Question about Radio Shack Pro-95 Handheld Scanner

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Pro-95 Internal Speaker not working. External OK

I recently switched the boards from one of my Pro-95 to another plastic case. I put it all back together nicely, but the speaker does not work. All is connected as it should be. No loose wires anywhere. I took the case from one Pro that worked great but the case had been run over and switched it with my other Pro that worked great except for "Trunking". Oddly enough, the speaker no longer works on either one. I don't get it? Help!
Ed

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One way to test the speaker, Unsolder 1 of the wires to the speaker terminal, take an ohmmeter and measure the + and - leads of the speaker . if the speaker reads 8 to 32 ohms it is probably not the speaker, if the speaker measures less than 2 ohms or infinity then it is shorted or blown with an open connection. simply replace the speaker with a comparable size, wattage and impedance. I had a similar problem with my pro95, the speaker simply was bad, I replaced it and it was fine.
Let me know if you have any questions.. Bob.

Posted on Apr 07, 2009

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Odd, indeed. I imagine that you have the speaker plugged into the mainboard, so the problem may be either the speaker itself or the external speaker jack, as it's possible a connection between the jack & the PC board got damaged when you disassembled & reassembled the scanner. You can test the speaker by unplugging it from the board & checking it with an ohmmeter, it should read low resistance (@ 8 ohms). You can also use a continuity tester to ascertain that the speaker isn't an open circuit.

Posted on Sep 26, 2008

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