Sharp LC-60LE452U

Sharp LC-60LE450U/LC-60LE452U Service manual
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5 Trouble shooting table
5.1 Power Troubleshooting
Check the power
NG
Check the external power
supply（12V/5V/5VS）
OK
Check the voltage
(3.3V) of U8
NG
OK
Repair the
electric circuit
(5V) of L2
NG
Check the
voltage (1.8V) of
U4
Repair the
electric
circuit
(3.6V) of U5
OK
1.Check the voltage (5V)
2.Check the voltage (1.2V) of U6
3.Check the voltage (3.3V) of U8
4.Check the voltage (1.8V) of U4
NG
1.Repair the electric circuit (5V)
2.Repair the electric circuit (1.2V) of U6
3.Repair the electric circuit (3.3V) of U8
4.Repair the electric circuit (1.8V) of U4
Main Board