Bricktop

Hi all, great site. I've been lurking around a while but not posted until today.

The question is ??

My local Bingo club allows players to reserve the machine they are playing on until the following morning. Many people do this as they have poured 100's in and want to get some of it back.

Now the tricky bit...... after the bingo session has finished or more likely during the following morning, is it possible that the machines rom would have been reset by the engineer, effectively cancelling the previous days efforts?
To my knowledge the club insists no credits are left in the machines ! I was thinking of taking a digi camera to photograph the reel positions in the evening so I could check them in the morning.
I have very good cause to suspect the above, plus a another scam in operation which I can't go into on-line.

Sorry for the long 1st question. Especially if it's all crap
Cheers, Keith.