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No Voltage output
Is voltage supplied Via CN11? YES
NO
Check F801, L801, D802
The voltage of #1 of IC11 is 5.7V and stable NO
YES
Check the secondary circuit
The voltage of #1 of IC11 fluctuate in 4.8V~5.7V YES
NO
Check the pattern and T11, L11, IC11
Measure resistance between GND of CN21 and each terminal of CN21 Resistance >> 100�
Terminal open and measure the output Voltage
The voltage is ok
NO
Check the parts outside module
YES
The 12DC of each wire of T11 is ok YES
NO
Change T11
Check the Diode, Condenser inside Module
NO Primary parts is ok YES
Change parts out of order
Secondary parts ok
NO
Change parts out of order
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