Question about Sony KV-27V42 27" TV

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Sony shuts off after being turned on, stand by/timer light blinks

Hi, Sony KV-27V42 When I turn on my TV,it will shut right back off again and there is a red LED light blinking on the front that says Stand by/timer next to the light.

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  • padfoot7 Feb 18, 2009

    blinks 4 times

  • padfoot7 Feb 18, 2009

    I can solder but where am i going to find the vert.IC? Inside or out on the back pannel? thanks

  • padfoot7 Feb 24, 2009

    Finally got it all cleaned out. I tried to solder it but the solder gun I have, for some reason, will not melt the metal. Should I add more? If so what kind of solder would be most likely used on there.

    Thanks for your help, time, and patience!

  • padfoot7 Feb 24, 2009

    oh yeah, i forgot the part to tell you, the board is marked IC1701, this is it right? Thanks again.

  • Yvonne Foster Apr 10, 2009

    my standby light blinks thirteen times and stops then starts the cycle again.



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The blinking should be in a pattern of a count, pause, count. That is an indication of the problem circuit. Can you post that count please? That info will allow me to give you possible defective parts and costs for the repair.


Posted on Feb 18, 2009

  • ABRsvcs Feb 18, 2009

    4 Blinks usually indicates no vertical. If you can solder you should be able to resolve this yourself. Locate the vertical IC which will be a small flat IC attached to a heatsink with about 9 pins or so. It will be marked LA7837 or something similar. Try resoldering the pins on the IC first. If that fails to resolve the problem, replace the IC. Report the results here. There may be a few other parts that need to be replaced, but the symptoms will change.

    Keep me posted.


  • ABRsvcs Feb 19, 2009

    Sorry about the late response, I'm just getting caught up now. Yes the vertical IC is inside the back. Look for a small metal heatsink. The part will be marked TDA8172 and on the board willl be marked IC541.




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