Per WP12650 we investigated and replaced two supplies with locked up cooling fans at EY.  These supplies service power to the field rack R1 and by extension, the neighboring SUS rack.

We noted the -18V supply in slot U26 on VDC-C1 was running very hot, and when we looked the fan was visibly siezed up.  Continuing down the rack, U22 +24V was also siezed up.  We replaced both failed supplies with refurbished supplies with upgraded fans.  We also lubricated the opposing supplies' fan shafts, +18V and -24V respectively with a drop of lubricant each.

U26L S1203041 +18V was lubricated.
U26R S1201988 -18V was replaced.
U22L S1201929 +24V was replaced.
U22R S1300297 -24V was lubracted.

F. Clara
J. Figueroa
M. Pirello