3
How to check the return Unit
1, No Video output
No Video output
Connect the AV OK
Insert the AC Power line into
the connectors
The display on the set
OK
NG
The “Philips” logo should
be on the screen and the
witch will display
Insert the AC power
line over again
NG
OK
NG
PSU Fail
The LED
module Fail
Press the standby button to
power on the set
The “Philips” logo should be
on the screen and the witch
will display
NG
The DSP Fail
Replace
Mainboard PCBA
Replace
frontboard
PCBA
TEST 1.2V and 3.3V
Power
NG
OK
Replace flash U11
NG
Replace Q5,Q6
NG