Question about Maxon HCB-10C CB Radio

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My HCB 10 transmits a carrier but has no audio. Reciever is fine. Where do I get a schematic?

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Hello there ,a very simple solution to this problem remove rear covering and circuit board you will notice the mic anylise it for wire breakage or dry solder joint iff you have a replacement mic you can replace it ,if this fails its more than likely your audio chip has given up ,its best to leave it to someone with expertise goodluck ei5glb

Posted on Apr 07, 2011

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Ah! these and the cobra 2000 had the same board and same problems--

Some will have no transmit audio (check or sub to make sure microphone not the problem) and others no receive audio.

If circuit problem both are caused by a filter cap that opens.

Usually this occurs when radio has not been used for a long period of time.

If you have a schematic for the radio (mine are all out of reach) you will find in the audio circuit a cap (I think it is 220 uf at 10 volts) right near where the volume is controlled that is bad.

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