Quoted from BallyWilliams:
My bally williams cv recently stopped working. Someone online is kindly helping me but they only have limited time.
They think the cpu has stopped working.
They have asked me to check the 5volt power.
I've not down this before and am waiting on a new manual.
I'm sure it's a super noob question which I did google first with no luck.
So where is it and how do i check it ? Please..
(I have a volt meter if that's relevant).
Also is it grounded ? (as I've been shocked before).
There is a 5v test point on the power driver board (the largest board in the back box)
Touch your red multimeter tip to that point, and the black to a ground braid, and check the voltage. Remember you may need to adjust the multimeter settings
Also you can find the manual on Ipdb
Edit: if you were asking how to test 5v on the CPU board, this thread describes it:
This is not a super straight forward thing because you need to figure out the pin leg numbering, make sure you read that part thoroughly.
You may also want to post more details about the problem, as it is likely it is NOT the CPU and likely is something far more simple