New Life Games Tech Forums

I got a Universal Ultra board in with a batch of parts that had previously had a thermal event with visual effects.  I was not concerned with the problem area.  It ran all the lights on the buttons.  I removed the burned up IC socket and didn't replace it yet but I decided to power up the board.  It did a ram clear and took bills but not coins.  I hit bet max and I got real sounds but the reels made no attempt to move.  This is just some back ground the real issue is what I caused in my diagnosis.  I was attempting to do a meter reading on ch 3 in the picture and didn't take the time to switch to proper probes.  I shorted  CH7 to CH 3 with a meter probe and heard it go pop and then the BV light went out.  In hind sight I clearly had voltage or the light wouldn't have been on but now no voltage.  What in the pictured circuit could have failed?  I can't image it being the caps so that only leaves those 2 little noise filters.  Does it seem like logically that one of those could have made and audible pop?  They have no visible damage.  How do you test those?  Can I bypass it and see if the voltage comes back? 

I will also add that I put the original board back in the machine and all is well so the issue is on the board.

They just have inductors in them so they should measure just a few ohms from each input to output. If one is open, you 'might' be able to get by with just jumpering them.