Can anyone help with this repair? Thanks :)

From: ljones (ljones_at_lineone.net)
Date: 10/09/04 

Date: Sat, 9 Oct 2004 19:37:09 +0000 (UTC)

Hi,

I have an old (I believe it was made around 1990/91ish) VCR. It's an
SVHS model - a Sanyo VHR-S700E (Stereo, PAL; I'm in the UK). I'm trying
to repair this vcr but I can't pinpoint exactly what the trouble is or
where I should look.

These are the problems:

* The VU LEDs don't light up at all ( they should light up to show the
volume levels; so far I've never seen them light up at all).

* The tape refuses to rewind, forward wind or play - the video tries to
but aborts the attempt.

There is another problem which I will come to in a moment.

First of all I thought that the second problem (regarding forward wind,
etc) might have been the capstan and that it might have ceased up or
needed oiling. I tried to do this with some sweing machine oil but it
seems to have had no effect (though I did this with the capstan still in
the machine).

However the LED problem points to (I'm guessing) a possible power
supply. Here is a picture of the inside of the VCR with the cable (I'm
guessing) carries the power for the LEDs; there's a ribbon cable that
connects nearby I guess this carries the signals to light up which LEDs
need to be lit;

http://img21.exs.cx/img21/9621/11142.jpg

You can see another picture of the power supply section here - note the
power supply is hard to get to and most of it inside a metal can:

http://img21.exs.cx/img21/9408/11143.jpg

There is a third problem though. I've noticed while I've had the video
apart that any usage of the tape (eg trying to wind forward, back, etc)
I have found one chip near the bottom of the capstan (on the underside
of the video) seems to get very hot very quicky. Here's a picture:

http://img21.exs.cx/img21/7159/3a4.jpg

I'm guessing the big wheel in that picture with the belt on it is the
underside of the capstan.

Incidentally, here are some pictures of the capstan:
http://img21.exs.cx/img21/8303/11144.jpg
http://img4.exs.cx/img4/1299/13031.jpg

And the left hand side of the VCR with the non-functioning VU meters:
http://img4.exs.cx/img4/7922/13032.jpg

Can anyone figure out what the problem is exactly? Are all these faults
seperate or interlinked in some way? I'm guessing this might all be down
to a power supply problem but where do I start looking? Does the fact
the chip gets hot mean it is dead or just being fed bad voltages?

:)

Thanks for any help.

ljones
ljones@lineone.net

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