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2 x Hypex SMPS1200 dead following power cut
2 x Hypex SMPS1200 dead following power cut
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Old 28th July 2021, 12:41 PM   #11
landmarker is offline landmarker  Europe
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Join Date: Jan 2016
Location: FR/UK
After changing both 220uf (as recommended by Hypex), both modules are working again! 400+ euro saved...

Thanks again for pointers and recommendations.

In case anyone has this issue in the future, the capacitors are C38 & C39, 220uf 35v. The old ones measure fine in terms of capacitance and ESR, but they must have been leaky or otherwise misbehaving at voltage.

I replaced with 2 x 220uf 50v, I had to cut out and remove one of the big filter caps to access one of them.
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Old 28th July 2021, 03:01 PM   #12
Silvi is offline Silvi  Malta
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Join Date: Mar 2016
I am glad you found the problem
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Old 28th July 2021, 03:41 PM   #13
NareshBrd is offline NareshBrd  India
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Join Date: Oct 2017
Location: Baroda, Gujarat, India
It must be a design fault or known bad batch from supplier.
Good you are back in business.
This time use with proper ventilation, switch off when not in use.
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