Star Tech Journal

ELECTROHOME GO7 MONITOR TIPS
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SYMPTOM
Monitor appears completely dead - power sup-
ply voltage too high.
SYMPTOM
Monitor appears completely dead; power supply
voltage 0 volts.
SOLUTION
Replace capacitor C511 (47 microfarad, 160
volts).
SOLUTION
Replace resistor R902 (2 ohms, 7 watts).
CAUSE
Failure of C511 causes false triggering of the X-
ray protector circuit in the monitor. This causes
the monitor to shut down. This symptom may be
intermittent, causing the monitor to operate
some of the time but shut down occasionally.
Examine C511. If it is the original capacitor,
change it!
CAUSE
Monitor fuses will be okay but nothing works.
R902 is open!
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SYMPTOM
Sides of picture are curved instead of straight.
SOLUTION
Replace capacitors C517 (100 microfarad, 16
volts) and C518 (220 microfarad, 16 volts).
CAUSE
The curved sides of the picture are an effect
known as "keystoning." The screen will appear
to be narrower at one end than the other.
SYMPTOM
Screen will appear blank but will show raster
(white screen) when brightness (screen) control
is turned up. Vertical retrace lines (diagonal
lines) will also appear on the screen. No picture
is visible.
SOLUTION
Replaced transistor X304 or X305 (or possibly
both). X304 and X305 control the video output
transistors on the "neck" board of the monitor.
When one or both of these transistors short
circuit, the video output transistors will be shut
off.