Repair Flow Chart - Philips 220E1SB/00 Service Manual

11. Repair Flow Chart

11.1 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, C707 and U703
NG
Replace X401
Meridian 1
39