A trimmer capacitor with a reasonable range instead of a fixed capacitor on the TMS9918A pin 40 would be useful to fine-tune the frequency and get good colors.
On one of my aged TVs, I need to put a finger on this pin to get any colors, regardless of fine tuning.
A trimmer capacitor with a reasonable range instead of a fixed capacitor on the TMS9918A pin 40 would be useful to fine-tune the frequency and get good colors.
On one of my aged TVs, I need to put a finger on this pin to get any colors, regardless of fine tuning.