Inv+16V Is Not Output; Al+3.3V Is Not Output; P-On+5V Is Not Output - FUNAI LT850-M32 Service Manual

FLOW CHART NO.5

INV+16V is not output.

FLOW CHART NO.6

AL+3.3V is not output.

Is approximately 6V voltage supplied to the collector
of Q521?
Is approximately 4V voltage supplied to the base
of Q521?
FLOW CHART NO.7

P-ON+5V is not output.

Is approximately 6V voltage supplied to the base of
Q518?
Replace Q518.
Yes
Yes
Yes
Yes
Yes
Yes
No
Check D504, D505, C503 and their periphery circuit,
and service it defective.
No
Check Q504, Q505, D506, D507, P-ON-H1 line and
their periphery circuit, and service it defective.
No Check D525, C516 and their periphery circuit, and
service it if defective.
No Check D552 and their periphery circuit, and
service it if defective.
No
Check D525, C516 and their periphery circuit, and
service it if defective.
No
Check Q508, Q520, D543, P-ON-H2 line and their
periphery circuit, and service it if defective.
8-2 A0CF0TR