#Mystic Bally ss. The ones digit went out on all displays this afternoon. I had been replacing the lamp socket in a pop bumper. Also, I messed around with the game settings some, on the Alltek board.

Could use some guidance.

Also, the sound is cutting out, as the machine counts down the bonuses. A week or so ago, the sound went real weird, like the pitch was greatly increased. That only lasted for a few games.

Quench Is this the right one? (red arrow)

I cut off the old end and squeezed the new end in, but it didn't help any. (Didn't seem to hurt anything, either!) Is there a trick to it? Do I need to bare the wire or get a special tool?

ones digit (resized).png

It does go all the way through, but it’s hard to see in the picture because the end is bare wire. I should have trimmed it off.

I’ll play with the multimeter and report back.

Quench Well, this is weird.

If I am doing it correctly... and if you meant to say that the 10s digit is on the left side of resistor R2 facing the circuit board as it is attached to the machine, I get .7 at the 5th pin on the display unit. The meter doesn't budge from 1 (seems to be the default) on the left side of the R1 resistor and pin 4 at the display.

This is on the 200 setting of the multimeter, but changing that setting doesn't get me anything different on the left side of the R1 and pin 4 on the display unit. Or the right side of R1.

If, on the other hand you really meant the left side of resister R2, then all I get is the default 1 touching that to pin 5. Or pin 4 .

Just as a test, I touched the two leads to some braided ground wire, about an inch apart, and got a different reading than the default 1.

Turning the multimeter to the diode setting, I get 1205 probing both sides of R1 and 1200 for both sides of R2. In case that helps any.

All fixed!

Using a very specialized tool to mash down on the wire (a toothpick with the point bitten off) fixed it. I'd thought I'd made sure the wire was well in there before, but obviously it needed a good tool.

Quench Thank you very much!