Name of game, manufacturer and year: Mousin' Around, Bally, 1989

Did it ever work in your Possession?: yes

Did You Run the Diagnostics?: yes, no issues come up

Where did the game come from?: a vendor that restores pinball machines

Are any aftermarket boards installed?: no

What was the last service you performed?: replaced the diverter coil

Battery Corrosion: no

LED or Incandescent lighting?: leds on playfield, incandescent flashers and backbox

Blown fuses: no

Smell: nothing weird

Obvious Past Work Performed: none

Do you have a Volt Meter?: yes

Can you solder?: yes

Location: Buggenhout, Belgium

The left display on my Mousin' Around is missing the entire row of the top segments and the top right diagonal segments. I bought the cab about a year ago. Back then only the diagonal segment was missing, now since a month or 2 the top segment also stopped working. Can anyone guide me through repairing this? I'd like to try and fix the display before replacing it entirely with a led display. I have a multimeter and I can solder. Thanks in advance!

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I have reseated the ribbon cable and switched the connection of the left and right displays, still misses the same rows

Reseated the IDC connectors, contacts looked clean. Not sure how I should test for loose wires

I'm trying to read the schematics of the left display board from the manual found on ipdb. It's a bit hard to read them, but if I'm correct I can see the following things:

- The segments that are missing are labeled a and k
- "A" goes from J3 through U2C 4049, U8A UDN-7180 (?) and R68 8.2k (?) Ohm into the display
- "K" goes from J3 through U3B 4049, U8C UDN-7180 (?) and R62 8.2k (?) Ohm into the display

I can't really read the chip names, but worst case those seem like the ones to replace if nothing else works.

What I don't understand are the inputs from J1 and J2. Those go into the display on inputs labelled STB (or something) 1 through 16. What purpose do those serve? As that seems to be what ThePinballCo-op suggests testing continuity for.

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I checked continuity between the back of the connectors and the pins on the board with a voltmeter. They all seem to be connected correctly. However, what you suggested was checking for loose wires, but doesn't this only check for a good connection between the header and connector?