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I've just picked up a mpu4 line up. Its 5p on £4 or £2. But does anyone know the dip to change it. It's currently on £4 Jackpot. But I feel it will be better on £2 being 5p a go. I was expecting a simple switch in the back but not seen one 😊

Hello everybody I have 2 Novomatic money players older year (1983. I guess the whole money player was a "JPM" box which was taken over by Novomatic. Now I have the following problem with one: The ad for the bonus and the inserted credit are not displayed correctly! Either the number 0 or small dots are shown on the display. You can play, but the Thrown coins are not displayed as well as the profit achieved. I used the other program card once, so that works. The error must therefore be on the program card. I suspect a defective IC which is faulty. But unfortunately I do not know which one it could be? Ask: Which IC (driver for 7-segment display) could it be? I have all built ICs in the house could all swap, but makes little sense and the risk is "still" too big. Have two videos and added you a few pictures of the program card. Would be great for a few tips, which would bring the thing back to work. Thanks in advance !! Greetings Ruedi https://youtu.be/qTbyOWgK-t8 https://youtu.be/EVsjUwT_z7Y

Second that .worth a go if.you have the time rich !

come on cyber bob you can do this fault

Hello everybody Found a mistake. Defective IC SN74LS12N had to be replaced. Works again perfectly 😀😀😀