TH-42PZ700
PCB Designation: P Board
Part #: ETX2MM681MFS
Symptom: No power, relay does not click & power LED is off.
Troubleshooting:
1. Check main fuses:
F601 & F602
5. Replace MC701
Part #: MLZDE103
2. Check if 5V
present @ cathode
of D551
3. Check/replace IP701, if open
Part #: ERBSE0R75U
