Rookie Getaway Teardown, Fixup, Rebuild

I was messing with the Mars light and unsurprisingly, the motor is toast and won't move w/o a little assistance. I was mostly testing on the bench with variable ac power supply but after swapping in donor, found loose connection J123-4 blue/orange on driver board as well (fixed that).

The manual has the wrong voltages documented but this diagram from pinside thread clears it up.
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While I had my donor out, I wanted to document the motor hack someone did on it. You can see my project getaway lamp on left that has lots of pitting from rust. Anyway, the replacement motor on right is a 12v DC motor. WMS went through a lot of effort to take dc power convert back to AC and add resistors to further drop voltage down for stock motor. This one needs it converted back to DC which is done with the diode wired to unused pin on J1-3 and then J1 and J2 are basically swapped in cabinet with 16v coming into J2. This puts @ -8Vdc to the motor which seems to work fine; even in the game there is only about 7.5vac at lamp. In game it might be different or the voltage drop is due to load of motor and lamp.

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Should have filmed my motor replacement journey but will try to document as best I can.
After seeing replacement motor was @ $125, https://www.marcospecialties.com/pinball-parts/14-7971?
I dug some and found this video

so ordered a couple of replacement motors; promptly tore one apart and likely broke it. Also not sure how long this will last with those plastic gears.
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went ahead and ground down the shaft (shown in video) so it would fit in stock lamp collar.
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put everything back and it worked but made a hell of a racket as the motor shaft was a little loose. Again should have filmed that part

Not knowing what I messed up, I decided to drill out collar vs grinding down shaft. 9/32 drill bit was the correct size but damn near broke collar free from the plate.
End result for $26 ($13 motor x 2) vs $125. Oh yea, this is quiet :)

 
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