Options for resurrecting VAX 4000/400 and Vaxstation 3200

Peter Coghlan cctalk at beyondthepale.ie
Thu Mar 10 07:23:34 CST 2016

> FWIW, here's a thermography (hope the link works) of the B-cache section  
> of the KA-675 after being powered up for ca. 30 mins:  
> https://www.dropbox.com/s/2nsx1dfngp1jfq5/TH710065.BMP?dl=0
> Note that the rightmost chip just below the CPU heatsink has a pin that's  
> ca. 2 degrees warmer than the others. I don't know if that says anything,  
> but it *is* reproducible. Maybe I should start with that one.

I can't really make it out on the image but if it is just one pin that is
hot, maybe there is nothing more complicated wrong than a bad solder joint
at that pin, particularly if it is a power or ground pin.

Peter Coghlan

More information about the cctech mailing list