Re: 192 Accel repair person needed
I've had these kinds of issues with 192's and 96 i/o's over the years and it's almost always been fixed by taking them apart and cleaning all of the ribbon cables. You have to get into the power supply side to get to the other side of the ribbon cables though.
The only times this didn't work is when a few transistor and resistors had burned up on the AD or DA cards. Which was easy to spot, and obviously a much harder fix
Good luck
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