Hi,guys my Dirty Harry pin was playing nice and good,but after a blackout the mpu won't boot,power driver board is ok.
What I need to check first in the mpu board
You need 5v on both the driver and MPU. Did you measure it there? Also, reseat the ribbon cable between the boards and see if that helps.
Yes I have 5 volts entering in the mpu
The upper light in the mpu is lit,the other two not
Thanks rob for your reply,I disconnected everything goin to mpu except the power to mpu,j210 still no blinking light,what next
Try removing the MPU and lay it down flat and push down on all the socketed chips, especially the U9 ASIC chip.
If with only J210 connected to the CPU, you still get no rapid flashing of the center diagnostics LED, then the issue is on the CPU. It's not booting. This is assuming of course your 5V and 12V from the driver board are good.
Check the 5V and 12V from the driver board. Or swap in a known good CPU (just J210 needs to be connected) to see if it boots.
Quality Board Work - In Home Service
borygard at gmail dot com
Yes Rob,I have the 12v and 5v from power driver,also swapped another good power driver with same result.Just the upper CPU led is on,so the problem is in the CPU board,also I don't have nothing in playfield gi
Yes I know,I mean when I have everything plugged in the CPU.No gi or backbox light
You pressed firmly on the U9 ASIC chip and have the same no boot results?
Please post a picture of the MPU board.
I am afraid your MPU has too much corrosion, as I hoped was not the case. Currently it is best to buy a Rottendog MPU and a PLLC chip puller to move over the U9 ASIC, game ROM, security chip, and CPU chip and purchase NVRAM for the new board.
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