i have a toshiba 50l1350u that wouldnt power on regularly without unplugging it and repetitively trying over and over.. when it powers on its good till it shuts off. i updated the firmware and didnt have a problem with it for a few months.. then it started happening more and more.. i bought the PK101W0100I Power Supply Board Unit to fix this and it is doing the same thing.. all that ive read is the power regulator is shot or one of the fuses is shot but the power board was supposed to replace all that.. unless i bought a bad board im at a loss.. is there anything on the main board that can be...

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thanks for this forum guys.. tv problems are driving me insane!!