He there, I am not sure about those new fancy pinball/computers, I would say NO.
I do however keep several pinball machines ( EM's mind you ) in my garage over the winter, when it is not freezing, I even fire them up and give them a play. i will work on them in the winter too, as long as it is not to Cold.

I have done this for several years now, and have had no problems. Keep in mind that I don't keep my "A" list EM's out there, only my group of odd ball games, the fun little novelties.
If I owned anything with Circuit boards or anything of significant value, I would NOT keep it in the garage.

2c from a Dino

Brian Lenker
Madison Hts, MI
586-344-0721