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Оригинальный сообщение: Primus ,

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Hi Rufus :) If that pic is the logic board in current state, the cap that you have replaced looks like it is burned as well. As for U3, I was unable to find you a schematic referencing the pins. However, I did come across this:

http://www.acidmods.com/forum/index.php?topic=43204.0

Which describes U3 as follows - U3 is for the 3.3v source that powers pretty much everything on the MCU board. It's TP9 on the MCU board.

You might see if any of the pins on U3 are loose or damaged, but otherwise I would say your problem to start lies in that cap.

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