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Hi all, Been spending some time on some machines which I haven't looked at for years! I'm on this crystal mpu4 at the moment and is working nicely, but the issue I am having is when you have over a tenner in the bank and collect it tells you that the machine needs topping up. I assume it must be a dip switch setting, and I have tried different combo's without any joy, I think the enigma code was probably easier 🤔 I have looked through the documents with no joy and even other crystal machines to see if there is any settings, but no joy 😢 Does anyone have any information about this at all please? It would be appreciated as always.

You never know Martin! Not my normal purchase, in fact it’s the newest one in my collection 😂😂

Could be Ron, but pays fine below a tenner, saying that, it hasn’t paid out on pound coins, so that will be my next port of call 👍👍

Surely it’s the tube sensor?