Q06H CPU Failure

[collinsd70 30]

Bought a new Q33B rack today and went to test operation with one of my spare CPUs. Unfortunatley it seems my CPU no longer works (I tested the rack with another CPU after and all OK).

The CPU was working fine last time I used it. Has anyone attempted to repair/ fault find on these units? I think theres is a problem with the main 5v circuit as there is no indication on the unit at all (no lights etc). 

[Crossbow 295]

Sounds like the plug on the back of the CPU could be damaged.  Look for bent or broken pins.  if another CPU worked in the same backplane with the same power supply that would be my first test.

[collinsd70 30]

Cheers crossbow...ill have a look

[collinsd70 30]

Just checked the bus pins...they all look perfectly fine on the CPU 🤔.

 

Anyone know if there is a mains fuse that can be checked/ replaced?

[Crossbow 295]

Don't think there is a fuse in the CPU, it would be in the power supply I would expect.