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Discharging an erratic mouse

Discussion in 'General Electronics Discussion' started by FuZZ1L0G1C, May 24, 2017.

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  1. FuZZ1L0G1C


    Mar 25, 2014
    If your PS/2, USB, or wireless mouse is misbehaving, try discharging the devices' on-board caps.
    After many frustrating hours of checking the settings in registry, control-panel, browsing PC forums
    and websites, a computer-related forum provided a stupidly-simple cause and solution.
    Apparently, the capacitors build up a residual charge, so affecting the 'clean' signal of a button-press.
    I gather by this they mean that the logic threshold voltage is occasionally crossed?
    The problems included: unwanted selection (dragging) of multiple cells in Excel,
    Rectangle-selecting in graphics apps would fail (unwanted second-click), and so on.
    The fix?
    Switch shut down then switch off computer.
    Unplug mouse.
    Press mouse buttons repeatedly to discharge stray capacitance.
    I tried it and it worked!! :)))))
    ..sometimes the simplest, most obvious solution is overlooked.
  2. Bluejets


    Oct 5, 2014
    Maybe the gremlins moved out as the lights went off.
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