LG Flatron F720B - Troubleshooting: Missing Color

Proper Video levels are
on P301 Pin 1, 3 and 5.
IC401 Pins 27 and 28
inputs are right at
each function?
21. User Control Failure
Check connector Ass’y.
NO
Done.
Check and replace IC401.
Check and replace function key.
YES
22. Missing Color
NO
Change the CRT.
Check signal generator and
signal cable.
NO
Refer to 2 No Charcter.
NO
Check and replace IC303
and IC304
NO
Check C341, C346 and G2 wire.
Check around FBT circuits also.
YES
YES
YES
YES
- 32 -
Proper AC voltage are
on all cathodes?
Proper DC voltage are
on all cathodes?
G2 voltage is right?
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