While playing ms pacman tonight the screen magically went to a full color screen.  It lasted till I cleared the dots then went back to the faded screen.  I hoped it fixed itself somehow but no such luck. Any ideas what could be wrong creating the faded screen but then momentarily being bright full color???  In the process of ordering a new cap kit. I would love to get the display as it should be.

Greetings all!  Just made my first arcade game purchase today......a hopefully "minor" fixer upper.  I purchased a Ms. Pacman, but upon inspection the cabinet and overlay around the screen is Pacman.  I have researched some online and learned that I can convert the machine to a Pacman by disconnecting a couple cards and installing "eproms".  How difficulty is this process, is it fool proof? 
The machine is in working condition.  The screen itself is a bit dim.  Also wondering if a cap kit will make it brighter?  I've been watching youtube videos and the cap kit install seems doable.

The cabinet has been completely painted.  I plan to repaint and allow my daughter to paint some pacman figures on the side.  Not factory, but will hopefully look good enough for the baseman. 

I appreciate any advice and help.  I've always wanted to mess with these things a bit.......this my first attempt.  Thanks!