Hi,

I have a 50" samsung plamsa PS50B451B2W tv I am trying to fix. It failed one day an does not turn on with a clicking power supply.

I took it the back of and narrowed it down to the X-main board. If I disconnect the X main board it power on and tries to show a picture I can see the no signal message box. So I looked and the x-main, was shorted (very low resistance) between Vs and ground (failed transistors as I remove the capacitors and they are fine) thought great, and bought an another X-main board, and replaced it.

The replacement board seemed...

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From Somerset in the UK, I have a plasma TV I am trying to save from the tip and hope I can get some help here. It is a PS50B451B2WXXU.