No standby LED
Check the voltage of PJ105 (Power IN) at Main board
and also check the voltage of CN201(Power Out) at Power Supply
when it removes the cable from Main board.
Check the Power cord and AC power outlet.
Check the Main power switch.
Check the US-622 and both-ended voltage (same as AC IN)
(P100:Thermal guard switch).
Check the Key Board cable has broken or not.
Check the connect cables inside the Unit.
Problem resolved.
Replace the power supply
Replace the Main board
Yes
No
No
Yes
Does the projector
power up ?
Is the power supply
outputting ?
54
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