Question about RCA 36V430T 36" TV

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Tv shut down and I found the HOT to be shorted.

Installed replacement transistor and nothing. There are no ps voltages with the exception of 163vdc on the gate of the mosfet. I have checked for solder joint problems and all electrolytic caps check out ok. There are no shorted diodes in the circuit and no visible damage such as arching etc. I am working without a schematic so any help is greatly appreciated.

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  • psbrennan Jan 10, 2009

    Thanks 'Tech 1819'

    I ordered a flyback today and hopefully we will see the light in a couple of days-

  • psbrennan Jan 23, 2009

    Well, I installed the replacement Flyback and the power LED lit for a couple of seconds and then the HOT started buzzing. It has shorted again. Anything else I should look for before putting in another transistor?

  • psbrennan Jan 25, 2009

    The Transistor is definatly shorted across all three legs. I have not found anything else that is shorted or terribly out of tolerance. I took the HOT out of circuit and the power supply is running ok. Any other thoughts?

    Thanks--

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This set is famous for defective flybacks. part number is 262342. replace the flyback

Posted on Jan 09, 2009

  • Chuck Jan 10, 2009

    cool, keep me posted..

  • Chuck Jan 24, 2009

    remove the HOT and check the resistance between the base, collector and emitter. Do this with the transistor out of circuit.

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