Tektronix PS2521G triple power supply repair and upgrade

My great Tektronix PS2521G is suddenly blowing many of its fuses. We take advantage of the repair to upgrade a few things too.

Update: viewer Jim Flanagan provided the ultimate solution for the "on" LED replacement: don't replace it. Instead, make it blink! He reversed engineered the firmware, then modified it to make the LED blink when the power supply is on. You'll need to burn a new 32k EPROM to replace the original one. Works wonders, I have now done the upgrade on both of my power supplies. Details on my website: https://www.curiousmarc.com/instruments/tek-ps2521g-power-supply

24V 80mm low-er noise fan: https://www.digikey.com/en/products/detail/delta-electronics/AFB0824L-F00/9478117

Goodie goodie 470uF 35V Rubicon caps: https://www.digikey.com/en/products/detail/rubycon/35ZLH470MEFC10X16/3563723

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00:00 MyTek PS2521G is broken
01:32 Inside the PS2521G, blown fuses
03:16 Schematics
04:08 Measuring the suspect board
05:48 Finding the bad components
07:41 Putting the good cap back in - still no good!
09:22 Trying with new caps for both - better
10:10 Repairing the other half of the supply
12:17 Repaired!
14:00 New high reliability caps from Digikey
15:29 Green and yellow LED trials
17:14 Low noise fan upgrade
18:34 Using solder seal splices
20:46 New yellow LED replacement - no bueno!
21:53 Final solution, printed frame
22:14 Trying it on the Apollo comms link!