Section 2. Electrical Part; Troubleshooting Guide - LG HT953TV Service Manual

SECTION 2. ELECTRICAL PART

❏ TROUBLESHOOTING GUIDE
1. Power Supply Circuit
Insert power cord.
Is the Digitron on correctly?
Turn power on.
Is power on?
Does initial read work?
Does it play?
Does it output
audio?
OK
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Only for training and service purposes
YES
YES
YES
YES
YES
YES
YES
NO
Check power plug and power
NO
Check power supply circuit.
NO
Check laser circuit.
Check focus circuit.
NO
Check tracking servo circuit.
NO
Check audio circuit.
2-1
supply circuit.
Check disc.
LGE Internal Use Only