Question about Coby CV185 Headphones

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My coby headphones doesnt work good. i have to twist it at the bottom near the jack and bend the rubber for it to work..and now it had gotten worst..how could i fix it or open it and fix it...

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To fix it you would have to repair the short in the wire. You could take an old pair of headphones and replace the cord a few inches up from the connector.
However, Coby is not known for their quality sound or headphones. You would probably be better off purchasing either another pair of Coby headphones or a better known brand with a warranty and excellent customer service.

Posted on Mar 22, 2011

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This problem is common with a lot of MP3 players. It is caused by excessive movement of the headphone jack and causes the headphone jack has worked loose from the circuit board.
To fix this problem the MP3 player needs dismantling and the headphone jack needs resoldering onto the circuit board to get the headphone working properly.

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How to fix a coby headphone jack if no music is playing


Inside your mp3 the headphone jack may have been unsaludered or how ever you spell that :P Have an electrician open it and saulder it back and see if that was the problem....either that or ur headphones are *****....

Jul 04, 2010 | Coby MP-C7085 MP3 Player

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My headphones dont work i think it is a wiring problem but not for sure


OK what you need to do is twist the cable around to see if the fault corrects itself, pay close attention to the Jack plug end. If it does you have a break in that part.
If the break is in the middle or near the jack you only need to fit a new plug and if in the middle get an extension (see image) to make it longer.
If near the headshell then you need a new cable. You can use one of these below for a new cable (just cutt of the female plug and strip back the wire).

6d0b93d.jpg

Apr 01, 2010 | Coby CV-160 Consumer Headphones

1 Answer

No sound


I had this problem as well. I would get sound from headphones but unplugging them I had no sound from the builtin speaker.

When you plug in your headphones it moves a thin piece of metal in the jack which interrupts a connection (this is a good thing) so it can know when to disable the internal speaker. When you unplug your headphones the piece of metal moves back and it enables the internal speaker again.

I was able to fix this by taking apart my x51v and bending the piece of metal a little while the headphones are plugged in so that it will contact better when the headphones are unplugged,

To take your axim apart there are 4 screws on the back underneath the rubber grips that you need to take out. Then you can just slide a finger nail up and down each side to remove the front and back of the casing. The back you will need to swing out from the bottom since it hooks over the headphone jack. I unplugged the small wire that connects the front half of the case to the guts using a tiny flat screwdriver.

Inside on the back, there is a black plastic plate that is held on by 4 more screws. Take that off.

Now you can see the headphone jack. I plugged in my headphones and used a small flat screwdriver to push against the headphone jack on the bottom piece of metal on the right side with the axim face down. You can observe the piece I mean by looking at the side of the headphone jack when you plug and unplug headphones. It moves perhaps 1/32 of an inch.

Your goal is to bend the piece of metal closer to where it is when no headphones are plugged in. The only way to bend it properly is to do it when the headphones are in.

Sorry if this isn't clear enough. I'm not sure if this is a permanent fix or not but it's worked for me.

Jan 04, 2009 | Dell Axim X51v Pocket PC

1 Answer

Tdk mp100 headphone jack


Each of the rubber covered cords running to each ear piece has two fine strand wire bundles inside. The right ear piece has a red colored strand and a copper colored strand. The left ear piece has a green colored strand and a copper colored strand. The wires are coated with an insulation lacquer. The lacquer burns off when you heat the wire for soldering.

Repair item: 3.5 mm stereo headphone jack, shrink tubing

Plan for strain relief:. These headphone wires can't take any tension at all. You need to crimp the black cords to the headphone jack somehow.

Slide strain relief and headphone jack housing over the over the rubber covered headphone cord.

  • You need to plan a way to relieve the pulling stress on the solder joints where the two headphone cords enter your replacement headphone jack.
  • Try shrink tubing if you have it.
  • If you have some thermal shrink tubing, slide a piece over the headphone cord end before stripping the wires.
  • Slide the headphone jack casing over the headphone cord also.
Strip each headphone cord 5/8" using the 18 gage setting of your wire stripper..

Hold each headphone cord in a "third hand" soldering assist tool and tease the green, red and copper bundles apart..I wore a 10x Magnavisor and I used a sewing needle and a bright light.

Twist the copper colored strands from both headphone cords together. They are the common ground wires. The copper colored bundle will attach to the headphone jack ground.

Apply a dab of solder to the end of each of the three bundles of wire. You will see and smell the insulating lacquer as it burns off. Keep most of the wire bundle cool.

Position the two strand headphone cord and the 3.5 mm headphone jack in the third hand soldering stand.
  • Plan where you can crimp the headphone cord. Crimp it when ready.
  • The green == left channel wire goes to the tip of the 3.5mm jack.
  • The red==right channel wire goes to the middle of the 3.5 mm jack
  • The copper colored wires go to the ground of the jack..
  • Measure resistance, 31 ohms per earpiece.
  • Screw the jack cover on and finish the strain relief craftsmanship.



Nov 28, 2008 | TDK MP100 Professional Headphones

1 Answer

No left ear sound.


That happened to me. It is fixable, but you need to open the caseing of the mp3 player itself. what hapened was that one of the dongles connecting the jack to the main chipset lost connection. you probably bent the headphone thing too much and it released.

to open the sansa, you must take out the battery. then you should find 2 black screws near the edge of the casing. Unscrew them and take off the black plastic cover. You should see the bottom is now totally silver. Near the headphone jack there should be another screw, Unscrew it. These are the only screwes you will need to unscrew from now. Next, Pry off the screen cover to reveal the chipset. Remove the connection from the chipset to the button pad. Take a standard screwdriver and carefully pry out the chipset, revealing the headphone jack. Be sure that the 3 dongles hooking it up to the chipset are in place. Put some tape on however you like, just be sure its tight, and be sure it doesnt interfere with any of the side buttons. Then add some more tape underneith the dongle for more support (do this unless you have a sodder, then sodder the dongles back on. Put the chipset back in the casing and replace the faceplate (dont forget to connect the button pad back to the chipset), and replace the back thing. Put the battery back in and test it. If it doesnt work then add a little tin foil into the back on the dongle. It should work.

Nov 26, 2007 | SanDisk Sansa c250 (2 GB) MP3 Player...

2 Answers

Only One Ear Bud Works


It is likely that your right stereo channel has either been severed somehow or there is a severe short in one of the cables. What you can try to do to test this theory is first turn on your music. Then wiggle the cable at the very base of the right earbud. If nothing happens wiggle the cord right where it connects to the stereo jack. If still nothing happens run your fingers along the right earbud audio cable bending and twisting it. If at any point you hear music again then you likely have a short. If it is near the earbud then it is going to be difficult to fix since these earbudfs have a large gauard. If the short is at the stereo jack then the fix is simple. A standard 1/8" stereo jack can be purchased from any electronics or audio store. You can then fairly easily seperate teh old stereo jack and solder this new one in place. Search the internet for tutorials on how to do this if need be. Even if you do not get any kind of sound when wiggling it at the base of the jack this is the most likely culprit since this is where most of the stress on the headphones occur. Be wary though, if you do attempt a stereo jack repair you will void whatever kind of warranty your earbuds may have so check before you try. But, in teh end you may end up saving a 60-100 dollar set of earbuds for 5-8 dollars. Hope this helped.

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how do i get music on to my coby mp3 from the computer, my daughters works from the computer why doesnt mine

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