Hello Pinheads. First of all, thank you to any and all who contribute to this thread in any way. My Demolition Man started slowly acting weird before it finally stopped fully booting. First the display started acting wacky and intermittent. Then the machine would turn off and reset. Now it attempts to boot but doesn't all the way. I get the initial "ping" and then nothing but a few playfield lights that come on and a few on the display.

After reading the threads, visually inspecting components and going through the pinwiki page suggestions, I visually inspected all the boards, tested all my fuses, reseated all the connectors, measured the voltages at the test points on the MPU and found them okay, except the 50V test point (it acts open, not grounded). After closer inspection, it looks like BR5 may have some leakage or damage. As a "since I'm doing one, I may as well do them all" precaution, I will be replacing all the bridge rectifiers and high capacitance caps this weekend. Any thoughts would be greatly appreciated before I take it to my guy and spend a few hundred bucks on repair. Thank you again in advance.

You are absolutely correct and make a very good point. The last thig I want to do is pull the cap via's. Thank you for the heads up.

Looks like all the diodes in the bridge rectifier are good as well as all the 15uF caps. I found a blown F112 fuse (which I didn't catch until after I pulled the board) so fingers crossed that is the fix. Upon inspection, I also found some cold solder joints from previous rework that may be contributing to the intermittent game play. (Before the fuse blew). Thank you for your help. So glad I didn't have to replace any components..... Yet.