Video Game Repair/ms pac man


ms pac man screen
ms pac man screen  
I have a 1981 midway Ms Pac-man.  I haven't used it in about 6 months.  When I turned it on the screen lights up but I have a very scrambled picture of just random letters and symbols.  The test switch does not do any thing.  I have taken all of the connectors apart to check for corrosion, but no help.The  main board is part no.  a082-91375-b000  the aux board is a084-91415-8167.  Any help would be appreciated Thanks

Hi Don,

Your problem is not an uncommon one, especially when the machine is left off for a long period of time. The first thing that you should do is remove the board from the cabinet and lay it on a flat surface.

Then view this video on how to re-seat all of the socketed chips on the board.

Be careful if any of the chips have completely black legs. If you're not careful, it's possible to break the legs off.

When you pull the chips, use an eraser to gently clean them. Do them one at a time and be absolutely certain to replace them in the same orientation that you remove them.

This should take care of your problem.

Let me know how this goes!


Video Game Repair

All Answers

Answers by Expert:

Ask Experts


Brian Penzone


I can answer questions regarding coin-operated arcade game questions down to the logic board. Error codes, erratic operation, dead boards, I can help with them all. I can help with video monitors on a very limited and basic level only.


I have spent nearly 20 years as an avid arcade collector, and spent nearly 10 of those years as the lead tech for a large arcade operator, doing work for manufacturers and other coin-operated amusement companies around the globe. I maintain a good sized collection of arcade games, as well as a large inventory of spare parts for a wide range of arcade machines.

BA from The Ohio State University, Associates from DeVry University

©2017 All rights reserved.