Gottlieb Hollywood Heat System 80B MPU Freezes at Game Start
Summary
Hibler repairs a Gottlieb Hollywood Heat MPU freeze: corrosion cleanup, trace rebuilds, new reset circuit, and a trough switch fix.
Chris Hibler, a pinball board repair technician, documents repairing a Gottlieb Hollywood Heat System 80B MPU that froze at game start. He cleaned alkaline corrosion, rebuilt damaged traces, replaced the reset generator with an aftermarket daughter card, and found the freeze traced to switch 76 in the trough, which was fixed by gapping the leaf switch. The video is a hands-on repair walkthrough rather than industry news.
Gottlieb Hollywood Heat System 80B MPU Freezes at Game Start The root cause of this problem will be found to be a faulty switch at the trough ball release gate. The repairs made to this board will enable reliable operation for many years.
Comments