Question about Sony SLV-N750 VHS/S-VHS playback VCR

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Poor playback Pre-recorded tape playback picture is wavy/jittery. Tracking adjustment does not fix it. Have cleaned heads with a wet cleaner. Sometimes looks like TV vertical hold is out of whack but is not. Cable TV goes through VCR but no problems with that picture. The really wierd thing is when I have a blue screen on the TV for the VCR mode, the blue screen is also showing a wavy section when the tape is not playing.

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Re: Poor playback

Because the cable signal is OK, this eliminates the tuner as your problem and leaves the power supply which is a common problem. It is a switch mode type which often have trouble maintaining control of its output voltages and produce trouble downstream in the video circuitry. Either the power supply is failing which can be wholesale replaced for about a $150, or something somewhere else is failing and loading down the supply causing it to overwork. Usually in this case, you can hear a whine noise if you listen close.

Posted on Dec 28, 2007

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The picture on my vcr keeps going off or shows wavy lines when words come on screen why is this please?

Poor tracking possibly caused by a dirty video heads. I would use a head cleaning tape. Then adjust the tracking controls for best picture.

Mar 21, 2015 | Orion VCRs

3 Answers

Picture rolls on playback

Try cleaning the heads, but it seems like the heads may be faulty, you might need to replace the vcr, they don't cost much these days, the repair might cost more than a new vcr these days.

heres a cheap headcleaner, look for one at local shops, wallmart bestbuy and so on

Sep 24, 2008 | Panasonic PV-V4021 S-VHS VCR

1 Answer

Playback problem EP

Do you have a tracking control on the
vcr if you do it should be centered during
record It can be adjusted during playback
to clear up the picture adjust it for the best

If you dont have a tracking control on the
vcr then it may require a mechanical adjustment
of the backtension or guidepost which requires
special tools to perform

Nov 18, 2007 | JVC HR-A592U S-VHS VCR

2 Answers

The tape only plays back in black and white.

normally this would be a tracking error, if you can manually adjust the tracking, this should fix the prob...if there is no way to manually adj the tracking, use a video head cleaner to see if cleaning the heads will help the auto track to function better.


Feb 09, 2009 | Toshiba M752 VCR

1 Answer

Very snowy picture when recording or watching video tape

If there is snow from the VCR only when the tape is being played, it is possible that there is a head clog or dirt on the heads.

If the head is clean and there is still snow from it, this means that most likely it is faulty.

A service tech who is experienced at servicing VCR's can connect a scope to the pre-amp test points, and run his calibration tape. With this he should be able to look at the signal carrier envelops on the scope and see if there are any faults.

At the same time, he will also see if there is a fault with the head pre-amp area. I've rarely seen any faults in the pre-amp area.

An experienced tech who works on VCR's can change the head for you. This is time consuming because he will have to go through all the guide and tracking alignments with the scope and test tapes.

A problem with most VCR models, unless it is a high end industrial model, most manufactures are no longer supplying replacement parts. They are telling the people to buy a new machine.

In reality, it may not be cost effective to service your VCR. You may end up buying a new one.

Jerry G.

Jun 13, 2008 | Panasonic PV-V4022 VHS VCR

1 Answer

Flicker on playback

Could be tracking, dirty / faulty heads, or mis-alligned guide rollers.

First,adjust the tracking on the player during playback. This is done by pressing P+ or P- on the remote control.

If this doesn't work, use a video head cleaner. This consists of a video cassette and fluid. Follow the instructions with the cleaner.

If this still doesn't help, and you are confident in opening up the VR550, you could cleaner the heads manually.

Disconnect from the mains.

Remove the screws from the back and sides of the VCR.
Gently ease the lid off the machine.
Locate the large silver coloured head drum towards the back of the machine. There are four small receptors around the side of the drum. These are the video heads.
Take a small piece of clean white paper about 1.5 inches square. (Copier paper)
Hold the paper square over 1 finger and rub each head in turn. Keep the head near the centre of the paper so as not to catch the heads with the edges of the paper.
Check the paper for dirt from the heads.
Reconnect the player and try a tape. If the problem is still there, try cleaning again.

If none of this works, insert a tape NOT recorded on this machine (Mis-alligned rollers affect recording as well as playback) and play. Locate the rollers which guide the tape around the mechanism. Particulary either side of the head drum.

The rollers have adjustments on the top, which can be turned to move the guide up and down slightly. This is a fiddly job, and over adjustment could cause the tape edge to be damaged.
Adjust the rollers to get a clear picture. It is mainly trial and error.

If all fails then the video is probably destined for the skip.

If you need a replacement, , will sell you a VR550 at a very good price.

Apr 09, 2008 | Philips VR550 VHS VCR

1 Answer

Poor EP playback

hi sir
the speed in EP is differ from sp ,EP it is much slow then all quality would be less cause you are using less magnetic particles on the tape so here are many reasons for bad recording
first may be you have to clean video heads
or ,you have to clean the path of the tape in the recorder there are some metal guides that turnes with the tape to get it rounds the heads they may be dirty
or clean the capstain pinch roller and its metal roller that makes it run ( the capstain roller )
or you should have new heasd drum sir

Nov 18, 2007 | JVC HR-A592U S-VHS VCR

1 Answer

No picture

This type of problem may be caused by a dirty video head, people some time try to adjust tracking to take care of this problem this is a mistake. Now to clear up this issue first you put the tracking control mid way in its setting, then you clean the heads of the VCR you can use a head cleaning tape (follow the instructions on the cleaning tape box)for this or if you have experience you use a chamois swab type cleaner (follow the instructions on the package of swabs and liquid cleaner). one the heads are cleaned you acn then try to adjust track to obtain the best picture. If you can not you may have video head problems or a problem in the drum motor (servo) mechanism. In which case I advise taking the unit to a TV repair shop.

Sep 13, 2007 | RCA VR552 VHS VCR

3 Answers

Playback is poor quality, tracking wont fix it and have cleaned head

Dear Iain, Do you route your Cable / Antenna through your VCR's Inputs (at rear) ? If yes, Do you find that the video of these cable /antenna channels is good? If the answer is yes again,then, in all likelihood, you are having a machine with dirty Video Heads.Did you use a 'Wet' Type Head cleaning cassette? If no, then I suggest you get one and use it. Again it is entirely possible that the Video Heads are worn out. How old is the VCR? How many tapes have you played back on it? Do you observe some black streaking along the edges of the images on the screen, which increase or decrease when u change the tracking? If yes, then it is time to get the Video Heads replaced.In India they would cost an equivalent of US$ 10-15. I do not know how much they would cost in your country, but it cannot be much more.

Jul 28, 2006 | Panasonic AG-DS555 S-VHS VCR

2 Answers

Picture is jittery and voice is garbled with noise in background

I had the same problem recently with a Panasonic PV - V4521 which has worked for years for me. I tried everything including cleaning the heads with Q-Tips and pure alcohol. Nothing improved. I tried tape head cleaners. Nothing. So finally one day, as I was unscrewing the cables, this VCR fell down onto the bottom of my foot and drew blood. Now remember, I had been trying to fix this thing for at least 10 days.
So, I dragged it up and pounded the top of the VCR until the top caved in. Then, I opened my front door and tossed it so hard against the floor of my patio that pieces went flying everywhere. I gathered up the pieces and the twisted VCR, put it in a box, and tosses it real hard into the dumpster. It's fixed. I have no more problem with it.

Jun 27, 2006 | Panasonic PV-V4021 S-VHS VCR

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