LED Pac-Maze Printed Circuit Board


This is a direct replacement Mr & Mrs Pacman Pinball Pac-Maze printed circuit board (aka Pac-Lite Matrix or Vid-Grid) using red and yellow LEDs. The original board used 25 yellow and 25 red mini incandescent 7381 light bulbs. My version Pac-Maze board uses 50 yellow and 50 red surface mount LEDs in the 5050 (5mm by 5mm) package. The new LED Pac-Maze board allows the playfield to be 20 degrees cooler*, the lights are brighter, and consistent in color and brightness across the maze. The LED Pacmaze board works with stock Bally main driver boards, Alltek main driver boards, and Siegecraft LED adapter boards.

Stock Pac-Maze(left)(right)New LED Pac-Maze

Installation:
1) Lift playfield.
2) Remove connectors J1 and J2 on stock Pacmaze board.
3) Remove 4 lock nuts holding board & remove board.
4) Clean the back of the playfield between the holes and use a wet-wipe or Q-tip to clean the underside of the inserts.
5) Install the 25 Isolation Tubes on the backside of the playfield (optional).
6) Swap 4 rubber grommets from stock to new LED Pacmaze board.
7) Install new LED board with 4 lock nuts.
8) Install J1 and J2 connectors.
9) Lower playfield.

Check out my YouTube video for further information and installation instructions.

The new LED Pacmaze board will expose any weak 2n5060 (smaller) SCRs on your main lamp board. The new LEDs will blink if you need to replace any of these SCR. These would be the yellow LEDs at Pacmaze locations below as seen from the top of the playfield. This occured with one of my SCRs in my machine. I have not heard of this issue occuring with other owners yet.

1 2 3 4 5 Q57 Q36 Q29 Q14 Q50
6 7 8 9 10 Q38 Q27 Q12 Q51 Q44
11 12 - - - Q28 Q13 - - -
- - - - - - - - - -
21 22 - - 25 Q60 Q37 - - Q59


The LEDs are mounted to the board and are further away from the inserts than the stock incandescent bulbs. Because of this, there can be a little bit of LED light bleeding into adjacent inserts. In order to fix this, I have included 25 isolation tubes which can be glued to the playfield as shown. I used rubber cement to attach the isolation tubes. Use the included sticky paper to help apply rubber cement to the isolation tubes. Also apply rubber cement around the insert holes under the playfield. Allow to dry. Then press the tube on. Wiggle a bit to make sure they are attached.



Cost is $90 plus $10 shipping to US addresses. I will manually add additional cost for international shipping. Typically another $12 for Europe. A little more for Australia. A little less for Canada.



I will throw in an extra set of rubber grommets and locknuts for free.


Besides the Red (character name Blinky) ghost lights, I have the other colored ghosts as well. I have special boards with the Pink (Pinky), Blue (Inky), or Orange (Clyde) colored LED ghosts - in place of the red LED ghost. Let me know if you want one of these when you order.

* I measured 106 degF on the playfield surface (glass removed) on the Pacmaze after running attract mode for about 60 minutues with the stock incandescent Pacmaze. I measured 86 degF with the new LED Pacmaze. The room temperature was 76 degF. Temperatures could be higher during play as the Pacmaze lights would be on longer than in attract mode.

Version History: (v0) Only a few produced. Only work with Alltek or Siegecraft boards. (v1+) Works with stock Bally driver board as well. Versions after v1 have tweaks which do not change the function of the board. All versions currently shipped are v1+.