Vt+33V Is Not Output; Inv+22V Is Not Output; Dtv-On+3.3V Is Not Output; Dtv-On+2.5V Is Not Output - Sharp LC-20AV7U Service Manual

FLOW CHART NO.6

VT+33V is not output.

Is approximately 35V voltage supplied to the
cathode of D909?
FLOW CHART NO.7

INV+22V is not output.

FLOW CHART NO.8

DTV-ON+3.3V is not output.

Is approximately 5V voltage supplied to the
cathode of D906?
FLOW CHART NO.9

DTV-ON+2.5V is not output.

Check Q909, D924 and their periphery circuit,
and service it if defective.
Yes
Yes
Yes
Yes
No
See FLOW CHART No.5
No
Check D901, C901 and their periphery circuit, and
service it defective.
No
Check D906, C905 and their periphery circuit, and
service it if defective.
No
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A7144_45TS