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Sorry, but the only mute function is in the external speaker and headphone jacks. Plugging into either one will mute/disconnect the internal speaker. Your scanner is about six years old, so it's possible that the speaker has quit working or that you have a problem with the audio amp. Try connecting either headphones or an external speaker to the appropriate jack. If you get audio through either one then chances are that you internal speaker is shot. No audio at all indicates a circuit problem that needs professional help. You local Radio Shack store can help with either problem. If they don't have the proper speaker in stock they can order one for you, and they can also arrange quality repair of your scanner. CAUTION: If you go the repair route, be sure to get a firm price, not just an estimate before you commit. Repairs can approach or exceed the cost of a comparable new scanner. Good luck and happy scanning.
Sounds like your AC power supply (wall wart) is dead. You can purchase one directly from Radio Shack (they may have to order it) just by telling them it's for the 433. You can also purchase a compatible power supply from UnidenDirect.com (Uniden made the 433 for Radio Shack), or you can find one on eBay. The output specifications for the power supply are 12VDC, 500mA minimum, center (tip) positive.
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You can try a master reset. This will delete any frequencies that are programmed. Here is the way to do a reset...
Turn scanner off. Hold down, 2-9-HOLD (all three keys at once)while turning on the scanner. Keep holding the keys down for about 3 seconds. The word CLEAr should come up on the screen.
The best I can tell you is try readjusting the volume and squelch again. Turn your volume up then adjust the squelch all the way one way and then all the way the other way. At one of the max settings you should get static noise. This should allow you to see if there is any noise coming out of the scanner.
If you get noise then recheck to see that the scanner is programmed correctly. If it has no frequencies or frequencies with no traffic on them, you will not hear them.
If there was no audio with the squelch then you may want to consider that there is a bigger problem. Page 53 in your manual describes how to reset your scanner. This might work as a last ditch effort. You will lose all of your current programming though.
wow thats a great radio, pack it up and send it to me.(just kidding)you might want to contact icom www.icomamerica.com and talk to their techs about this one. congratulations on having one fine radio, it is worth a quality repair,ive wanted to take one of those apart for years lol
Go to the below link for the manual.
That eye symbol refers to stalker mode, which enhances the reception of the radio, see page 23 of the manual. It sounds to me like it's stuck in service mode(SVC) which allows you to scan frequency ranges for police,fire,air, etc.See page 28 of manual for more details.
Hoipe this helps.