Question about Sanyo DP42746 42 in. Plasma Television
When I turn the power on I hear the relay kick in but there is no video or audio. I took the back off and the LED blinks 12 times when I turn the power on. Does this mean that the 12V supply is gone?
To test all y sub boards remove the main power connection to the y main and turn the tv on if it powers on one of those boards are bad.. remove both sub boards. and plug in the y main. if it powers on then that board is good either, put your multimeter on 2k omh and test the upper ysub boards black connector, the top 2 pins with negative to the 5th pin positive. you should read 500-1k ohm if its way under 100 there is a short.
the bottom ysub board place the multimeters black probe on the bottom 2 pins of the black power conection and the red on the 4th pin.. results are the same.
low resistance means theres a short in the board.
Posted on Oct 23, 2011
I am having the same issue, did anyone find a fix for this problem? Flashes 12 times and then clicks off and LED flashes 12 times and repeats the cycle.
Posted on May 17, 2008
This can be a power supply failure, or a short on one of the boards. The flashing LED is indicating that the set is in "protect mode".
Posted on Apr 12, 2008
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Posted on Jan 02, 2017
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