Following up on this report ALOG89822 and this work permit WP13164 we replaced two Kepco Power Supplies at EX.  These supplies source power to ISC and TCS racks in the EX CER room.

The +/- supplies were still running but the fan on the -18V supply had siezed up, and the supply was overheating.  The +18V supply seemed ok, but when I turned them both off it would not restart.

The +18V supply is now S1201904 has improved fan installed.
The -18V supply is now (no serial number) has improved fan installed.

Both supplies were set back to their original voltage configurations and power sequenced back on, this was completed yesterday afternoon.  The pulled supplies will be upgraded with new fans and placed back into spares inventory.