Ok, I always wind up scratching my head with faults that are intermittent. During game play, Dr Who will seam fine for a while, then all of a sudden some of the lamps become overly bright, the DMD appears distorted and too bright, and a flipper becomes locked on while the other is nonresponsive...prompting me to quickly power off the machine. Once powered back on, the machine seams fine for a while, and then repeats the odd behavior...but not always the same flipper will be locked on or same set of lamps overly bright. I'm wondering if an intermittent voltage drop/spike could be the culprit. Any suggestions on how to find the root cause? Thanks!