Question about Cobra 29 LTD CB Radio

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Cobra 29 issues

I just bought a 29 ltd classic, i knew it didnt work but figured i could fix it. the power goes into and around to all the componants but nothing powers up any help would be great. i also have a 29 nw st that powers up but has no tx, meter dont move and light doesnt light.

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  • Dan Ford May 11, 2010

    on the 29 nw have you tried it with a known good mic?

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Check D23 and D28. They are polarity protection diodes. It could also be the power knob.

Posted on Feb 08, 2009

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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

1 Answer

Cant find vr4 on my cobra 29 made in vietnam


With the covers removed and the front of the radio facing you with the component side up, You will see a transformer with yellow,blue or red colored tape around the center. VR4 is located to the left of that. If you still can't find it, then remove D11 to open up the audio.

Jun 20, 2012 | Cobra 29 LTD CB Radio

1 Answer

How to fix the dimmer light ona cobra 29 nw ltd classic


HI I AM TRYING TO FIX MY 29 COBRA LTD IT WENT OUT ON ME

Feb 04, 2011 | Cobra 29 LTD CB Radio

1 Answer

Burnt one of the lead power wires of plug in on the inside and do not have wiring diagram to see where it goes, where do I go to get diagram for the wiring of the Cobra LTD Classic.


I don't know how well that radio is going to work even if you repair the bad wire. You may have blown the protection diode, D23, which is an N10014, and easy to fix however, you may have done much worse. You could have blown the audio chip, and maybe even the PLL.

If you blew the PLL then it's not even worth fixing.

Here is all the information available for a cobra 29

Oct 23, 2010 | Cobra 29 LTD CB Radio

1 Answer

I have a cobra 29 nw ltd classic i cannot hear or be heared


Start with the antenna that you have hooked to it, is it grounded, is the coax in good shape, is the connector in good shape. stuff like that.

Jun 14, 2009 | Cobra 29 LTD CB Radio

2 Answers

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

No TX Power


If it is classic it is a 2SC2029 driver transistor.

Nov 18, 2008 | Cobra 29 LTD CB Radio

1 Answer

Cobra 29 Ltd


Hi,

Appreciate the direct "Ask Me" again.

The initial posting would still hold true, best would be:
  • remove TR18;
  • replace 2SC2069 with 2SC1969; and
  • adjust L12, 13 & 14.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Sep 07, 2008 | Cobra 29 LTD CB Radio

2 Answers

Cobra 29 LTD Classic Operations Manual


For the operation manual, go to cobraelec.com or:

http://cobra.com/downloads/manuals/29LTDCLA.PDF


Thanks!
Dodgem

http://dodgem250.angelfire.com

May 05, 2008 | Cobra 29 LTD CB Radio

2 Answers

Squelch doesnt work


Open the component / speaker side cover on the radio, adjust VR3, this is the alignment control for the squelch. Set your squelch control knob on the front of the radio to about 10 o'clock and slowly adjust VR3 until the signal from the speaker is mute.

When you turn the squelch back to the 0 position, you should have signal with no squelch as in normal operation.

Thanks!
Dodgem

http://dodgem250.angelfire.com

Apr 06, 2008 | Cobra 29 LTD CB Radio

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