Sharp LC-60LE452U User Manual

Sharp LC-60LE450U/LC-60LE452U Service manual
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5.4.2 Function Troubleshooting（No Search Channels）
OK
OK
OK
NG
1.Repair U7 timing circuit
2.Repair U3 timing circuit
1.Check U7 timing signal
2.Check U3 timing signal
1.Repair U7 or U3 I2C circuit
2.Check the connection of U7 or U3
3.Change U7 or U3
1.Check U7 I2C
2.Check U3 I2C
1.Repair the U5 voltage (3.3V)
2.Repair the U7 voltage (3.3V)
1.Check the U5 voltage (3.3V)
2.Check the U7 voltage (3.3V)
Debug RF
signal machine
No Search
Channels
Check RF signal
OK
NG
NG
NG
OK
1.Check the connection of U7
2.Check the connection of U3
NG
1. Welding U7
2 .Welding U3
OK
Change U3

Sharp LC-60LE452U Specifications

General

Brand	Sharp
Model	LC-60LE452U
Category	LED TV
Language	English