I'm amazed by the amount of detail you go into to help others. I used to think I'd never understand logic without doing a course but your videos have made it just click for me. Thank you very much!

Nice to see you back doctor hope your well. Another great repair as usual keep up the great work

Brilliant work. Thanks for the video.

Good job doc, glad to see a new video from you :-)

Well done Doktor!

Great video, always awesome seeing new vids :D

What converter do you use to display the CGA signal to the television?

DOKTORZETT, some arcade games use MASKED ROM chips instead of EPROM chips any reasons why?