Dell E177FPc Service Manual page 45

17" LCD Color Monitor
White screen
Check R725 whether there is a voltage of 3.3V, when
the power is on
OK
If Q704, Q706 is broken or
CN101 abnormally soldered
OK
Replace PANEL or FPC cable
NG
X401 oscillating waveform is
normal
NG
45
NG
OK
Replace U401
Replace Q704, Q706 or re-solder CN101
Dell E177FPc
Check X401, C427,
C428