Acer AL1751 - Page 34

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3. Panel Power Circuit
Replace PANEL
Measure Q703 base
is high level?
Check Q703 and Q704 are
broken or CN503 solder?
Check Correspondent
component.
OK
OK
NG
NG
X402 oscillate waveform
is normal
Replace U402
Replace X402
OK
Replace U401
NG
NG