![]() Everything good so I knew PSU was not the problem,check transistor pack to interface checked good, interface has to have red and green flashing light in order for top box to be communicating with lower cpu slot board. I checked voltages from PSU 5,-12,12,34 volts does not use the 48 volts for the IGT slot. I located a known working board from vendor that they use in fruit machines,it is the same board. I just got the new MPU4 board from England,these boards are getting hard to find due to leaking battery damage on boards. I got an update on the barcrest Run for your money. It can't be loose connection from barcrest unit ,I have had that out and in 10 times and have tested continunity. Upper box doesn't light up even when test button or feature button is pushed.I am sure someone has come across this problem before. Is there such a thing as a secure game chip. Will it help to change to different game and reel chips like SP943 or SP1166. I have changed the CPU board with 3 known good working boards even 1 with the IGT upgrade cap between U21 and cap20. It does have transistor pack 75429500 could it be that. Interface 7542200 only have flashing green light not red and green flashing. ![]() This has a 75511500 16mhz board game chip SP1270 type 37 and SS8662 type 37 reel chip.I can' t get rid of 64-1. Made sure tranformer up in top box had correct output voltage. Took MPU4 barcrest out of topbox and changed leaking battery with the same varta 2.4 battery. Next day turned on 64-1 error code link down top box not communicating. It fired right up and played perfectly with correct payout and top box working. I bought a Barcrest Run for your money machine with no hopper in it code 3200.I took it home put a known working hopper in and turned it on. I have a few questions someone might be able to help.
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