Commodore 1940 - Page 14

2.No Raster
Trouble in
. Turn the brightness
& contrast control
fully maximum
Is CRT G2, Screen
Voltage (CRT PWA)About 250V?
(150V-500V)
Does
turning the screen of
FBT control counterclockwise
make screen
bright?
NO
NO
NO
NO
Trouble in G1 line
of Main PWA
Trouble in FBT
High Voltage
trouble in FBT
YES
""----[
______ ----l
Raster OK
11
Refer to trouble
in Horizontal output
circuit.