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Old 13th Sep 2021, 3:53 pm   #2
barrymagrec
Octode
 
Join Date: Dec 2017
Location: Morden, Surrey, UK.
Posts: 1,558
Default Re: Gould MG series SMPSU

I don`t have a circuit but my far from perfect memory suggests that a common cause of smoke on those supplies was the soft start circuit. I seem to remember a wirewound resistor after the mains rectifier was shorted out after a second or so to allow full current to the main reservoir caps. when this didn`t happen for some reason much smoke appeared.
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