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Sonsivri > Electronics > Hardware and Tools (Moderator: bbarney) > Please Help - iCharger 3010B - Micro controlled charger not react to buttons
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Author Topic: Please Help - iCharger 3010B - Micro controlled charger not react to buttons  (Read 8467 times)
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sphinx
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« Reply #25 on: June 11, 2020, 06:18:51 18:18 »
To me that looks a bit of not so good soldering, but it is not what makes me wondering. It is the white/grey residue on the board could, that be from water/moisture or is it perhaps
from the cleaning of the board when it was made. From my experience moisture over time can make things go bad if the board is not protected from corrosion.
just my input.
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laws of physics are not laws at all, just assumptions and formulas that work as long as we don't figure something new that wrecks the calculations. the infinite onion try to peel that one
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« Reply #26 on: June 16, 2020, 03:51:55 03:51 »
Try forcibly raising the pin potential of button 4 with a limiting resistor to 20mA (+ -> 250 ohm-> pin controller).
Good luck.
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