Philips 160E1SB/93 - Repair Flow Chart; Main Board Troubleshooting

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36
36
Meridian 1
11. Repair Flow Chart
11.1 Main Board
(1). No Power
No power
Press power key and look if the
picture is normal
Please reinsert and make sure
the AC of 100-240 is normal
Reinsert or check the
Adapter/Inverter section
X401 oscillate waveforms are
normal
Check C426 and C427
Replace U401
Replace X401
OK
OK
OK
NG
NG
NG
NG
Measure U404 PIN2=3.3V