I'm certain it has something to do with the circuit; game is Getaway HS2.

Driver/PSU board is WPC Fliptronics II (unless I misunderstand it).

What I expect to be reading is forward voltage of about .5/.6 and reverse of zero.

Instead, I see a good forward of .5/.6 but reverse it is nuts - keeps increasing, initial read of about 1.6v and looks to be steadily climbing.

At first, I thought it was just the BR. So I clipped/cleaned the through holes, took the BR out and lo and behold the damned thing is reading as I would expect - .5 ish and zero.

I'm sure it is the circuit (board) it's on but is it a fault of my DMM or is it just by design of this board?

I see the same issue on ALL BRs on this board.

...or am I just going mad?

I lost 5V on this board - was reading about 2VDC.

Was following along in PinWiki on the testing and I guess I read too far without context C11 and C5 also test less than expected, and are showing a little bulging.

...I neglected to mention I also replaced the voltage regulator, was a Fairchild F 8408/UA78H05SC. Did this after the fail.

I don't have a test kit set up for the board, so I'll have to get info on that when I connect it back into the game later this week.

I'm open to any ideas on what mods are recommended.