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I have a 27K7401 monitor with a single horizontal line on the screen. I have checked all of the resistors and capacitors in the service repair guide for K7400 and may have found at least R303 out of spec, R402 with an open, and a possible bad C610. I am having issues verifing what value R402...

I am having issues with a bootleg Pacman board that is showing scrolling garbage on the screen. I also having issues identifying what bootleg board I have. video of scrolling garbage: https://www.youtube.com/watch?v=ovDQRZ7a5M4 board screenshot...