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Advices to repair an overpowered Orangepi PC

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Published in 2021-8-3 17:40:07 | Show all floors |Read mode
Hi everyone,

I manage to repair an old orangepi PC which I 've use for a student project few years ago.
It has been plugged with an PC charger (20v) and made some sparks ...

So now there is a short circuit between gnd and 5v ( not with the 3.3v),

I tried to find in the datasheet and shematics of Opi pc some chip which manage manage power and didn't find clues.
(https://drive.google.com/drive/folders/15mEts8a25LsMFYWhJA54x8AtQ-DWJYqf)

I tried to change with sucess the D36 diode (1N5819) which appears shortcircuited but that was not that.

I search on the power section but I imagine if the problem is outthere, it will be difficult to repair..

Someone has ever be confronted with this type of power issue ?

Thanks for any help !

Natacha


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