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2. No Raster
No Raster
Is CRT
heater red-hot?
Turn the Brightness
& Contrast control
to set Maximum
Is whole
screen bright?
Check
G1 voltage about
-30V?
Is CRT
G2 (screen) voltage
about 500V?
Is 80Vdc
line normal?
Does
turning the Brightness
control counterclockwise
make screen
bright?
Trouble in FBT
All manuals and user guides at all-guides.com
No
Voltage (CRT PWB)
Yes
Trouble in
power supply
circuit
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
16
Is Heater
No
about 6V?
Yes
Refer to trouble in
power supply unit.
Trouble in power
supply circuit
Trouble in G1
line of Main PWB
Trouble in FBT
Trouble in 80Vdc
Refer to trouble
line of power
in P.S.U
supply unit
High Voltage
trouble in FBT
Trouble in
CRT
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