Question about Sony KV-35S42 35" TV

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Sony KV-35S42 35" TV

When turned on, 4-5 colored lines appear across the top of the screen. Within seconds, a scrunched image appears at the top, or the entire picture appears. Then the screen turns black, within seconds. Once the picture goes, it does not reappear while still turned on. When turned off and back on, the cycle repeats. Sound is OK. Connections are good.

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  • melpom Feb 15, 2009

    HAPPENED TO US TOO! Apparently it IS what happens with the Sony 35", this is the ONLY one they every made, and they have all apparently gone in the past 18mos! So sad, $1500+ down the drain for a TV to last barely 8yrs? Pathetic. We have to bang on the thing to get the pic to stabilize and this is now after waiting about 2 DAYS for it to warm up. Needless, we finally went shopping today. Target sale, lol! $335 for a brand new 32" plasma, baby! About the same as the MIN repair on this hunk of 2003#'s of JUNK! Never again, Sony! NEVER!

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Check first for bad solder on the vertical IC, Im not sure for your set as I do not have the service manual, but it may be location IC301. If after resoldering it does not fix it you may have to replace it and you should replace the electrolytic capacitors in the vertical section. Hope this helps. Don

Posted on Aug 14, 2007

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1 Answer

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If you know how to solder & can find the vertical output chip then you could try resoldering the pins. If this doesn't fix it then it needs new parts.

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Usually that symptom is caused by cracked solder joints on the vertical output IC. As the IC starts heating up, the picture starts breaking up at the top with several "dancing" dark lines appearing, the top scrunches down and then when the vertical quits altogether, the screen goes completely black. A good slap on the side of the TV might make it happen faster or clear it up temporarily. If you have experience working on PC boards then you can resolder the pins of the vertical output IC but if you have never soldered parts on PC boards then allow a qualified tech to handle it for you.

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1 Answer

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Is good that you hit it and it reacts,very likely you have loose conections in different places but for the distorted picture you need to check the horizontal driver transformer and flyback after that is corrected you need to check the complete chassis for loose conections.Take your time.Good luck.

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