I have fixed a couple of issues with my recently acquired Bride Of Pinbot game and I have another that is stumping me. I can not get the helmet lights to work. I have tried checking and reseating all related connectors. I understand that they controlled by a couple of solenoid transistors (25 & 26) and are routed through a separate chase light board under the playfield. I have studied the Operations Manual and found a couple of mistakes in the book including wire color and connector information. I have tried checking the voltages on the chase light board but I am not sure what values I should have specifically on the data port and clock pins. I am not having any other lighting problems. Thanks for your time.

I didn't know this connector was in the circuit I was working on. It is the general illumination 02 WHT-ORG wire for the helmet lights. I took it apart, inspected it, and reconnected it. The lights are still not working. Thanks for the info and great pics.

I also noticed in your pictures there appears to be a stainless metal case around the head assembly on the bottom of the playfield. My machine doesn't have this on it.

I took a chance and purchased a used chase light board to try and fix the helmet lights. It didn't change anything. I wish I knew what voltages to look for to help isolate the problem. I have studied the operations manual and triple checked all of the connectors related to this circuit. I would love to get them working.

Thought I should post an update in case this could help someone else. I started working on this again and found a video of a guy showing the proper readings from the clock and data inputs to the chase light board using a logic probe. I bought a cheap probe and found that the power driver board wasn't putting out any signal. on J122. The other 2 wires from this connector control clockwise and counter clockwise information to the head motor relay board. I didn't even know the face was supposed to turn both ways. Lesson learned: if you are going to repair something you need to read the operations manual. After the third time through, I was more confident in trouble shooting and able to isolate circuits and components. I double checked the connector, pins, and power driver board at J122 and then I ordered a Rottendog replacement board. It wasn't cheap but it is was great to finally get it fixed. Now the helmet lights work and the head motor rotates in both directions. Thanks to everyone for the helpful information.