Members,

I need some help with my Pinbot! First off I had a perfectly working display on my Pinbot prior to this issue. The issue arose when I was repairing a spare 7 digit display panel that had a pin broke on it that controlled the B segments on the display. I was testing my fix of the pin on my Pinbot’s player 4 connector. I’m not sure what I did, I’ve been working long hours at work and have a newborn at home, so in my daze maybe I accidently connected the ribbon cable backwards or something but now when I plug in the spare display into the player 4 ribbon cable I get the UNITS digit, which is the first number, super bright and the rest of the digits on Player 3 and Player 4 under the normal brightness. On the original player 4 display if I plug that in the Units digit is super bright and the rest of Player 4 digits normal and Player 3’s digits are to dim to see. I tried 2 different ribbon cables and the same thing happens with both.

Months ago I did the zener diode mod to lower the voltage for the displays which I think left the voltage around 94v and -94v. I wasn’t able to test the voltage yet but I imagine it’s still the same as the Player 1 and Player 2 displays work just fine and are the same brightness as before the issue. I had some spare power supply capacitor kits laying around so I installed new capacitors for C1, C3, C10, & C5 as I think those all deal with high voltage display. After the cap install the displays acted the same with the bright unit digit on player 3. I think I damaged something on the Alphanumeric Master Display Board but can’t see anything. Could somebody lend me an idea of something I should look for? Too me it appears that the unit digit is getting higher voltage then all of the other digits for Player 3 and Player 4 and hogging all the power.

Thanks,

Mike