I did pull and replace the CPU, Memory and VCB02
modules,
but the result is the same. The system did work fine recently, so I
assume that the CSR/Vectors are ok on the cards. I don't have
the manuals for everything, but maybe bitsavers does.
Reading this, I wonder, could the power supply be overloaded?
I do not know how much current the VCB02 modules draw ...
Just a thought. I know the QDA50 is a power hog!
- Henk, PA8PDP