We had a look at the next set of power supplies that likely have siezed fans and we found the following,

EY - All supplies register less than 80 degrees on input with sufficient air flow, no issues.

EX - VDD-1 LHS U12 24V H1-PCAL registers at 115F in the front, lower in the back.  Low temperature gradient & high temperature vs ambient = bad fan

EX - Remaining supplies regiseter 80 degrees no issues.

CER - C2 U34 RHS 92F front, 93F back, hard to feel air flow ISC-C3 -24V S1201927.  Low temperature gradient & moderate temperature vs ambient = bad fan

CER - C2 U30 RHS 90F front 115F back, low air flow, high heat on front mount, ISC-C2 -18V S1201978.  Moderate temperature gradient & moderate temperature vs ambient = failing fan (not failed yet)

CER - C3 U22 RHS 101F front, 104F back, low air flow, SEI-C4 BSC1, S1201989.  Low temperature graidnet & high temperature vs ambient = bad fan

CER - Remaining supplies regiseter 80 degrees no issues.

There are a few supplies in the CER which are not easily measured in the front.  These supplies have obstructed input vents so it is hard to tell if the fan is bad, or the supply is starved for fresh air.

M. Pirello, F. Mera