JVC TH-G40C Service Manual page 23

5.4 AMP Protection
"PROTECTION" appears on the FLD.
After unplug power cord, connect again.
"PROTECTION"
appears continuously on the FLD.
Is the IC101 pin54
"LOW" signal(0V)?
Is the Q703, Q704 and Q705 normal?
Replace TI AMP IC(IC701, IC702, IC703, IC704)
YES
YES
Power on.
YES
YES
YES
YES
NO
NO
Replace IC101.
NO
Replace the Q703, Q704 and Q705.
OK.
(No.MB672<Rev.002>)1-23