Question about Midland 79-290 120-Channels Base CB Radio
I have a midland 79-290 the unit powers up and receives and seems to transmit, but it is stuck on channel 9 and none of the functions seem to work
Thanks for the help
First, try resetting the faceplate CPU by shorting the proper pins on the faceplate to radio connector on the back of the faceplate with a piece of wire... They are marked on the connector, if this fixes it for you, enjoy!
If that doesn't work, then remove the back cover of the faceplate and check the faceplate connector itself for bad solder joints. As a matter of fact, check the entire radio for bad solder joints before looking any further.
I bought one of these radios a short time ago; Everything worked except for LSB.
I was told by the radio shop I bought it from that I'd have to wait until June to get it fixed, so I opened it up myself to see if it was something easy to find/fix, since I felt that if it was anything major it wouldn't be able to get AM or USB either.
In my case, I found bad solder joints on the faceplate connectors and a bad solder joint on one of transistors attached to the heatsink.
Once I fixed those two things, it's been a great little radio.
Be sure to reset the faeplate after resoldering and assembling, to clear any errors from the CPU.
Posted on May 22, 2008
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Posted on Jan 02, 2017
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