Quoted from Matthew2015:the voltages from the power board seem normal , it the cpu mpu that i cant find the problem with.
i tried it with the driver board removed and it still does not blink . i think its all the rusted ic chips and corroded solder joints on the board that are causing the problem but i just don't have the skills to replace ic chips.
i think i going to get a new mpu like the rottendog mpu 327. is it any good? been trying to find one in stock.
Don’t get the rottendog. Although I have 3 machines running them and they have been working for years with no problems there are a few glitches and missing speech. With no support now I wouldn’t recommend. I can 100% recommend pinballpcb sound/speech boards and their mpu is probably great too.