TH-42PD60
PCB Designation: P Board
Part #: TXN/P1ZQTUS
Symptom: Dead/power LED off (no blinking code).
Cause: No primary AC voltage inputs due to open fuses caused by Q406 shorting out.
Remedy: Replace F401, F402, Q406 & check/replace thermal resistor (R410) on the P board.
Note: In some cases, R410 is open.
