LG FLATRON E2041T - Troubleshooting Guide

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TROUBLESHOOTING GUIDE
1. NO POWER
NO POWER
(POWER INDICATOR OFF)
CHECK IC500
NO
NO
CHECK POWER BOARD,
AND FIND OUT A SHORT
POINT AS OPENING
EACH POWER LINE
NO
CHECK CRYSTAL(X500)
YES
YES
YES
CHECK
PULSE
1
2
13
14
Waveforms
1
P602#1,2
2
Copyright
Only for training and service purposes
LGE Internal Use Only
2010 LG Electronics. Inc. All right reserved.
P602 VOLTAGE
PIN1/2(5V)?
IS IC504 OUT PIN
IC505 OUT PIN
CHECK IC500 Pin 94
CHECK IC504(3.3V)
IC505(1.8V)
IC500#94
2