Centipede Arcade PCB Repair - Atari 1981 - Missing Sprites

An old classic: Centipede by Atari 1981. The PCB we are looking at comes from my dedicated cabinet and started acting up lately. All the motion objects vanished from the screen. In this video we are troubleshooting the board step by step and are by the way discussing about a basic priniple/strategy of arcade pcb repair. As tools/helpers we are using the games schematics, our logic probe, oscilloscope and our brains of course! Have fun!

[@kieljohnson6507]

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

[@oljackoful]

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!

[@ToltecMerc]

Well done Doktor!

[@simonbinni5269]

Brilliant work. Thanks for the video.

[@Fraspe]

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

[@SoulOfficer]

Great video, always awesome seeing new vids :D

[@troxel7368]

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

[@billwilliams6338]

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