LG HT552TH - Speaker and HDMI Setup

2-1
SECTION 2. AUDIO PART
AUDIO TROUBLESHOOTING GUIDE
1. POWER SUPPLY CIRCUIT
Insert power cord
YES
YES
YES
YES
YES
YES
YES
Turn power on.
NO
Check power plug and power supply circuit.
NO
Check power supply circuit.
NO
Check laser circuit.
Check focus circuit.
Check disc.
NO
NO
Check tracking servo circuit.
Check audio circuit.
Does red power led turn on?
Is power on?
Does initial read work?
Does it play?
Does it output audio?
OK