Repair Flow Chart - Philips 190B9CS/00 Service Manual

12. Repair Flow Chart

12.1 Main Board
(1). No Power
No power
Press power key and look
if the picture is normal
NG
Please reinsert and make sure
the AC of 100-240 is normal
OK
Measure U703 PIN2=3.3V
OK
X401 oscillate waveforms
are normal
OK
Replace U401
NG
Reinsert or check the
Adapter/Inverter section
NG
Check C706 and C708
NG
Replace X401
HUDSON 9 45