Taking a break from the curve tracer because duty calls! my real job that is! in this video I attempt to repair the switch mode power supply of this Beckman Coulter Optima XE-90 Ultracentrifuge.
Part 2 here    • Beckman Coulter Optima XE-90 Ultracen...  

For reference the power supply make/model is a Huigao-Magnetics AWM700T60V(4A)SF

0:00 – Overview of DNU/problem
8:45 – Removal SMPS and initial test
10:48 – SMPS disassembly/magic smoke residue!
14:00 – Blown component identification
15:30 – Bridge Rectifier heatsink removal
16:30 – Removal of Power Transistors and testing
18:20 – Main PCB voltage testing
30:00 – Testing one of the 60V output modules (fuse blown #1)
33:45 – Testing 60V output module w/ power analyzer (fuse blown #2)
36:12 – Fault discovered on 60V output module
37:44 – Testing of the other output modules
39:00 – Fault discovered on 24V output module!
47:48 – Testing of 24V output module (success!)
52:10 – Testing of 24V and 60V output modules and closing