How to make a test bench rig for Bally-18/35 MPU boards using a PC power supply

I found this old video the other day and realized I didn’t have a post on my main site showcasing this video so I wanted to add it (also, this was before I learned the proper pronunciation of “Bally” LOL…. bah-lee).

Before you turn a new game on: checking coils

Since we picked up this Williams Earthshaker in such horrible condition and have never seen it powered up, before we even attempt to turn it on, we need to go over some areas of the game to make sure that applying power doesn’t cause more harm.  In this article, I go over one check, which is making sure all the coils/solenoids are in good condition.  A burned-out coil can cause damage in other areas of the machine, or even a fire.