Question about Sony Bravia KDL-42V4100 42 in. LCD TV

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Sony bravia kdl-42v4100 no picture no sound if i disconnect cable running from controller board to main tuner board i get sound but no picture and if i plug it back in you see a picture for a second then the power light goes out and the red standby light blinks two times over and over

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Hi,

Sounds like there is a short on the power board or the power board has gone faulty.

Look on the power board to see if any of the capacitors are bulged or if there are any other components burnt out. The TV is going into protect mode because of an over current, which points to a short on the board or a component has gone short circuit.
Thanks

Posted on Oct 01, 2009

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KDL42V4100 NO picture but there is sound. I have my surround sound hooked to the TV therefore I can hear the TV. Can you help me with this?
thanks

Posted on Jan 22, 2010

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main board fault. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box.
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I have encountered this before---there are set top boxes that will convert the NTSC to PAL and the only other concern is the line voltage being the same or not.

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To be absolutely sure, the voltages need to be checked on the power supply. If they are not the values listed in the service manual, then you should replace the power supply instead (accounts for the other 5% of the time).

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Hi,

There are a number reasons why this might happen:
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Thanks

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