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Dean Batute
 
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Default Sony KV-32S22 Keeps blowing its power supply(update)

Hello and thanks to all for the suggestions. Here's how it stands right
now....

I replaced the blown components on the power supply board, resoldered
all the associated points, replaced the Horizontal Output Transistor, and
resoldered all the points in the Horizontal circuit (including the
Horizontal
drive transformer, etc.

Partial success!!! At first it worked fine for about half an hour or so (I
turned it on and off a few times while replacing the back, reconnecting his
cable/vcr, and testing a universal remote.

Now...it turns on for less than a minute before shutting off. The Power
standby LED flashes non stop till I hit power again, at which time it stops
flashing and completely shuts down. At this point I can turn the power on
again (for all of a minute) before it shuts down...etc. etc.

At least it's not blowing components any more. That's a good thing.
Question is...

Now What ??? There's nothing more frustrating that driving blind. I fix
vintage synthesizers for a living and schematics are readily available for
just
about all of them. Not having access to any Sony schematics is frustrating
and I'm not prepared to pay $40-60.U.S. for a photocopy !

Any FURTHER thoughts on this will again be greatly appreciated. Sadly my
dad
was all excited.......for all of half an hour.

Cheers....Dean.



----- Original Message -----
From: "Dean Batute"
Newsgroups: sci.electronics.repair
Sent: Thursday, July 17, 2003 12:06 PM
Subject: Sony KV-32S22 Keeps blowing its power supply


HelloAll,
any help anyone can give me will be GREATLY appreciated. My

dad's
Sony TV Model
KV-32S22 keeps blowing its power supply. In one fell swoop I replaced the
Horizontal output transistor,
the blown transistors, resistors and diodes in the power supply and sure
enough it worked...for one day.
Then it blew again

It uses a Type G power supply. I've searched the net for schematics or

any
tips with no luck.

Thank you in advance for any help you might be able to provide.

Sincerely....Dean.