MPU4 Boot fail.

[@TheMadmagik]

remove all the plugs except power and alpha and refire.

[@Prototypeuk]

Thank you I will try that. It only seems to do it occasionally on first power on. After another couple of power cycles it boots fine.

[@TheMadmagik]

@@Prototypeuk ah if thats the case its likely either fault in the reset circuit or a bad capacitor in the power supply. It sounds with its behaviour its having problems with cold starting so what you could try is freeze spray on the transistors associated with reset . Those are T40 to 44.

[@Prototypeuk]

@@TheMadmagik Well it did it after closing the door when warm and now it has stopped accepting any coins. I tried another Coin Mech but nothing. Could this be the MPU4 failing if it won't accept coins now? I have got an external battery fitted btw.

[@TheMadmagik]

@@Prototypeuk youve got a problem in the switch matrix. swap the board with another one first off make sure its not a loom fault.

[@Prototypeuk]

@@TheMadmagik Sorry for my lack of knowledge but is the Switch Matrix part of the MPU4 board or a separate board? I really appreciate you help here thank you :)