Any Idea on how to get parts...It burned two resistors (R430 R316) on the 'video board'; the one connected to the ray tube. And does anyone know how much voltage is supposed to be at the connector (the fuse didn't blow fast enough)
I work as a SMT tech so electrical stuff isn't a problem...I just can't get the schematics for it, if I had them I might be able to troubleshoot/fix it..

Had a KM3 that liked to burn out the displays.

Fault was usually in the HF caps - they tended to fail. After replacing them about 4x the driver board died from a different cause and I stole the graphics CRT and swapped it onto the program side.

Over time the same sort of problems eventually killed that display too.

Memory board had allready gone bad so machine could not store programs - only run what was uploaded while power was on.

So its a Zombie now - no screens. But if you power it up it still jogs.

I think I have it narrowed down to CRT controller board, I got a new Crt driver board for free,now I just need the graphics crt driver board. I still have to hunt for "inexspensive" parts...I got the mill For $200, powered up with only the crt failure, so I'm trying to keep repairs cheap.