Harley Davidson Sega/Stern whitestar display repair

Very quick and simple one. Harley davidson shows up. The DMD was cutting out as the machine was sliding on the carpet. Was odd. It would barely be on. Slide it slightly and it was on full.

First, I swapped DMD. Problem stayed the same. Next, I wiggled some wires around by the DMD power board in the upper left of the cabinet. I found by tapping that area, the DMD seemed to flicker. I tapped on some of the transistors and found them to be loose. Pulled off the little DMD power board, reflowed the solder on the transistors. Reinstalled it, and problem solved.