Replacement Series 1 CPU IC Sub-Board for Bally Home Pinballs

A working repair sub-board kit for the 3 x 40 pin IC MPU board. This replaces the 3850 CPU and the two 3851 PSU (Program Storage Unit).

Before assuming one of the three 40 pin ICs is bad, please click this LINK to our Tech tips page for Bally Home pinballs! as the problem may not be the computer! You just need a voltmeter to run most tests...

This sub-board will replace the original CPU and IO ICs on the following Series 1 Bally Home Pinball games:

• 614-3000 Fireball
• 614-1000 Evel Knievel
• 606-1000 Fireball

Note this solders into the REAR of the MPU board, you need to remove all three 40 pin ICs (and sockets if present) from the board.
If you want the TILT light to work one trace must be cut and a jumper must be added to the game MPU board - see the images for the trace to be cut, and the small jumper wire to be added so the TILT light will work.

Packed in anti-static bag includes 40 pin IC.

No warranty against failure - you must verify all voltages prior to installing! This can be done with the CPU sub-board CPU-IC not installed - no coils should fire! If any coils energize then there is a problem with that coils' control logic.

We can service your Series 1 MPU board as well as your Regulator/Rectifier board - please follow the shipping instructions on the bottom of our home page here.