Question about Sony KV-35S42 35" TV

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TV won't power up after surge

I have a 2000 sony trinitron KV-35S42 that hasn't worked since a power surge. The continuous blinking lights indicate something about Jungle IC 301, and was told on a previous post here that it needed a new board. I have some soldering experience with circuit boards, but not actual TV repair experience. I would love to try to tackle this repair, because the TV is so darn big, and to have someone come to the house could invest that money in a new set. Please help.

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Re: TV won't power up after surge

Try this: unplug the set and wait about 10 or 20 minutes. This is to make sure that the main power supply filter caps completely discharge. Look on the power supply board, close to where the AC cord attaches to the board. Look for a white resistor labeled "0.1 OHM" (the symbol for OHM, like an upside-down U) and measure it with your ohm meter. If it is open then your switching transistors in the main power supply are most certainly shorted. Older sets had 2 separate transistors on little heat sinks labeled "C4834", then they switched to 2 transistors in one package labeled "MX0841" or "MX0842", and then some sets went to two separate MOSFET transistors. Measure those parts and post your results and we will guide you from there.

Posted on Aug 09, 2007

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Few examples are given below; some of the issues may be resolved without the need for service.
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4 blinks: - This indicates that there may be a back light or lamp power problem.
6 blinks: - This indicates that there is some kind of audio problem with your set.
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8 blinks: - This indicates that there may be a video-related problem with your set. If the flash sequence is not listed above or the light continues to flash, follow the steps below to perform a power reset:
Try the following steps to check if the issue can be resolved.
Turn off the television.
Unplug the television power cord from the electrical outlet.
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Plug the power cord back into the electrical outlet.

If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.

If the issue continues to occur, service may be required.

Thanks for using Fixya.

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