Scanner acts like it doent have squelch control

It would be helpful for someone to help you if you shared the exact model of the scanner. Most scanners and radios have a squelch knob. Squelch is basically the static you're probably talking about. Again depending on what scanner it is exactly unplugging it may or may not have deleted the programming and settings if it's programmable. If it's not programmable unplugging it definitely did not clear any memory, settings, or programming. I'm guessing it was also moved and someone turned the squelch knob either accidentally or messing with it. Find and turn the squelch knob if it has one until the static goes away and it should start scanning again.

check squelch

On all channels, or on one channel ? Some channels are "birdie" channels, check your user manual. Others are problem channels receiving false signals from computers, monitors, receivers, internet equipment, FAX machines, etc. If your in conventional mode, if in Digital mode the squelch is set by the processor, and I don't believe the squelch has any effect in that mode.

The squelch control gets rid of the hissing on a blank channel. Finda blank channel, turn up the squelch control until the hissing stops. The scanner should then scan the channels and stop on a busy one.

Take the case apart and clean the Volume and Squelch with Electronic Contact Cleaner until the knobs move really easy. The Potentiometers should now be clean and the Scanner should work as it should now.

Plug the AC adapter into the back of the scanner and into a wall electrical outlet. Screw the antenna into the receptacle on the back of the scanner (extend the antenna to full length for best reception).

2 Set the squelch level to allow signals to be heard by turning the squelch knob counterclockwise. Rotate the volume knob clockwise until you hear static. Slowly turn the squelch knob clockwise until the static noise disappears.

3 Start programming frequencies into the scanner by pressing the "Manual" button.

4 Press the up arrow or down arrow key until the channel you wish to program is visible on the display.

5 Use the numbers on the keypad to enter the frequency for the local transmitter you wish to receive.

6 Press the "E" key to complete the process of entering the frequency.

7 Repeat steps 3 through 6 for each additional frequency you wish to monitor.

8 Press the "Scan" key to start the scanning process. The scanner stops on a channel when it detects a signal strong enough to hear over the squelch setting. Two seconds after the signal stops, the scanning process resumes.

Rotate the knob counter clockwise to close the squelch. If this does not work, remove the knob by pulling it off gently and make sure the "pot" is turning with the knob. Verify the knob and "pot" are not damaged.

If the weather band is working, the scanner should be working. To verify operation:

- Move the MODE switch to "Scanner" and power the unit ON.
- Press the SVC button (chrome button below display).
- Press POL (chrome button below display).
- Turn the SQUELCH knob towards the left until scanning stops and you hear a hissing noise.
- Turn the SQUELCH knob towards the right slowly until scanning resumes.

If the scanner stops on anything - even noise, it's working.

To Program:

- Slide the MODE key to "Scanner."
- Power the unit ON
- Turn the SQUELCH knob to the left until you hear a hissing noise, then turn it the right - slowly - until scanning resumes.
- Press HOLD.
- Press E (PGM).
- Press 0, 1.
- Press HOLD.
- Enter your first frequency, including the decimal point (EX: 156.055).
- Press the E (PGM) key.
- Press the UP arrow (above the SCAN key). Scanner will move to channel 02.
- Enter your second frequency, including the decimal point.
- Press the E (PGM) key.

You should now have two frequencies programmed. Press the SCAN key . . .

If it still will not accept programming, let me know.

BillB

trace back from the squelch control to the first and second transistors and you will find one of them is bad, or the components connected to them, one transistor acts as a switch when a voltage from the automatic gain control turns the transistor on via the gate terminal.

provided you turned the squelch know and it didnt help, i would trace back from the squelch control to the first and second transistor you come to and that should be the squelch circuit. if you know how to check them with an ohm meter you can find out which one it is, if not you can just replace them both for under 5 bucks.