Hello. I've come across this Plasma TV with no power symptom. There is nothing even relay cliks or signal lamps. I've checked power input thru two mains fuses and further to output Gretz power recertifier and it comes ok over 400V. Further there are some SMD elements where I stop looking. Over the internet is mentioned, that Q406 n-channel power MOSFET usualy gets broken. When I desolder it and try a multimeter diode check, I can't get any response from it. I've bought equvivalent IRFP460 (20A/500V) MOSFET only to discover, that diode test isn't relaible test for this component, because MOSFET was to powerful to be charged with my multimeter. Does anybody come across this failure.
Topic: Panasonic TH-42PX60U with broken Power Board TNPA3911 (Read 3853 times)