Al+3.3V Is Not Outputted; Al+40V Is Not Outputted; Al+5V Is Not Outputted; Al+12V Is Not Outputted - Sharp LC-15AV1U Service Manual

FLOW CHART NO.6

AL+3.3V is not outputted.

Is 3.3V voltage supplied to the cathode of
FLOW CHART NO.7

AL+40V is not outputted.

Replace Q516.
FLOW CHART NO.8

AL+5V is not outputted.

Is 5V voltage supplied to the cathode of D633?
FLOW CHART NO.9
AL+33V is not outputted.
Check D641,C648,C649,R658 and their
periphery circuit, and service it if defective.
FLOW CHART NO.10

AL+12V is not outputted.

D514?
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Check D635,C637 and their periphery circuit, and
service it if defective.
No
Check D645,D646,C644 and their periphery circuit,
and service it if defective.
No
Check Q517 and P-ON-H line, and service it if
defective.
No
Check D633,C635 and their periphery circuit, and
service it if defective.
No
No
Check D630,D632 and their periphery circuit, and
service it if defective.
No
Check C634,C636,L630 and their periphery circuit,
and service it if defective.
No
Check Q401 and BACKLIGHT-SW line, and
service it if defective.
6-3
L0370TS