Dell E177FPc Specifications download pdf (Page 43)

17" LCD Color Monitor Dell E177FPc

No video, LED orange

HS/VS of input is normal

Measure U701 PIN2= 3.3V

U702 PIN2= 1.8V

X401 oscillating waveform is normal

Check U701, U702,

D704

If voltage of U403 PIN5/6 is normal

Check signal cable,

D409, D408

Check X401, C427, C428

Replace U403

Replace U401

Replace U402

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Dell E177FPc Specifications Page 43