Question about Cobra 22 CHANNEL 2-WAY RADIOS

5 Answers

Cobra PR4700WX -none of the controls work

Is there a common fix for this? When I turn the unit on, no matter what button I press, nothing at all happens. Is there a lockout that's happening or is this a more serious problem?

Posted by on

5 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer
Re: Cobra PR4700WX -none of the controls work

If you find that the LOCK/MODE button does not correct the problem, I have discovered that the microphone button on the inside has a contact patch mounted on the board. This contact patch is like a piece of scotch tape with a metal dot in the center this slides off to the side and leaves the MIC deppressed continuosly which in turn will lock the radio. I have found this on several radios. Once you center the patch place just a small amount of super glue to the edges and yo will have no more problem

Posted on Nov 28, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer
Re: Cobra PR4700WX -none of the controls work

Your suggestion to check the alignment of the tiny disk on the TALK button switch was spot on. I was ready to throw away the radio, but five minutes of tinkering and it is working like new. Thanks!!

Posted on Feb 28, 2015

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers
Re: Cobra PR4700WX -none of the controls work


Your concern might be a simple case of "the radio is in locked mode" which can be verified with the presence of a padlock icon in the uppermost row of icons.

If it is so, turn it off by pressing the Lock/Mode button for a couple of seconds or till you hear a double beeping sound and/or the lock icon disappeared.

If there is no lock icon and none of the buttons will work, try to do a hard reset by removing the batteries and try again.

If none of the above will be corrective, your unit may require the services of a qualified communications technician since the problem may either be firmware or touch pad/logic circuitry.

Hope that this be of help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Posted on Jan 06, 2008

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.

    Welcome Back:

    Visited the website for 2 consecutive days.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 9 Answers
Re: Cobra PR4700WX -none of the controls work

I want to thank jimp19550 for the tip ( on the microphone button on the inside has a contact patch ). That was the exact problem on my radio. I re-centered the contact and it was FIXED !!!

Posted on Feb 04, 2016

Re: Cobra PR4700WX -none of the controls work

This suggestion fixed the problem, thanks! (Ptessing the lock/mode button for a couple of seconds...)

Posted on Jul 18, 2008

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

Why will my bellsouth 1010 two-way radios not communicate with each other?

both radios must be on the same channel number and also private code number

Jul 13, 2014 | Two-Way Radios

1 Answer

Uniden uho65sx Stuck on busy,and when press any key doesn`t emit noise.How to fix?

Turn your coded squelch off and adjust your manual squelch adjustment so that BUSY is not shown.

May 29, 2014 | Two-Way Radios

1 Answer

Is it possible to fix a non working PTT button on a RDV2020

The PTT button is one of the common failure parts. It is replaceable, but best done by an experienced repair center.

The following things can happen over time:
1) The internal PTT switch can wear out from frequent usage.
2) The user begins to press harder to get the PTT to work, bending the PTT switch further away from the external button the user is pressing.
3) Plastic diaphram, if any present, gets broken in half, and the external PTT switch doesn't work anymore.

Several companies offer flat rate repair on this style unit for around $85.

Best regards.

Aug 02, 2011 | Motorola Mobility RDV2020 RDX Series On...

1 Answer

I have a Rhino 530hcx, the volume button is stuck...when the device powers on the device locks up....other than Garmin, where can I get this thing fixed?

I am not sure if you got this fixed but mine is doing something similiar except it is the button above the volume (aquire other users) I had to press the button repeatedly at different angles to get the button to unstick. I have had this happen a couple of times now and the whole unit freezes up. Poor design in my opinion as this unit has only seen the field 3 times.

Jun 20, 2010 | Garmin Rino 120 2-Way Radio

1 Answer

My Uniden UH049SX has the BUSY indicator on all

velohead says.....

Factory reset is to turn unit on, whilst pressing SCAN and MEM buttons.

Mine also has same problem, and factory reset did nothing.

Is this a common problem ?

May 08, 2010 | Two-Way Radios

2 Answers

Can't change channel of a Motorola Visar Handie-Talkie FM Radio Model: H05RDD9AA4DN It seems that this radio operates in only one channel and I need to be able to chanmge channels. However everything else...

The Visar has a channel lock feature. If you hold down the two channel buttons at the same time, it will do one of two things depending on the settings. Either the channel will lock, or the channel numbers in the LCD will flip.
If you press the channel button and the "popples" "pop" (for lack of a better word) then the channel selection buttons re most likely OK. To fix it you just press both channel buttons at the same time for about 5 seconds. It will beep and you should be able to change the channels. If not, then it needs to be repaired.

Sep 17, 2009 | Motorola Two-Way Radios

2 Answers

Cobra PR4750WX - how do I adjust squelch?

You are right there is no adjustment. You can however turn the squelch off and this maybe what is happening to you.
To turn the squelch off you press and hold the button that is just below the push-to-talk button for at least 5 seconds.
To turn the squelch back on, you either press (less than 5 sec.) and the same button or change channels.
When talking with a specific party or group, you should use the tone coded squelch (CTCSS) and that will mitigate the noise if you are not already doing that.

Apr 18, 2009 | Cobra 22 CHANNEL 2-WAY RADIOS

1 Answer

Mts 2000 vhf constant tone

The scan is on and you do not have a scan list programed.

This is the most common problem connected to your post. Hope that helps, Bill.

Jan 02, 2009 | Motorola HT1000, MTS2000, MTX8000/9000...

1 Answer

Uniden bc95xlt scanner LOCKOUT REMOVAL

To remove the lockout from a channel, manually select the channel, then press Func + L/O.
L/O disappears.

To unlock all channels in the banks that are turned on, press Hold to stop scanning, then press Func
and press and hold L/O until the scanner beeps twice.

Dec 02, 2008 | Two-Way Radios

3 Answers

Kenwood ts-450s - cannot tune and no ptt

This is usually due to a stuck or shorted ptt line. I have repaired a couple of these and it was the same component each time. The packet TX transistor Q65 shorted causing the radio to power up in TX inhibit mode. Transistor Q65 is located on the underside of the IF board under the ACC 2 connector. This switching transistor is used only for tx (pin 9 of acc 2) and no other circuits depend on it. It can be removed completely if you don't mind not having ptt on acc 2.
This seems to be a common problem lately, I hope this helps you.

Apr 26, 2008 | Two-Way Radios

Not finding what you are looking for?

844 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cobra Two-Way Radios Experts


Level 3 Expert

3018 Answers


Level 3 Expert

1640 Answers

Cindy Wells

Level 3 Expert

4719 Answers

Are you a Cobra Two-Way Radio Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides