Hi, please see attached picture showing a neck board in crt tv. The "G. Drive" and "G. Bias" pots don't work when I turn them - green color doesn't change on screen. Please advice! Thanks!
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Buy the schematic for that TV and measure the voltages to find any circuit faults or find out the CRT is not working.Please advice!
You beat me too it!Swap the R and G wires goinf from motherboard to neck board.
If the fault swaps to RED, the problem is on the motherboard. If the fault rermains on GREEN the fault is the neckboard or CRT.
Monitor boards are fairly complex, usually a cascade with complementary pair emitter followers - TVs are *MUCH* simpler, so should be pretty to trace the circuit out by hand.Hi, please see attached picture showing a neck board in crt tv. The "G. Drive" and "G. Bias" pots don't work when I turn them - green color doesn't change on screen. Please advice! Thanks!
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