Philips 42PFL3704D/F7 - P-ON+8.2 V Is Not Output; P-ON+5 V Is Not Output; P-ON+3.3 V Is Not Output

8-3 A91H2TR
Replace Q603.
Is approximately +9V voltage supplied to the
base of Q603?
Ye s
No
Check D627, D628 and their periphery circuit, and
service it if defective.
No
P-ON+8.2V is not output.
FLOW CHART NO.10
Is approximately +16.5V voltage supplied to the
collector of Q603?
Ye s
Check C622, C624, D617, D624 and their periphery
circuit, and service it if defective.
P-ON+5V is not output.
FLOW CHART NO.11
Is approximately +6V voltage supplied to the
collector of Q604?
Check C619, D620 and their per
iphery circuit,
and service it if defective.
Ye s
No
Replace Q604.
P-ON+3.3V is not output.
FLOW CHART NO.12
Is approximately +5V voltage supplied to the
collector of Q605?
Is approximately +4V voltage supplied to the
base of Q605?
No
Ye s
Ye s
Check D631 and their periphery circuit, and service
it if defective.
Check C621, D623 and their periphery circuit, and
service it if defective.
Is approximately +6V voltage supplied to the
base of Q604?
No
Ye s
Check D638 and their periphery circuit, and service
it if defective.
No
Replace Q605.