Question about Cobra 29 LTD CB Radio

1 Answer

Can not see 1n4001 diode cobra 29 cb radio

I toke the back off cb to replace diode 1n4001 can not find it

Posted by Anonymous on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Cobra Master
  • 1,795 Answers

If you are talking about the reverse polarity diode its there , right by the power wires that come into the radio. way in the back on the R.H. side.

Posted on Nov 25, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Dodgem250
  • 68 Answers

SOURCE: 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

Posted on May 10, 2008

Benimur
  • 6966 Answers

SOURCE: New radio

Hi,

Assuming no hardware faults, start with the basics, on powering on the radio:
1. RG Gain max clockwise;
2. Ch 9/NOR to Normal;
3. Delta Tune to mid position;
4. CB/PA to CB;
5. Squelch to minimum counter clockwise;
6. Channel selector to desired channel.

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.

Posted on Jun 30, 2008

  • 40 Answers

SOURCE: Replacing The Cobra 29 Nightwatch Illumination Panel

YOU CAN ORDER THAT PART FROM COBRA ELECTRONICS ON THE INTERNET YOU HAVE TO REMOVE THE FACEPLATE AND UN HOOK THE DRIVET INSIDE THE RADIO IT LOOKS LIKE A SMALL RIBBON CABLE THAT GOES TO THE FACEPLATE. SOME TIMES THE DRIVER ITSELF IS THE PROBLEM. MANY SHOPS JUST DO NOT WANT TO FIX THEM BUT I DO.

Posted on Mar 13, 2009

  • 773 Answers

SOURCE: Cobra 29 Ltd Classic

In most cases just turning up VR4 is more then enough. Replacing the final, tr14 with another transistor requires changing many more parts to get it to work.

With a new 29, there is no need to change the final. Just turn vr4 all the way up and you will see around 20 - 25 watts. L13 won't gain you a single watt. L12 will raise the dead key, and usually you want a lower dead key for good swing. L14 will gain you a few watts, but don't adjust this unless you have a watt meter. You turn it out to increase wattage, but too much will over bias the final and shorten its life.

You hook it to a watt meter with a dummy load. Then say a steady AHHHH into the mic while keyed. Turn the slug out until the needle stops going up, then back it down to where it stopped.

The easy thing to do, and you will be pleased is just to turn VR4 up. Now, Up is counter clockwise. Its a variable resistor, so the less resistance, the more modulation. So you want to turn the VR down.

that will be more then enough.

Posted on Apr 25, 2009

  • 773 Answers

SOURCE: I need Wire diagram for Cobra 29 LTD Classic CB

http://xbones_antennas.tripod.com/id21.html

Posted on May 03, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Cobra 29 ltd. turned rv4 switch and cb started smoking. what is the cause of this


if this is a used radio its because some golden screwdriver got into it but if its a new one then its the radio.Check the reverse polarity diode in either case to see if its burnt. If so replace it and see if it happens again.

Oct 18, 2013 | Cobra 29 LTD CB Radio

2 Answers

What type of diode was in d11 on the cobra 29 lts.. it was removed b4 i got the radio and id like to replace it


If it is the original 29 LTD, D11 is a IS2075K Diode. Attached is a section of the schematic showing the diode. Check the components connected to it to verify if they match those on the schematic section below. If they do, you should be fine installing the listed Diode. If they don't you may not have the model of Cobra 29 listed below.

11_24_2011_2_20_38_pm.jpg

Nov 24, 2011 | Cobra 29 LTD CB Radio

2 Answers

I have a 29 ltd with no mods that i know of .i installed it into my 2006 nissan titan and when i plug my power cord into the unit it instantly blows the inline fuse. i have a 3 amp fuse in it . do you...


  • Well it could be. Did the CB work before putting it into your truck? If the fuse is blowing you have a direct short. You might pull them two little screws on the tip of the cord and inspect the wires and tips of the cord. Make sure everything looks good there. Make sure the cord is hooked up properly as well.

  • Let me know what you find out.
  • Hope this helps.

Nov 19, 2011 | Cobra 29 LTD CB Radio

1 Answer

I think i shorted out my cb can i fix it


  • If you are referring to perhaps hooking up the negative and positive power wires backwards this should be an easy fix.
  • Remove the covers and look by where the plug plugs into the radio.
  • You will notice a 1N4001 diode on the circuit board. It will be black in color. This is the diode that blows when you hook the power and ground up backward.
  • Remove and replace with a new one. Pay attention to the "arrow" on the diode as it goes in one way only.
  • You can get two of them at Radio Shack for $2usd or so.
  • http://www.radioshack.com/product/index.jsp?productId=2036268


  • Hope this helps and thank you for using FixYa.
Regards, Tony

Aug 11, 2011 | Cobra 29 LTD CB Radio

1 Answer

What would cause my cobra 29 to blow fuses when u turn on the power


You have a bad diode near back. Probably the black fat one with a stripe. Its located near power leads and audio transformer in one corner. Change all Black Diodes with (White) stripes in back. You must of crosswired it blowing the diode.

Mar 31, 2011 | Cobra 29 LTD CB Radio

1 Answer

Blown fuses probably crossed power leads looking for component to replace have wiring diagraham


no need for wiring diagram just replace the reverse polarity diode. Look at where the power wires come into the radio and you will see a diode. that's the one to change.it should be a 1n4001

Aug 16, 2009 | Cobra 25 LTD 40-Channels Base CB Radio

1 Answer

No power cobra 29 checked everything must be in the radio


polarity protection diodes , replace d23 & d28 with 1n4001 or bigger.

Aug 03, 2008 | Cobra 29 LTD CB Radio

Not finding what you are looking for?
Cobra 29 LTD CB Radio Logo

Related Topics:

49 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cobra Radio Communications Experts

AnyMHz.com
AnyMHz.com

Level 2 Expert

500 Answers

Steve

Level 3 Expert

3287 Answers

Brad Brown

Level 3 Expert

15557 Answers

Are you a Cobra Radio Communication Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...