20 Most Recent Uniden Bearcat Pro PC68XL 40-Channels Base CB Radio - Page 9 Questions & Answers

check the connections internally, some of the wires may be loose and causes that problem.

Hi u don't mention what diode :::::::; there are power diode's signal diode's plus a lot more..cheers

Yes return it.

While you could solder something up, why not just get an adapter to take the single 3.5mm 3 conductor to two 3.5 plugs, One Ear and the other mic. Should work if I understood the application correctly.

https://www.manualslib.com/manual/1051746/Uniden-Bearcat-Bc-855xlt.html Uniden BearCat BC 855XLT Operating Manual

You can get it fixed. The problem is finding someone to help you. Some of us "old" techs used to repair CB's, especially for Loggers. Then they became so cheap (CB's), no one wanted to fix them anymore. We have to charge for our time and expertise. So, look for an older tech. They can guide you through the repair and may have parts.

look up microphone wiring diagram for your cb and mic. more than one way to wire, depending on mic and cb having 4 or 5 on plug end. write down mic numbers and cb plug numbers. if audio on mic is 3 and cb is 4 put 3 on 4 pin check each wire. using power mic make sure red and black wire are on the right pin, can damage radio or mic or both.

Make sure the volume is up a little and then make sure the squelch is set so you do not hear any static (white noise). Also make sure the lock button is not on. Depending on the model, make sure the channels are not locked out in the menu. Make sure there are frequencies programmed in the channels. If these suggestions don't work, tell us more about the scanner like model number, how many channels, crystal or programmable, etc.

Customer service/try utube

It sounds like it is broken! Also, the squelch could be set too high, the speaker may be shot. You can rule out the speaker being shot by putting a set of headphones into the external speaker jack. If you hear something, even loud his, then the speaker is shot. Make sure that the squelch is turned all the way down.