Hello
I have a pinbot sys 11 mpu which does not want to boot.
What I checked so far:
5v and 12v on mpu
Reset section all transistor(new transistors installed) , resistors good
I went over the reset section with a jumper nothing.
I changed c30.
I checked all 6821 5v by the ic leg
I checked cpu 5v by the leg
I checked all rom 5v by the leg
I checked all the 6821 with the digital multimeter to the ground legs
I checked clock signal with logic tester.
What Im thinking is a wrong rom, pia or cpu but I dont have spare to try.
On the mpu 5v led is shining and when I switch of the power the 3. Led blink a bit.
If somebody has any idea what to check please let me know.
Thanks
Baz
I have a pinbot sys 11 mpu which does not want to boot.
What I checked so far:
5v and 12v on mpu
Reset section all transistor(new transistors installed) , resistors good
I went over the reset section with a jumper nothing.
I changed c30.
I checked all 6821 5v by the ic leg
I checked cpu 5v by the leg
I checked all rom 5v by the leg
I checked all the 6821 with the digital multimeter to the ground legs
I checked clock signal with logic tester.
What Im thinking is a wrong rom, pia or cpu but I dont have spare to try.
On the mpu 5v led is shining and when I switch of the power the 3. Led blink a bit.
If somebody has any idea what to check please let me know.
Thanks
Baz