was black and had been carrying a lot of load, the capacitor beside it had almost melted and after being on a while started to drip wax. I went to show my mother, after she looked inside I reached over to turn it off after I had just turned the radio off. I was still touching the metal shaft of the volume on/off knob. My hand just touched the metal of the socket and whack!!! Luckily my hand jumped away from the socket, but I learned a lesson that day about old radios, they can be live chassis. I did repair it after we got the parts from an old guy that used to repair old radios. But I learned to wire these old radios to a three pin plug after that, making sure the live went through the volume switch and checked it did not go to the chassis after going through the switch. I learned the hard way, but you learn better to have a healthy respect for electric, especially when it is 250vAC, usually around 240vAC here. It bloody hurt and I still have a white mark where I made contact with the socket. The socket had a very thin coat of black paint on it, that thin coating may be the only thing that prevented me from a full flow of current. One thing it proved, the metal socket was earthed lol.

[@Capturing-Memories]

I have a very similar unit that I use to rewind and fast forward tapes, Pretty damn fast, reminds me of Philips turbo drive.

[@12voltvids]

I have a few that really wind up. I think rewind races were what the companies were attempting.

[@CrashPilot1000]

If I were you I would try to get into the repairing Graphics cards business. Buy broken cards for 50 and sell them working for 200. Graphics cards are currently traded like gold.

[@walker55able]

Great story about how your electronic repair world all started.

[@12voltvids]

I should have gone to work for the phone company right out of high school. Would have been retired for 3 years now. Hindsight is 20/20. I had an uncle that was with the phone company, my cousin worked at the phone company, my wife's uncle also worked there. Took me 20 years to figure that one out and go work for the phone company. We still do phones but these days it is more internet, cable tv and security systems.

[@zx8401ztv]

What a boring switchmode, it was not cooked and all but one part was fine :) I expected a shorted output or diode, i was wrong. I have a vcr that looks almost identical, JVC Hi-fi nicam S-vhs , it worked fine when i last used it, but sometimes when it was powered up extra functions appeared in the menus, possibly ntsc? That neighbour sounded like a really nice man :-D He didn't mind helping you to understand how to repair things :-D When you are not in a grumpy mood, you are great at discribing circuits and operation and fixes :-D. I'm not picking fault with you by saying "grumpy mood", everyone has those days.

[@teacfan1080]

That'll teach that damn radio for giving me a jolt!

[@KylesDigitalLab]

I just bought an SLV-780HF for $10 with the remote. After two seconds of it playing the tape, it just blanks the screen. It looks like it has some kind of tracking issue. There's color and a picture but it's not stable. Fast forward and fast rewind work with a full color picture, and pausing works fine. It only blanks the screen when playing normally, and the tape is still running though the machine when the screen is blanked. Any ideas?

[@12voltvids]

Check control track. No control track and it will mute the picture. Could be just a dirty control head.

[@KylesDigitalLab]

@@12voltvids Yup that was the problem. I cleaned the audio and control track heads with some alcohol on a q-tip and now it's good as new. I knew it was related to the control track as the VCR timecode wasn't advancing, it was always at 0:00:00. I cleaned the video heads before and it did make an improvement, but it would still blank the picture.

[@countzero1136]

Found the datasheet for the SMPS IC here; datasheetspdf.com/pdf-file/679505/SanKen/STRA6351/1 (hopefully KZbin won't delete this link - they seem to have developed a very nasty habit of doing that recently) Just in case they do, the connections are as follows; Pin 1 - Source Pin 2 & 5 - GND Pin 3 - V in Pin 4 - Feedback & Overcurrent Protection Pin 6 - Not Connected Pin 7 & 8 - Drain Just in case you ever have a quiet day when there's nothing better to do than try to wire up another IC to see if it'll do the job ;)

[@packratswhatif.3990]

Wow, Sony wasn't using the word " Quality" in these VCRS were they. These units look so cheap compared to their 80's VHS units.

[@mryamaha100]

if it ant a blood plane going over its a wedding sticky wedding tape label inside a cheap sony at least it, not the blue cog, yeh bike days coming soon thanks for the bedtime story watch them every day

[@stefanmarinescu5086]

Great bedtime story

[@redrooster1908]

102K subs. Nice.

