Question about Sony KV-32S45 32" TV

2 Answers

KV-32S45 Disappearing Picture, Good Sound

My Sony KV-32S45 has worked great for years, no problems. Just a few days ago, the picture started disappearing. The TV turns on fine (red light flashes for a few seconds before picture appears), and will work great for about 5 minutes. Then the picture gets compressed to the upper third of the screen, in kind of a trapezoid shape. The picture is full width at the top, and only a few inches less than the screen width at the bottom of the picture. The picture wavers quite a bit during this time. This usually lasts for 2-5 seconds, and then the screen goes blank (no flashing red light though). The sound is working fine the whole time. I've read through solutions to similar problems, but this one seems unique enough that I'm not sure of the solution. I do have a service manual that I found free on the web, with instructions on how to safely open up the chassis and replace parts. I am also comfortable enough with a voltmeter and soldering iron that I feel I can do some minor repairs. I'm just not sure where to start. Anyone have any ideas? Is this something that can be fixed with adjustments or do I need to order replacement parts? Also, if this is fixable with replacement parts, can anyone suggest a good place to order from?

Posted by Bruce James on

  • Bruce James Apr 20, 2007

    Thanks tony91, you are the second person to tell me this. Just in case someone else needs this information in the future, on my schematics, it is actually a 7-pin IC: TDA8172. It is marked as V-OUT, Ref # IC561 for this model, the Sony Part Number is 8-759-980-58. I was able to find the part in stock at Tritronics for $15.36.

  • Bruce James May 31, 2007

    Finally got around to working on the TV last weekend, I replaced the IC, as well as 2 capacitors and a resistor:

    REF NO PART NO DESCR REMARK
    ------ ------------ ----- -------------------
    C561 1-126-967-11 ELECT 47MF 20% 50V ($2.14)
    C565 1-126-969-11 ELECT 220MF 20% 50V ($4.57)
    R565 1-215-890-11 METAL 470 5% 2W ($1.07)

    I was able to purchase these parts through Sony:https://servicesplus.us.sony.biz/sony-pa...

    TV is working great now!

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2 Answers

Anonymous

Lightly tap circuit board using any non conductive thing like plastic ruler or wooden stick. If picture apears then look for bad or cold solders. Resolder all Vert. IC pins.

Posted on Oct 07, 2007

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  • 81 Answers

Yes you have a bad vertical ic . i,ve seen bad conections on this ic too, it may not need to be replace its a ic that stands up 6 pins the numbeer on it starts with TDA

Posted on Apr 20, 2007

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