Question about Radio Communications
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Posted on Jan 02, 2017
Do you have your channel switch ( the first switch to the left as you look at the front of the radio ) switched to a normal position ? If so, you may have a bad switch. Another problem could be a bad PLL Chip which is the frequency control device. I hope this helps.
As for the Guest post on the TRC-466, I would install a new mic first, as if there is a problem in the mic or cord, it will cause the sound to quit. Other than that, it would be a good guess that the audio chip is bad. Good Luck
Posted on Jan 07, 2008
SOURCE: Radio Shack TRC-502 cb radio
Here is the owners manual I'l see if I can get my hands on a internal schematic
Posted on May 14, 2008
SOURCE: cb radios-galaxy dx99v
This has an LED channel display, which is the same as the Cobra 29. You can pick up a new one, there are a few color options available. You need to be very proficient with de-soldering and soldering small parts. You need a desoldering iron or desoldering wic, and no bigger than a 30 watt sodlering iron, any bigger can burn the foil trace, and some solder. You have to open the case, remove the faceplate screws, remove the faceplate, remove the channel selector/pcboard, and the channel display pc board together. Now you desolder the pins of the display, aproximately 20, remove the diplay, insert the new display observing direction (make sure it is face with the decimal to the right place), solder each pin to the pc board, and clip off the excess section of the pins (which is sticking out of the back of the channel display pc board. If you have changed to a blue display, you need to remove the orange or green cover, and replace it with a blue one (I make mine from blue transparant report covers) and hot glue it to the inside of the faceplate where the old one would have been. The reason for this is that the blue light will not shing blue thourgh a green or orange cover, and if you use clear, the display will be extremely bright, and the blue cover will knock down the glare a little. Now just put the radio back together and fire it up.
Now with that said, if you think you may have any trouble with this, you can take it to any cb shop and they should be able to help you.
Any more questions, don't hesitate to email me at email@example.com
Posted on Aug 31, 2008
Open up the back of the radio and check the solder joint from the antenna connector. I had same problem and it was this.
Posted on May 17, 2009
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