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Power Supply Mod

Creator: D. Aubry
Date: 2000-07-16
Rating: 
 

Introduction

I had to "dispose" a few big switches of my employer recently. On of them stood out by it's unpleasant burning smell when powered up, as a modder it's my duty to find out where that came from!

aubrypsu1.jpgYou can see clearly that something's wrong with this power supply. It's amazing that it still works. That resistor is no longer connected to the circuit paths!
aubrypsu2.jpgThe resistor already falls off when looking at it
aubrypsu3.jpgSurprisingly no other parts have been damaged
aubrypsu4.jpgThis needs some creativity :-) The surrounding circuit paths had to be repaired
aubrypsu5.jpgDON'T handle 250VDC like this!
aubrypsu6.jpgA test run without severe problems and for security reasons only with a fan connected
aubrypsu7.jpgAfter assembling

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