Question about Cobra 25 WX-NW-ST 40-Channels Base CB Radio

3 Answers

Blows fuses This radio was installed in my Volvo truck. The computer in the truck started having issues and over-voltaged the whole electrical system. When that happened the CB shut down and has never powered back up since. The inline fuse blew so I replaced it. It don't matter if the radio power switch is on or off it still blows the fuse. I seen somewhere that there is a reverse polarity protection diode on these radios. Where is it and what is it marked?

Posted by on

  • Anonymous Mar 30, 2014

    now blows fuses and will not power on

  • Anonymous Mar 30, 2014

    reversed polarity, now will not power on , but blows fuse

×

Ad

3 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 126 Answers

When you open up the radio and look at the component side (top of pc board), the diode you are looking for is D17. It is located basically in front of where the PA jack connected to the pc board. Just make sure when you solder the new one in place, observe the side that the grey band is on, which should be facing toward the point of the arrow pic.

You can pick the diodes up at most Radio shacks or online through www.partsexpress.com. I use Parts Express for all of my small electrical components and tools. They are very reasonable and very trustworthy. The diode you are wanting is called a Rectifier Diode. The part numbers range from 1N4001 and 1N4008. I use 1N4007 (the only one Parts Express stocks) and it works just fine. Here is a direct link to the page with this diode http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=1N4007
They are only .09 each. I hope you get your radio back in working order.

Dean Pitts
Rollin CBs
Mt. Vernon, TX

Posted on Jun 17, 2008

Ad
  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 27 Answers

The diode used is a standard 1amp 50 volt you can get one from almost any junked electronic device...a 1 amp 400 volt will be fine also to use
CHEERS

Posted on Jul 03, 2008

Ad
  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 13 Answers

I have a friend who is a CB tech and when I did something like that to a Palomar amp I had, he replaced the diode in a couple mins and that did fix it. See if you can find a service manual for you make and model. It was located right by where the power lines came into the case. Make sure you install the diode the correct way. A diode is what is used to allow electricity to flow only 1 direction.

Posted on Jun 15, 2008

1 Suggested Answer

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 Technician 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 repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

2000 volvo v70. Radio was left on Would not jumpstart...battery takes a charge soon as it is connected to car..smoke starts coming from either starter or alternator and if I turn key on..blows fuse


that question is not very clear, is the smoke coming from the starter or the alternator ??? obviously which ever it is , the smoke will indicate a short circuit in either the starter or alternator and this is why the fuse blows when you switch on you need first to determine if it is the starter or alternator then get it replaced or repaired.

Oct 03, 2016 | Volvo Cars & Trucks

3 Answers

2001 volvo v70 tailgate lock/unlock relay location. Tailgate not locking checked fuses, no sound from tailgate, however do get click sound from fuse area.


Check the wiring to the rear hatch. The cables break and cause a variety fo problems like yours. You will have to take the plastic cover off and expose the cables.

Mar 01, 2015 | 2001 Volvo V70

1 Answer

Subaru electrical blows fuse to computer


You really need to supply more detail. What have you inspected? Have you checked the fuses to see if there are other problems? Have you noticed any damage to cable harnesses behind the glove box or in the engine compartment?

Typically when you blow fuses, there is a ground not connected and the voltage spike blows the fuse which is the safety feature placed by the manufacturer. If you do not have electrical experience, do not try to resolve the issue yourself. Seek a professional repair center right away.

Jan 24, 2014 | Cars & Trucks

1 Answer

Radio amp fuse blows


problem could be radio.10 amp fuse for ignition switch power up radio display the 30 amp fuse for radio amp system in which that circuit hot at all times.

Nov 18, 2013 | 1998 Lincoln Continental

1 Answer

Crossed battery cables radio dont work put new fuses in still dont work


I had similar issues and it turned out to have to do with my remote start. I was going to remove the whole start system but decided on a new vehical since the damage was done.

If you dont have a remote start, the issues are electrical; ruined wires etc. I would say take it into an electrical auto shop.

Nov 26, 2011 | Cars & Trucks

1 Answer

MY 96 SUBURBAN 2500 7.4L SUDDENLY DIED WHILE DRIVING. AFTER I COASTED TO A STOP I TRIED TO RESTARTING BUT NO LUCK. HAVING HAD THE FUEL PUMP REPLACED BEFORE I KNEW TO LISTEN FOR THAT SOUND OF THE PUMP...


The key is to find out what is causing the ECM fuse to always blow. With just the key on try and see if any codes are set in the ECM. If not, try a new ECM. If the fuse still blows, then disconnect all accessible electrical for everything, including radios, accessories, relay boxes,etc. except the ECM. If the fuse still blows, then probably something wrong with the wiring to the ECM. If it doesn't blow then start hooking up things one at a time until it blows again. Once it blows, that is your problem.

Aug 24, 2017 | 1996 Chevrolet Suburban

1 Answer

In my 2000 volvo s80, the radio stop working and the door lock button and the dome lights are intermittent. I checked all the fuses and are all good.


Try resetting the electrical system by locking and unlocking the doors with your key in the driver's door 5 times in a row. A service manager at a Volvo dealer showed me this after they did some work on my car and on the way home the sunroof wouldn't close.

I have a 2001 S80 that I have to reset the electrical system like this every time I disconnect the battery. All kinds of stuff stops working...sun roof, door locks, lights, radio, windows, etc. Just reset like described and everything should start working again.

Good luck.

Sep 19, 2009 | 2000 Volvo S80

1 Answer

Installing a sony cd/radio (CDX-GT222)


Sounds like a possible ground issue. Check your ground (very important). Also try running the red wire to a keyed source i.e. from fuse block. Then run the yellow to a constant 12v source i.e.battery.

Jun 19, 2009 | Sony CDX-GT210 CD Player

1 Answer

COLD START ISSUE


try pushing the 4 wires on the radio supression relay into the connector, then try starting it... does it start, run, then die? those connectors ****, i've had the same prob. have you let it huff on some ether? (starting fluid) does it come to life? that would confirm weather or not it its fuel related. my 740 i was loosing voltage to my injectors 10 volts and under, causeing them to inttermittantly not fire, caused by a bad connection at that supression relay.


Feb 13, 2009 | 1991 Volvo 740

1 Answer

1989 Volvo 740 audio fuse 26 blowing


I had a friend who owns a small dealership make a call and he received a wiring schematic that showed that the radio has an external audio amp located under the dash below the steering wheel. The amp was shorted.

Dec 11, 2008 | 1989 Volvo 740

Not finding what you are looking for?
Cobra 25 WX-NW-ST 40-Channels Base CB Radio Logo

178 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

3289 Answers

Brad Brown

Level 3 Expert

16406 Answers

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

Answer questions

Manuals & User Guides

Loading...