Re: Center Pin Polarity Check?
Grab a multimeter. Put it in continuity mode. Put one probe on the negative in the battery compartment and touch the outside of the barrel connector with your other probe. if there's continuity, you know the outside is negative and center is positive.
If needed, plug one of your jacks into the connector to make it easier to connect the probe of your multimeter to the exterior of the connector of your machine.
A usb cable is cheap, often less than 1$. plug cable in the usb charger, cut the connector on the other end. you'll have 2 or 4 wires inside, ground (black usually), voltage (red usually) and optionally data wires (usually white and green)
worse case scenario , you can grab a couple of D batteries and either solder or tape (with some good electrical tape) the positive and negative wires, each to one battery .. then put the batteries in the compartment ....
your battery compartment is most likely this :
negative inside device --- [ - +] [ - +] [ - +] [ - +] --- positive inside device
so you only need to have 2 batteries inside or something that would press the wires onto the terminals, one on each edge of the compartment, with the wires connected to the metal that's touching the terminals inside the compartment.
the top lid just makes the connections between the batteries, and if you connect wires directly you don't care about it, no need to have 4 batteries.
apologies for the horrible typing, my main keyboard just died on me today and this is a horrible 3$ keyboard with crappy keys, have to punch the keys to work, so i may miss some letters and can't be bothered with uppercase.
Originally posted by vestaviascott
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If needed, plug one of your jacks into the connector to make it easier to connect the probe of your multimeter to the exterior of the connector of your machine.
Originally posted by vestaviascott
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worse case scenario , you can grab a couple of D batteries and either solder or tape (with some good electrical tape) the positive and negative wires, each to one battery .. then put the batteries in the compartment ....
your battery compartment is most likely this :
negative inside device --- [ - +] [ - +] [ - +] [ - +] --- positive inside device
so you only need to have 2 batteries inside or something that would press the wires onto the terminals, one on each edge of the compartment, with the wires connected to the metal that's touching the terminals inside the compartment.
the top lid just makes the connections between the batteries, and if you connect wires directly you don't care about it, no need to have 4 batteries.
apologies for the horrible typing, my main keyboard just died on me today and this is a horrible 3$ keyboard with crappy keys, have to punch the keys to work, so i may miss some letters and can't be bothered with uppercase.
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