Trouble Shooting Table; Power Troubleshooting - Sharp LC-60LE452U Service Manual

5 Trouble shooting table

5.1 Power Troubleshooting

Check the
Sharp LC-60LE450U/LC-60LE452U Service manual
NG
power
Main Board
NG
Repair the
electric circuit
(5V) of L2
NG
Repair the
electric
circuit
(3.6V) of U5
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
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
Check the external power
supply（12V/5V/5VS）
OK
Check the voltage
(3.3V) of U8
OK
Check the
voltage (1.8V) of
U4
OK
NG
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