TH-42PZ700
TH-42PZ77
PCB Designation: SC Board
Part #: TXNSC1HJTU (TH42PZ700U) & TXNSC1NZTU (TH42PZ77/PZ700UA)
Symptom: Shuts down and power LED blink 7 times
Cause: 1 or 2 of FETs short out due to improper application of vertical sync pulse during scan drive period.
Troubleshooting: Check for shorted FET (Q6441 to Q6446, Q6648, Q6649 & Q6651 to Q6654). Usually 1 or
2 FETs are shorted.
