Al+5V Is Not Output; Al+3.3V Is Not Output; When The Output Voltage Fluctuates; When Buzz Sound Can Be Heard In The Vicinity Of Power Circuit - Philips 42PFL3704D/F7 Service Manual

FLOW CHART NO.5

AL+5V is not output.

FLOW CHART NO.6

AL+3.3V is not output.

( Jack Power CBA )
FLOW CHART NO.7

When the output voltage fluctuates.

FLOW CHART NO.8

When buzz sound can be heard in the vicinity of power circuit.

FLOW CHART NO.9
TUNER+31V is not output.
Yes
Yes
Yes
Yes
Yes
No
Check C1103, D1101, D1102 and their periphery
circuit, and service it if defective.
No
Check C1103, D1101, D1102 and their periphery
circuit, and service it if defective.
No
Check D1109 and their periphery circuit, and
service it if defective.
No
Check D616, D637, IC601 and their periphery
circuit, and service it if defective.
No
Check C617, D618, D619 and their periphery
circuit, and service it if defective.
8-2 A91H2TR