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Troubleshooting Guide - Sharp LC-20S5E-BK Service Manual

Lcd color television
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POWER DOES NOT TURN ON
IS F501 BROKEN ?
NO
IS THERE VOLTAGE
AT PIN 4 OF IC501
18.9V ?
YES
IS THERE VOLTAGE
AT PIN 2 OF IC504
AT5V ?
YES
CHANGE AV PCB.

TROUBLESHOOTING GUIDE

YES
NO
NO
E-1
CHANGE F501.
CHECK IC501 AND
PERIPHERAL CIRCUIT.
CHECK IC504 AND
PERIPHERAL CIRCUIT.
OR CHANGE IC504.

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