Quote:
Originally Posted by Alex KL-1
Makes all sense. We can imagine the waveforms differing a little according with CRT variances, but certainly not a radical difference. At least with my experiences with modern TV when I repairing it (and monitors), is that the waveforms always resemble the originals when it are working well. Besides the suspicious DC voltages.
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Thanks. I went ahead and probed Pins 1 and 2 of the Pin Amp IC, and it seems like the AC component that's supposed to vary the parabola on the IC's output is not properly varying when I adjust the Pin Amp potentiometers.
I am now thinking it's most likely the fault of the IC, but also maybe it's some other component in the circuit holding the IC down at the input or output.
Does anything jump out to check?