RM Laptop PSU

Discussion in 'Home Networking' started by Bernard Peek, Feb 13, 2008.

  1. Bernard Peek

    Bernard Peek Guest

    I've just acquired a second-hand Research Machines CY25 laptop with a
    duff external power-supply. The polarity isn't documented on the box or
    in the manual. Can anyone confirm whether the polarity is the same as is
    used by Toshiba laptops. I know the voltage is the same.
    Bernard Peek, Feb 13, 2008
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  2. Bernard Peek

    linker3000 Guest

    Why not cut off the DC connector with about 4 inches of cable, strip off
    the outer insulation and do a colour/continuity check between the
    stripped cable ends and the plug?
    linker3000, Feb 14, 2008
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  3. Bernard Peek

    Clint Sharp Guest

    Why not ask RM? Alternatively, if the laptop has any ports on it
    (serial, parallel, USB etc.) the earth connection on those will be
    connected to the negative connection on the power supply socket and also
    the negative battery connection.
    Clint Sharp, Feb 14, 2008
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