Question about Cobra 29 LTD CB Radio

1 Answer

I have cobra 29 LTD that will power up, but wont talk or receive.

I had a connex board installed and ever since then it wont talk or receive

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  • Master
  • 14,553 Answers

First make sure the switch on the front is not set to PA or Weather if the unit has the weather featurre.

Then look to see if the receive/transmit meter is showing any movement in either mode.

You had a Connex board installed? I bet that is wired wrong or a wire came off in the process

Do it yourself installation or a "expert"?

Posted on Dec 07, 2012

  • toddlawrence
    toddlawrence Dec 07, 2012

    had a radio shop do it. It dosn't have a weather band and the meter dosn't move with a dead key or receive. I have some skills and checked the wireing on the connex board and it is done correctly and nothing is loose.

  • SD Tech
    SD Tech Dec 07, 2012

    Since it worked before consider removing it and put radio back the way it was--connex could be bad?

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Posted on Jan 02, 2017

Benimur
  • 6966 Answers

SOURCE: scematic

Hi and welcome to FixYa,

Pls click on the schematic diagram for a Cobra 29LTD.

Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 18, 2008

  • 2 Answers

SOURCE: cobra classic 29 ltd

Had fixed the same problem yesterday. My cobra worked when it wanted to, when it didn't it looked like you explained. I found out that on my cobra the blue wire on the mike connector was broken. When it disconnects, no sound. after soldering, everything works fine.

Posted on Jan 06, 2009

  • 20 Answers

SOURCE: installing echo board

red wire 12 volt all time conected to power supply and orenge wire 12volt when is on and 0 volt when is off ,this wired are in on off switch.

Posted on Apr 12, 2009

  • 13 Answers

SOURCE: scematic

a 100 ohm 1 watt resistor soldered across the pa and external speaker jacks work good for talkback

Posted on Nov 11, 2009

  • 1274 Answers

SOURCE: radio cuts out occassionally...no transmit,no

Hi, my name is John. Welcome to FixYa. Take the cover off circuit board side, and with the eraser end of a pencil, touch around on the board trying to locate cold solder joints, have to look real closely and re-solder them....Thanks for choosing FixYa...John

Posted on Nov 21, 2010

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Related Questions:

1 Answer

I have a Cobra 29 LTD that wil power up, but won't talk or receive.


lot of possibilities but the one I'm thinking of is , did you buy this radio new or used. If you bought it used there is a chance that the person that owned it last broke it and couldn't fix it so he sold it to you. Now you see the problem and want to fix it but don't know where to start. ok ,here goes. Check your antenna system A bad ground will will give you this problem.Make sure you SWR is low. then if that doesn't cure it open the radio and check for bad solder joints. Flex the radio and see if ti comes on. Check to see how it will cost to fix it ,then go buy another one.Only if no other options work.

Dec 07, 2012 | Cobra 29 LTD CB Radio

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Radio cuts out occassionally...no transmit,no receive.if i tap bottom of it,it comes back for awhile.it's a cobra 29 ltd classic,has bigger finals and connex board installed.


Hi, my name is John. Welcome to FixYa. Take the cover off circuit board side, and with the eraser end of a pencil, touch around on the board trying to locate cold solder joints, have to look real closely and re-solder them....Thanks for choosing FixYa...John

Nov 21, 2010 | Cobra 29 LTD CB Radio

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The Cobra 29 has always been a good talking radio and is preferred by truck driver mainly for that reason! The Connex is a great radio in it's own right but sometimes needs a little help. I would suggest a power mic and there are many to choose from but Astatic is a clear winner! My two cents for a suggestion!

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Installing echo board


red wire 12 volt all time conected to power supply and orenge wire 12volt when is on and 0 volt when is off ,this wired are in on off switch.

Mar 25, 2009 | Cobra 29 LTD CB Radio

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Scematic


Hi and welcome to FixYa,

Pls click on the schematic diagram for a Cobra 29LTD.

Good luck and Thank you for using FixYa. Happy Holidays.

Dec 11, 2008 | Cobra 29 LTD CB Radio

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Cobra classic 29 ltd


Had fixed the same problem yesterday. My cobra worked when it wanted to, when it didn't it looked like you explained. I found out that on my cobra the blue wire on the mike connector was broken. When it disconnects, no sound. after soldering, everything works fine.

Dec 04, 2008 | Cobra 29 LTD CB Radio

1 Answer

I have just bought a cobra 29 ltd classic with a scanner ant and it worked befor on the turck it was on but now that iv installed it on my truck im not able to talk to other nor hear them


sounds like a mic problem if a wire is broken in the mic it will not let you receive or transmit common..or not to common an audio chip...

Aug 17, 2008 | Cobra 29 LTD CB Radio

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