LG CJ65 - Power Amp Part Check

3-23
ELECTRICAL TROUBLESHOOTING GUIDE
6. POWER AMP PART CHECK
YES
YES
YES
YES
YES
YES
YES
POWER AMP PART CHECK
OK
Refer to SMPS troubleshooting.
Check each line resistor output voltage.
Replace the coil.
Check IC701, IC702
Pin29, 30, 31, 36, 37, 38 input voltage.
Check PWM Modulator input
IC701 Pin14, 15 / IC702 Pin5, 6. 14, 15.
Check IC701, IC702
Pin27, 28, 32, 35, 39, 40.
NO
NO
NO
Check
CN102 Pin13, 14: +12 VA
Pin5, 6, 7 : 36 V.
Check IC701, IC702
Pin2: +12 V input.
Check output line coil.