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My maxon cb will transmit and recieve but I cant hear anything. I have already tried an ext speaker with no change. I have tried the squelch and rf gain and volume . the display says I am recieving a strong signal but channels 1 through 40 are completly silent and the noaa weather channels are as well( I got static on 8 channels and weather on the other 2 before)just flat out no audio. any ideas? possible fix?
Take the cover off, hook the antenna up and turn the unit on. Take a pencil with the eraser end and press around on the circuit board, look for cold solder joints....hope this helps..
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I have one that doesn't transmit between the two we could have one radio but who's.. you should try to tune the receive cans but with no schematic you can't because if you turn the wrong one you could kill the radio. I would buy another radio like a radio shack trc - 503 or something in that line if you're into small radio's. Some of them can be opened up to talk like a big radio.
Does it Transmit?? Does meter show transmit?? Can you hear?? If its hearing an transmit gone..it could be Microphone, or speaker, or other more serious problems inside circuit. Change mics and hook up Ext Spkr. If that does not do it, then radio is gone. Buy new radio instead of repairs.
If you take your external speaker and plug it into your PA jack in the back and key up your mic do you hear anything. If so then its not your IC chip if not its your IC chip and it will need to be replaced.
I am not completely sure i understand whats going on. it seems like it could be a few things because of different parts of the question.
With my CB everyone else can hear me and the signal transmits fine Good! I have tested to see that my CB is picking up the signal how? A meter on your radio should either light up or a needle should swing if you are receiving. their voices don't play through my mic of my PA A Mic is a microphone, i think you mean speaker. Ok this may be the cause of the problem.... Try a couple of these. First, unplug the PA Speaker, this simple act should make you to be able to hear the incoming signal. Make sure the CB is on AM or CB not PA If you can not hear the speaker may be busted or an internal part may be blown. (needing the expertise of a required technician) If you can here when you do this make sure the speaker is working by plugging it into a computer. (mp3 players will barely put out enough power to make a sound audible) if this works, make sure you plug it into EXT not PA on the back of the radio.
one more thing to check. i dont know what radio you have but try turning it untill you hear static. if its all the way the other way you may not hear anything, also turn up any RX or rec. knobs.
i have limited knowledge about whats going on, but i hope this will help fixya
Is the squelch off? Is there even a crackle from the speaker? Does it appear to go into transmit?
If you have a friend can listen in while you try transmitting, get him to let you know if voice can be heard, or a carrier appears (on AM). If TX OK, try sideband, if OK, look for faulty speaker/ socket/ wiring. If no audio on TX, suspect the audio amp is bad.
I'm not sure about your particular model but many CB radios use the microphone push-to-talk switch to kill the speaker while the radio is transmitting. If you don't have the correct microphone or if the cord has a broken wire it can cause the radio to have no sound. Another possibility is that the speaker is bad. There is probably an external speaker jack on the back of the radio. You could try plugging a different speaker or even an earphone in the jack to see if you get sound there.
You might have a loose wire in the mic plug, also in the plug itself there are 4 holes for 4 pins in the radio to fit into, these 4 holes have tiny metal sleeves in them to make contact with the radio pins. these sleeves are split and you can take a tiny jewlers screwdriver and slightly close up these sleeves this causes them to fit tighter on the radio pins creating a better connection. these sleeves WILL over time spread out causing the radio to lose a function such as receive or transmit I have encountered this problem several times in the past at my shop. Good luck on your problem.
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