Reviving an old thread but this is exactly the machine I'm struggling with. I bought a Sega Console. Condition was non-working working and locked with no keys. Was able to get the upper cabinet open, clear out some scattered coins and get it working for basic functions at least. After forcing some winning combinations, it didn't appear to pay out on the big jackpots, but I was able to empty the coin tube paying out small wins.
I eventually got the lower cabinet open and filled the coin tube from the back and tried it again. Now the machine showed " TILT" on the top box and I could pull the handle repeatedly, spinning the wheels without putting any coins in. It would no longer pay out even when forced to stop on a winning combinations. The machine stayed like this for a while as I tried a variety of things to fix it . Eventually it hit a big jackpot and actually paid out and that seemed to fix it for a few cycles. Now I could only pull the handle after putting in coins. But this only lasted for a couple of cycles, and now it is locked up. No response to dropping a coin, can't pull the handle and spin the wheels.
This machine has a lot of electro-mechanical features that I can't find any information about. Any advice?