Ms. Pac-Man another unmistakable recognizable gaming character at over 30 years old still continues to become staples in peoples video game collections. Although Similar to Pac-Man; In Ms. Pac-Man you have the fruit that jumps around, in addition to 4 ways to pass through and escape the maze as opposed to Pac-man's 2 ways. Ms. Pac-Man In my opinion is also better because you get different mazes after every few screens. I also tracked down this game locally on craigslist. Being that the game is so popular and common most likely on any craigslist you will find some form of a Ms. Pac-Man cabinet. Sometimes you might see multicades, or conversions, cocktails, cabarets (mini), and of course the traditional upright. I was able to track down an original cabinet in fair cosmetic condition but it was in non-working condition. I was happy because I knew that would keep the cost down and I would be able to fix it eventually.
The first thing I did was tested the Ms. Pac-Man PCB inside my Pac-Man cabinet since it shares the same pinout. I had the RSOD, also known as the Red Screen Of Death. So the guy I bought my original Pac-Man PCB i had sent this one out to be repaired for a very fair price. Although Typically working replacement boards go for around 50-90 shipped. I wanted to keep my original board inside the cabinet since all of my numbers matched.While the board was being sent out although the cabinet was in fair condition, I wanted to sand it down / fix any wood issues / repaint.
Inside the cabinet typically the power supplies go bad after 30 years, or need to be rebuilt. I decided to order a switching power supply conversion kit through arcadeshop.com. Below you can see photo's of the kit installed:
It had an original G-07 monitor inside the cabinet, I noticed a blown fuse, I wasn't sure what the condition was with the monitor so I decided to clean / wash it to get rid of 30 year old crud that had built up around sensitive parts. Temporarily I replaced the monitor with a virtually new burn in free Wells Gardner. Below you can see the before and after pictures of the original G07, down the road I will replace / fix the chasi and possibly re-cap, new flyback fix the original monitor. down the road I'm sure I'll utilize it as the CRT monitors are getting harder to find.
Before and After cleaning the g07 monitor:


However according to Don Hodges:
"The origin of this bug is in the original Pac-Man code. There is a subroutine which controls the flashing energizers in the attract mode of Pac-Man. Normally, this subroutine is only supposed to run during the introduction screen where the ghosts are introduced by name. On some occasions, when the player dies, this subroutine gets called, which flashes the 2 screen location where these energizers are located. When it is called in Pac-Man, it causes the disappearance of the dot that is 2 to the left of the starting point of Pac-Man in the maze. The other screen location that is affected is already blank, so the changed color has no visible effect there. In Ms. Pac-Man, it causes 2 screen locations to change color, which affects the different mazes in slightly different ways. For the first maze, this same dot to the left of where Ms. Pac-Man begins changes color to pink. Like in Pac-Man, the other screen location that is affected is already blank, so the changed color has no visible effect there. For the second maze, two locations are affected. For the third maze, only one location is visibly affected. For the fourth maze, two locations are affected. In any case, this bug is very difficult to spot because usually the anomalies are covered up by a screen refresh almost immediately after they are created. The exception to this rule is during the demo mode of Ms. Pac-Man. If you watch the demo long enough, eventually you will notice that the dot in question is colored pink on rare occasions after Ms. Pac-Man has died during the demo, and it stays pink on screen long enough to be easily observed."















