Author Topic: Defective Samsung LJ92-01200A Y Sustain Board  (Read 29424 times)

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electech

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Defective Samsung LJ92-01200A Y Sustain Board
« on: December 10, 2009,15:27:38 »
I am repairing a defective Y sustain board (Samsung LJ92-01200A) from a Philips 42" (model 42PF7220A) plasma TV.  The Y sustain board has a shorted diode (reference designator D5018) which is shorted.  The diode is is a SMD marked F4 followed by 5D (probably date code).  I need help in identifying the part. Can anyone help??

Also I suspect the upper Y buffer board may have a problem or needs to be checked. The shorted diode provides power to the upper Y buffer.  Does anyone have a technique for testing the Y buffer board??
I have located a source (datasheet and spares) for the Y buffer.   :dubbio:

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