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First try doing a reset first. If uou hold down 2,4,an 9 while turning it on it should reset. If not use 2 an 4. This works many times. Also have you tried connecting to the computer with it? I would try the factory rest first.
Sorry but no there is no reset button on any of those radioshack models try going back to the original spot that you had it connected to and see if it works if not then there are 2 thing it could be 1 the power supply went bad second is that when you unpluged it (guessing that you didn't turn off the scanner) that when you unpluged it you sent a surge through the pc board and poped a diode you can send it out to be checked and or repaired by radio shack at any of there locations can handle your needs
I would recomend checking the fuse in the wire or plug you are using, if that is good i would then take a test light and check the power to my leads, most scanners operate on a 12volt source with a small inline fuse, so just check all the voltage and grounds good.
you can push on the display with your finger and see if you notice any change, if so it is probably a bad solder joint or crack in a circuit trace on the printed circuit board. Also with the unit unplugged you can open up the case and check for loose plugs by removeing them and then plugging them back in, then plug the scanner back into the wall outlet and turn it on to see if that helped. The voltages inside are low except where the power cord goes into the unit, at the fuse, and on the primary side of the transformer, so dont touch these areas unless you know what you are doing.
hello my name is kathy and i just had the same problem with mine.I know if you don"t use it very often and shut it off a lot you will loose the program. I first stoped turning it off at all and would just turn the sound all the way down. I went to each one and unlocked them, I had lost over half and the other was locked. I put them back in unlocked the ones the were locked, stoped turning it off 2 years ago and have not had a problem since. I hope you will let me know if this helped. firstname.lastname@example.org
I know that if you turn your scanner off over a few days you can loose your frequency # or it will lock the channels out. if they or l/o just unlock then. I also know that all police and ect. went digital, you would to have a scanner that is digital. When they changed to digital some for the frequency # have changed. I had to get the new ones and put them in.
My first guess would be to take a volt meter, and check the power pack to see if it's putting out the correct DC voltage(or any voltage). Those things are super cheap! Then check the plug in on the scanner to make sure your getting a good connection(might have a broken connection to the circuit board). If those are 2 year old rechargeable batteries, they might be getting close to laying down and dying. Hope this helps,, Mechanic