carry on driver

Hi all!
I picked up my first ever fruit machine yesterday - a rauher splendid barcrest super blackjack club. I was assured it was working, so0me and the good lady duely stuffed it into my elderly vauxhall and gingerly drove home. After installing it (by which I mean plugging it in) I tried to start it up, but was greeted with a sound like a helecopter, and "£0" strobing on the "reserve" display.
I deceided this probably meant it was hungry, so I've manually (I don't have a refill key) filled it with £1s and 20ps. Now when I turn it on, there's several more strobing lights, and the cash drop solenoids are chattering in a rather alarming fashion. Also, the power led on the mpu4 unit is strobing at the same rate as everything else.
I know nothing about these machines, but I'm fairly electronically minded, so if anyone could please shed some light on the possible cause and best course of action, I'm fairly confident I could get the beast going.
Thanks in advance!