My dr who mini play doesn't move in play or test mode. I get voltage on the motor on all the ccw and cw tests so I believe its the motor or gearbox or both. I can move the miniplayfield up and down by hand with some strength, does this mean the gearbox is stuffed. If it isn't I'ld like to buy a new 20V DC motor online but I have no idea of the RPM, torque or current. I emailed twice MultiProducts that built the gearboxes for Bally/Williams and they will not send me a reply (probably because I'am not a business). Also how do I unscrew the motor from the gearbox, its not as simple as my Indiana jones. Any info will be much appreciated.

I started with the bi directional board and checked with my DMM and get +20v to -20v from the motor jumper with all cw & ccw tests as with the pins on the motor itself.

Its the gearbox i'm most worried about, they cost over $200 here in Aus. I read somewhere that if I can move the cam wheel, which happens when I move the mpf up of down by hand (I haven't taken the mpf out yet), then my gearbox is stuffed. I would like a second opinion.