Description: This board is not plug and play. needs a couple of mosfets. please read description. Note: If you need an MPU also check my listing. This board came out of my Firepower project. I have done the following work to it: New 40 pin molex inter-board connector All headers replaced with molex square pinsAll PIA sockets replaced. Few combo chips for special solenoid socketed. Lamp matrix transistors TIP42 replaced with IRF9Z34N and resistors replaced with jumpers (https://pinside.com/pinball/forum/topic/vids-guide-to-bulletproofing-williams-system-6#post-581854) Many solenoid mosfets replaced. Two notes: 1. knocker circuit missing a resistor and a mosfet2. one special solenoid mosfet needs to be replaced (marked with orange tape). The machine I had this in had an issue that kept causing this circuit issues. Recommend checking the transistor and resistors for this solenoid. Overall, this board is in good shape, No visible battery damage, cleaned, and working (other than the 2 solenoid circuits above). I have tested this board with test roms. All lamps, switches work, all solenoids work minus the issues above. Have tested it with firepower roms but had some issues with MPU. I pulled it because i was replacing the MPU with a combo unit. I am not replacing it myself because i don't have a system to test it. if you want some mosfets, I can include them.
Price: 250 USD
Location: Huntsville, Alabama
End Time: 2025-01-14T17:31:03.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
Brand: Williams
Original/Reproduction: Original
