C128 fixing video signal
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C128 fixing video signal
Today I’ve decided try to fix the video signal on my C128. The video signal was not as bright as it should be.
I’ve decided to remove the RF modulator and use the RGBI output and replace it with a new one based on TSH7316 IC.
The module
After replacing the RF modulator with the TSH7316, the video signal is the same, so the problem is not the RF modulator :-). I will continue investigating the issue. Maybe the problem is in the MOS8701 chip or the VIC-II chip.
The MOS 8701 is a clock generator chip used in the C128. It helps to generate the video clock.