JoeB1355
Well-known member
Missile Command -- only goes down
I trying to fix a Missile Command PCB.
It works for the most part. It boots, passes self test, and trackball left and right good.
but
up goes down and down goes down.
The TB is good I tested the cabinet with a known good board
I think some signal needs to be inverted for direction -- so I must have a bad chip somewhere
I trying to fix a Missile Command PCB.
It works for the most part. It boots, passes self test, and trackball left and right good.
but
up goes down and down goes down.
The TB is good I tested the cabinet with a known good board
I think some signal needs to be inverted for direction -- so I must have a bad chip somewhere
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