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(SOLVED)Samsung 32" LCD Backlight switches off after 2 seconds

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rythmman:
I replaced the electrolytic caps on the power supply/inverter board, but still get DOUBLE voltage outs ie 10.6vac instead of 5.3vac and 26vac instead of 13vac. Which other faulty components may be causing this?

downunder:
Can't read the board number, and the voltage legend at top left of picture hard to read, but these voltages are not AC voltages, they're DC, so set your meter to the DC range and try again.

And see what DC voltage appears on the pin designated "BLU-ON'. Expect around 2.5V, supplied by the Main board to turn the backlights on.

Bruce

rythmman:
Hi, Board number bn44-00369a . The blu-on voltage is 5dcv - double spec, as all the others??
Which component is making ALL voltages double the spec voltage??

Turnip:
Wonder if you're reading DC voltages from somewhere other than set chassis, say -ve pin of Bridge rectifier as might to check non-isolated voltages ?

Notice BN44-00369A shematic available free on ElektroTanya - Best of luck - Chris.

rythmman:
Reading -ve DC voltage from chassis screw. Yes, I have the schematic , but still wanted advice on my original question.

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