Philips 40PFL4707/F7 - TV Software Upgrade; Checking Current Software Version; Downloading Software Updates; Starting Software Upgrade Process

8-2 PL12.3ATR
No
AMP+24V is not output.
FLOW CHART NO.6
Is approximately +24V voltage supplied to the cathode
of D401?
Ye s
Check D401, D415, C403, C404 and their periphery
circuit. Repair it if defective.
Check if there is any leak or short-circuit on the load
circuit. Repair it if defective.
Check if there is any leak or short-circuit on the load
circuit. Repair it if defective.
Check if there is any leak or short-circuit on the load
circuit. Repair it if defective.
P-ON+12V is not output.
FLOW CHART NO.5
Is approximately +12V voltage supplied to the cathode
of D406(D407)?
No
Ye s
Check D406, D407, D413, C411, C412 and their
periphery circuit. Repair it if defective.
LED+24V is not output.
FLOW CHART NO.7
Is approximately +24V voltage supplied to the
cathode of D402(D403, D404)?
Ye s
Check D402, D403, D404, D410, C405, C406 and
their periphery circuit. Repair it if defective.
No
AL+3.3V is not output.
FLOW CHART NO.8 [TYPE A]
Is approximately +24V voltage supplied to the
collector of Q501?
Is approximately +4V voltage supplied to the base of
Q501?
No
Ye s
Ye s
See FLOW CHART NO.7 <LED+24V is not output.>
Check IC501 and their periphery circuit. Repair it if
defective.
No
Replace Q501.
AL+5.3V is not output.
FLOW CHART NO.8 [TYPE B]
Is approximately +24V voltage supplied to the
collector of Q501A?
Is approximately +6V voltage supplied to the base of
Q501A?
No
Ye s
Ye s
See FLOW CHART NO.7 <LED+24V is not output.>
Check IC501 and their periphery circuit. Repair it if
defective.
No
Replace Q501A.