System 80 DD power board issues

Ok, so a few weeks ago, I turn on my Devils dare, and the scoring lights kinda pulse zeros and no credit light comes on...its like the game hasn't finished starting up, because there is no response to coins, or hitting the book keeping button.

Ok, I can do many things, electronics is my weakest area...I looked at the power board and it looks burnt at one of the capacitors...and is pretty hot to the touch.

I order a brand new power supply board and put it in, Viola ! Works !! I play a couple games and shut off in order to do a bit of cleaning. I turn it back on, guess what, same problem as orginally before the new power supply board installed....arrrggghhh

So, where do I check/look next ? Is is possible I fried this power supply board as well ?

Any thoughts are appreciated !!

OMG !!! Thank you guys soooo much...that was way too easy ! I promise to never buy anything until I consult the gurus again !! LOL

Actually, for $60 with a new power supply, its no a bad thing anyway, but it really bummed me out that it fixed the problem, then it came back !

You guys have a great big shout out from me ! Thank you so much again !

Its guys like you that keep this hobby strong !