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July 11, 2020, 10:02:44 10:02


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Author Topic: Please Help - iCharger 3010B - Micro controlled charger not react to buttons  (Read 1734 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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Kombinator
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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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