Can you bypass an on/off varible resistor, so that the device is permanently on?

Question by Paul B: Can you bypass an on/off varible resistor, so that the device is permanently on?
My Elderly neughbour asked me to look at his Uniden scanner, on a closer inspection, I found that the varible resistor which turned the device on and off, had broken. The contacts that joined the resistor to the circuit board had snapped right off the resistor. Volume isn’t really an issue, as long as it it loud enough to be heard. I’m looking to solder, to bypass these contacts.

Best answer:

Answer by classicsat
Just jumper the terminals from the control to where they go in the circuit.

You still want the control, to turn it off and adjust volume.

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One comment

  1. What classics said. Fix the broken connection. Don’t “bypass” anything.

    B.T.W., The thing that you are calling a “variable resistor” probably is two components in one package; a switch and a potentiometer. The switch probably interrupts the power to the device, while the potentiometer acts as a volume control.

    A potentiometer is more than just a variable resistor. Some people like to think of it as a variable voltage divider. You can read more about it on wikipedia.

    http://en.wikipedia.org/wiki/Potentiometer#Theory_of_operation
    http://en.wikipedia.org/wiki/Voltage_divider

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