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Sony VCR plays/recordes in EP mode but not in SP mode - need schematic

I have a Sony VCR SLV-373UC. The play/record in EP mode is OK.
The play/record in SP mode has no video and the audio is OK.
This SP play/rec mode problem seems to have occurred slowly over a period of time - the picture went from good to grainy then to a very grainy-tearing video then to a broken-up blank video and the audio remains good.
If I manually adjust the tracking control all the way to one side I get a very week grainy off-color picture from top to bottom.
Tapes recorded in SP mode on another VCR's will not play in this Sony VCR. EP is always OK.
Tapes I recorded in SP on this Sony plays in other machines and the video looks good but the video "rolls" and jumps which can't be adjusted.
This is a 4-head VCR, on the drum head it says EP1, EP2, SP1 and SP2.
Is this a video head problem or a tracking circuitry problem?
Can one of the SP heads be bad and is there a easy way to test the SP heads?
I have cleaned the heads with chamios and TF solvent and it's not a dirty head problem.
I need the schematic for this VCR and other suggestions what to check for.
I am a prototype technician and have basic equipment didital scope, meters, freq counter.
Thanks for your help.

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Re: Sony VCR plays/recordes in EP mode but not in SP mode...

Sounds like it needs a good cleaning, you will notice this problem in sp first when needs cleaned. however if you had done this I would go over it again and if not then change the video head

Posted on Nov 22, 2007

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1 Answer

Video on my Sony VCR (SLV-780HF) goes gray after playing a tape a few seconds. What could be the problem?

The only real cure will be to clean the video head. If that doesn't work then I'm afraid that whatever recorded you EP mode tape was not set up well tracking wise. So other machines struggle to track the tape. Some VCR's will only playback SP or LP tapes and don't have EP mode. In which case you should check to see if these VCR's can play the EP tape and if they can't find one that can.

Dec 06, 2012 | Sony VCRs

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

1 Answer

SONY keeps switching to EP at beginning of playing SP tapes

You may have dirty heads in the vcr---most 4 head machines use two for sp and the other two for lp and or ep.

Tape residue will usually be seen on the drum where the heads are when this happens--also look for the black residue on the tape guides that hold the tape in position against the drum-------

Apr 27, 2012 | Sony VCRs

1 Answer

I am trying to record a program in EP mode but when it records it returns back to SP mode. How can I set the tape for EP without it returning to SP?

Most VCR's have a default recording setting for recording speed or other settings. It's just a question of finding the right menu. Have a good look around the menus. However the VCR might default to SP after recording in EP, however the playback should switch to EP when playing.

Jun 09, 2010 | VCRs

1 Answer

Sony - SLV-685HF -vcr using universal remote one for all 3021 can't change recording from sp to ep so I can record more on tape. vcr says auto, or 180 in speed setting always records sp. I just want to pop...

I solved it myself by selecting guide on the remote, then the tv screen said enter plus code. ijust type in all 0's for each space given (0000000) then the setting instantly changrd to EP from SP. I pushed set on the universal remote , that was it.
It was necessary to use the power button to turn vcr off like tthe TV screen said because I was just setting the timer. You can just go to menu or whatever next.
I didn't appreciate FixYa trying to sell me a membership before even
attempting to offer a solution. They could have at least faked trying to find a solution. Instant response we would like to offer our premium services ....

Jan 18, 2010 | Sony VCRs

1 Answer

VCR LP/EP compatibility

Vdumitre -

No, not usually. If you've recorded a tape at LP and put it another machine that doesn't have LP, it usually won't play properly. Some machines that have only SP/EP will do this, but they are got scarce as more manufacturers dropped the LP speed. Your best bet is to buy an older one from a thrift shop or a garage sale, making sure that it will play LP. Then, copy your older LP tapes to SP or EP (Run the OUT from the LP unit to the IN on the SP/EP unit, and choose "record from line in", "aux", or "rear input").



Aug 05, 2009 | Sony VCRs

1 Answer

Panasonic Super Drive video recorder

there are three creases in the head , have you made sure those are cleard?

Oct 21, 2008 | Zenith VCS442 VHS VCR

1 Answer

Changing from sp to ep

it will automatically play at the speed the tape was recorded at. but if you want to change record speeds here's how: you should be able to access menu functions from the front of the vcr, if so, put a tape to be recorded into the unit and then set the timer for a couple of minutes.while you are on the timer menu it will ask you for recording speed. set the timer record speed to ep and let it record for two minutes and let it record for the full time untill it stops recording. the record speed will automatically change settings to whatever you used last on timer record.

May 01, 2008 | Sharp VC-A560U VHS VCR

2 Answers

I have a Sony SLV-EZ717

It sounds like the taped program was recorded on a different speed. The other VCR that you are playing the taped program may not have the speed needed to play it correctly.
Next time when you record a program try to make sure you use a speed that will be compatible on both VCRs.
For example a tape that last 120 minutes, using the different speeds will give the following recording times.
SP means "Standard Play" >>>> 2 hours
LP means " Long Play" >>>>> 4 hours
ELP means " Extra Long Play" 8 hours

Older VCRs have all the 3 speeds but newer ones only have SP and ELP.
Hope this helps.

Jan 25, 2008 | Sony SLV-N750 VHS/S-VHS playback 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

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