2. Trouble in Power on
Check on Scaler(U9).
Is the
Power LED toggled
between on and
off?
Off
Is the power
cord well
connected?
Yes
Check the
waveform of pin 8
of
-com(U6).
Yes
Is 5VS line
normal(pin 8 of
CON2)?
Yes
On
Refer to No video
or No raster.
Check if the power switch
No
is on position and
Connect the power
cord correctly.
No
Trouble in U7 & Q3
and its ambient circuit.
No
Check the power board
(5VS of CON2).
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