[@simtitan1]

I've got this game VCR, and for some reason when I hit rewind, it just goes very slowly and doesn't switch up to full speed. Everything else works though.

[@12voltvids]

The slow speed on rewind could be a couple of things one it could be one of the tape sensors is not working on the supply side. we know it's a supply side because if it was the take-up side it would stop it would not play. Another thing that can cause it is some of these pre-recorded tapes we're not loaded on standard length cassettes. VCRs were designed to detect standard tape loads 30 and 60 minutes with the large hubs on the spools 90 120 130 140 160 on a small hub. Many custom lengths were available in videotape when I was ordering blanks for duplicating I would get 5 minutes 10 minute 15 20 whatever length I needed for the tape I was duplicating because why pay for blank tape. Cost wise they were much cheaper might have only been 20 cents cheaper per tape or 30 cents cheaper but when you're making hundreds of copies that adds up. The problem is these oddball lengths of tape don't calculate to the correct length on the VCR. All VCRs that have the fast rewind speed have to know where the tape is so that they can begin to slow down before the tape gets to the beginning otherwise when the tape hits the end it is going so fast that the brakes can't stop the reels and the tape snaps. So if the VCR can't figure out how long the tape is it goes into the slowest mode for rewind. Same thing happens if the optical sensor on the supply reel is not working the machine can't calculate the speed difference between the take up and supply reels so goes into the slowest protected rewind mode. If it does it with every tape that it's going to be a sensor problem but if it only does it on certain tapes check the length of the tape and look at the tape hubs if it's a short tape with small hub that's your problem.

[@joey_after_midnight]

Well worth the bedtime story.

[@12voltvids]

More to come. The 2 shops i mentioned i worked at.

[@NadeemHayek]

I intend to get a vcr player to play vintage video tapes.. I’m at the search period, any good deck recommendations?

[@12voltvids]

Get the most recent made one you can find.

[@NadeemHayek]

@@12voltvids well I can get any one any year no problem I have eBay and all online markets at my disposal.. if there’s a special deck I’ll go for it

[@12voltvids]

@@NadeemHayek I would go for a late model deck over any of the ones from the you know the earlier years. Some people will say well get the '80s decks they're built better and that's only partially true because 86 might have been built better but they also have lots of hours on them and they're mostly worn out and parts are not available. You're much better luck with a late model even if it's a funai because chances are it has relatively few hours of use and with VCRs it's the hours that count the video heads are only good for so many hours and they wear out. Doesn't matter if you've rebuilt the power supply or change capacitors if the heads are shot the units trash. Late model machines might be much later duty and won't take the abuse that the older ones would handle no problem so don't abuse it treat them gently treat them like they're made out of China and they will last. All the machines I use for archiving are all from the last generation of VCRs and they're all working perfect I go haul out old machines from the 80s and 90s and every time I turn them on I have to do something to get them working again. If you're looking for a super VHS machine any of the late model jvcs are good Sony SLV r5 and slvr 1000 are good despite the blue gear problem other than that they're reliable I would stay away from any of the AG Panasonic industrial machines as these ones have far more problems.

[@NadeemHayek]

@@12voltvids Great tips thanks I’ll check around the machines you mentioned

[@mjl4423474]

A cheap but not so cheerful unit it seems. Reminds me of consumer laptops built from around that period and onwards. Heaps of plastic

[@cjpwolf2436]

I have a Sony SLV-N750.

[@annierenard5954]

nice story

[@sirdanielwatlingsmbe5625]

I have a model similar to this it’s a slv se 740

[@oliverlison]

I don't like when you poke the finger in there while explaining and the power is still on.

[@12voltvids]

Why, it's not like you can get a shock. Got to have the power in to make measurements.

[@Craig_Spurlock]

That looks like the same piece of crap mechanism that is in the SLV-380P. The "Worm Wheel" in the loader is a weak, flimsy, spoked P.O.S and the person who designed it that way should be strung up by their nethers!

[@NunYa953]

That is a Samsung build mechanism and machine and it's garbage.

[@ford1546]

Yhere is nothing else to expect from a cheaply made VCR player. If you buy CHEAP, they will be destroyed faster! they do not last very long