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Equipment Repairs => PLASMA TV forum => Topic started by: JAYROD on May 19, 2009,17:26:41

Title: SAMSUNG PS42Q7HD PLASMA TV NO PIC
Post by: JAYROD on May 19, 2009,17:26:41

IS ANYBODY ABLE T O HELP WITH THIS FAULT. TV POWERS UP BUT NO PIC DUE TO 197V VS SUPPLY MISSING FROM PSU. ALL OTHER SUPPLIES OK. VS SUPPLY IS NOT BEING TURNED ON BY MICRO CONT BOARD, BUT CAN BE TURNED ON IF QU803 BRIDGED C TO E.

Title: Re: SAMSUNG PS42Q7HD PLASMA TV NO PIC
Post by: mulja on May 20, 2009,10:57:58

Try disconected bottom drive board
if you will get 190v then drive board faulty
it is typical fault on Samsungs

 :brinda:

Title: Re: SAMSUNG PS42Q7HD PLASMA TV NO PIC
Post by: JAYROD on May 21, 2009,18:26:52

THANKS FOR ADVISE MULJA BUT THIS CHASSIS USES ONE LONG SINGLE DRIVE BOARD. HAVE TRIED SET WITH IT DISCONECTED ANYWAY, JUST IN CASE , BUT STILL NO VS SUPPLY FROM PSU. SUPPLY DOES NOT EVEN TRY TO COME UP AND THEN TRIP OFF, AS I WOULD EXPECT IT TO DO IF A FAULT WAS BEING DETECTED ON SUPPLY RAIL. I SUSPECT MICRO CONTROL COULD BE FAULTY.

             THANKS.