Which wires have disconnected?
If it's like the tx1000-ish pad I have, and the sensor-wires are what you're referring to, just reconnect one wire to one of the two metal connector plates and the other wire to the other connecter plates. (the plates, once again supposing the sensor is the same, are comb-shaped metal bits that alternate lines, but don't touch.)
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I used to be active here lol