Cobra 29 LTD Classic won't turn on
No matter what you do, you can't get your Cobra 29 LTD Classic to turn on.
The Volume Knob is turned off
Before tearing your Cobra 29 LTD Classic apart, check the volume knob to make sure it is properly connected and in the 'on' position. Check out the replacement guide for the Volume Knob.
The Power Cable is disconnected or not installed properly
Check to make sure your power cable is connected properly to the power source, usually the vehicle's battery. Check out the replacement guide for the Power Cable.
The Fuse is blown
Check that the inline fuse is connected to the red power cable. If the fuse is broken it must be replaced. Check out the replacement guide for the Fuse.
Cobra 29 LTD Classic is not transmitting or receiving
The Cobra 29 LTD Classic is not transmitting or receiving any signals after trying several channels.
The Antenna is not tuned correctly
Make sure that your antenna has been properly tuned before you try transmitting with your radio. If you try to transmit signals and your antenna is not tuned you may damage your Cobra 29 LTD Classic.
The Radio is not in CB mode
The Cobra 29 LTD classic has two transmitting modes. The CB mode which is the mode for transmitting and receiving. The PA mode which is used for talking through an external speaker on your vehicle. This mode does not transmit. There is a switch on the front of the Cobra 29 LTD Classic to switch between the PA mode and CB mode. Make sure the switch is in the CB position.
The Radio is on the wrong channel
Check that the channel is the one you are trying to transmit and receive on.
The Squelch Knob is in the wrong position
The squelch knob is like a gate for incoming signals. when the knob is turned all the way clockwise it closes the gate for all incoming signals except for the very strong ones. When the knob is all the way counterclockwise it opens the gate all the way up to let in all signals and white noise. For proper operation the squelch should be adjusted so that you have the gate open as wide as you can without hearing the white noise. So start with your knob all the way counterclockwise and turn slowly in the clockwise direction until the white noise stops. That should be the operating position.
The Microphone is not working
Please see our replacement guide for the Microphone.
Cobra 29 LTD Classic is receiving but not transmitting
You can hear others through your radio, but others can't hear you
The Dynamike is in the wrong position
Turn the dynamike knob up past 75%, it can be found on the front of the device.
The Radio is on the wrong channel
Check that the channel is on the correct channel and that when you transmit a signal, make sure that receive a signal is on.
The Microphone is improperly connected
Make sure the mic is connected to the Cobra 29 LTD Classic properly. If that doesn't work, try a different mic to ensure that the mic isn't faulty. Check out the replacement guide for the Microphone.
Receiving Unusual Static or background noise
There is a large amount of static, making it difficult for you to hear and understand what is being transmitted/received on the Cobra 29 LTD Classic.
The Antenna is not tuned correctly
Make sure that your antenna has been properly tuned before you try transmitting with your radio. If you try to transmit signals and your antenna is not tuned you may damage your Cobra 29 LTD Classic.
The Squelch Knob is in the wrong position
The squelch knob is like a gate for incoming signals. when the knob is turned all the way clockwise it closes the gate for all incoming signals except for the very strong ones. When the knob is all the way counterclockwise it opens the gate all the way up to let in all signals and white noise. For proper operation the squelch should be adjusted so that you have the gate open as wide as you can without hearing the white noise. So start with your knob all the way counterclockwise and turn slowly in the clockwise direction until the white noise stops. That should be the operating position.
The Volume Knob is turned up too high
When the volume knob is set at the maximum level, it starts to get distorted, turn the volume knob down to 75% to get a clearer sound.
My PA speaker will not work
Your Public Address speaker is not working after checking the volume.
The PA Speaker is disconnected
The PA (Public Address) speaker must be connected to the PA.SP port on the back of the Cobra 29 LTD Classic.
The Dynamike is turned down
Turn the Dynamike knob up to 75%.
Team
Cal Poly, Team 11-37, Amido Fall 2013 Member of Cal Poly, Team 11-37, Amido Fall 2013
CPSU-AMIDO-F13S11G37
4 Members
9 Guides authored
13 Comments
I have a Cobra 29LTD Classic CB radio. Radio was working fine but just quit receiving. Transmits great. Antenna adjusted fine.
Randy Hartman - Reply
I have a Cobra 29 LTD Classic with a Connex board in it. I have no problem receiving I hear everyone just fine the problem is it doesn't put out no one can hear me. also the meter reads when you key up supposed to go to the right but when you key up and goes to the left. Please help
alonzog77 - Reply
After working for a company for several years and using the Cobra 29 LTD I have found that they are failing way too often. The drivers can hear just fine but when they transmit no body can hear them. I’ve replaced many of the coax cables, always try a new mic or antenna first but the only fix that works is to replace the CB itself. They are made in China and i am finding that the quality of this radio is what you come to expect from a chineese product. I talked to Cobra themselves and they said they have not had a problem with this issue to which I call BS. I have at least 10 of these on my shelf because their not worth the cost to repair and they all seem to have the same problem with not transmitting.
Benjamin Ball - Reply
I have a cobra 29 Ltd classic CB
Very thing is hook up right but nothing is happen
What do I do
John Sullivan - Reply
Put a used cobra 29 LTD in my truck, antenna is properly installed, but I have no squelch, the swr meter bounces back and forth when I try to calibrate, I get really high readings on channels 1 and 40, exhausted all my options with this, it can't be the radio, I had a brand new uniden and it did the same thing as soon as I put a fire stick antenna in my truck. Help!
explorer1257 - Reply