Question about SanDisk Sansa c140 MP3 Player

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How to open up a Sansa C140?

The headphone jack on my Sansa C140 is only outputting to one earbud. The headphones work OK on other players. Problem occurs w/both music and FM tuner (so it's not the music files). I'm guessing I have a loose connection on the headphone jack. Does anyone know how to open up the Sansa C100 series players. All attempts so far have failed (no screws, no visible clips, etc.) I can slip a fingernail/thin blade into the seams between the different parts (there are three major pieces), bu nothing has budged so far. (On the plus side, nothing has broken off either :-) )

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Re: How to open up a Sansa C140?

I too had a problem with the headphone jack. It took me a while, and a few scratches on my Sansa C140 case, but I FINALLY figured out how to seperate the case.
1) POP the black top (with the buttons and display cover) off. Get under the edge and pry, working your way around. It's just snapped on.
2) With that cover off, you will see four (4) screws, one on each corner. Remove these. The BOTTOM will now come off (may require a little wiggling to slip the battery terminals out of their grooves).
3) You should now be left with the main board contained within the middle of the plastic case. Removing the board is a CHALLENGE as it is held (not tightly) by a couple of tabs, as well as the headphone jack and the connection port.

Be careful when working to get the board free. I ended up popping two of the solder-tabs off the board for the headphone jack when "prying" the board out of the case. Luckily I was able to fix it when re-soldering the jack to the board. And one of these may have already bad (requiring the repair in the first place).

Reverse the steps to put it back together, again being careful when re-inserting the board back into the casing.

Good luck. Hope this answer still find you in time...

Posted on Jan 25, 2008

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Re: How to open up a Sansa C140?

They disassembled one over on Check it out here; Best of Luck.

Posted on Sep 20, 2007

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1 Answer

Why i have to wiggle the headphone jack to get sound

Two possibilities:
1) either the earbud plug has a loose connection, or
2) a soldier joint in the player itself is cracked.

Have you tried different earbuds? If that fixes the problem, then yea!

If new earbuds don't fix the problem, the it's likely a cracked soldier joint. Cracked joints are easy to repair, IF you have the right soldiering iron and are a careful working who enjoys learning new skills.

Good luck.

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It is very possible that the problem lies with your headphones and not the player. Have you tried to use a different set of headphones to see if that fixes the problem?

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The player should be replaced - the headphone jack or the headphone controller on the circuit are damaged, and these are nt orderable parts.

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Either your earbuds are damaged or the headphone jack was damaged when you were working out or storing your player.

Your best bet is the warranty, or if you're skilled enough, a good set of miniature screwdrivers and a soldering iron. Also be sure to have some kind of dry cleaning solvent or some isopropyl alcohol and somekind of applicator to clean with.

Open up your player( 4 screws on your backp[late, and 4 more at the corners once you're inside). Once you have everything unscrewed, gently, pry apart the inner workings from the front plate, and then the rear cover.

Now you should be able to look at the headphone jack and notice two solder points attaching it to the ckt card at either side. inspect either point for corrosion or damage and repair as necessary. While you're at it, go ahead clean out anything else that needs cleaning and before you put everything else back together.

Remember when cleaning to be patient and smooth, as any kind of rushing may damage the inner workings of your player.

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This is a hardware problem that happens every so often on mp3 players regardless of manufacturer. Unfortunately, the whole player will have to be replaced, b/c there is no repair svc, and no headphone jack components for sale.

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Hate to tell you this, but most likely the headphone jack on your player is broken. It happens alot. If it's under warranty return it to the store. I don't believe the jack is user replaceable on this player. Try inserting the headphone jack only partway and see if you get both sides. Your cheapest solution if it's out of warranty may be to just insert the jack to the point at which you get both sides to work. It's a crappy solution, but it's probably your only hope. It's not a software problem or anything that can be fixed without tearing the player apart. Sorry for the bad news....

Aug 01, 2007 | SanDisk Sansa c140 MP3 Player

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One earphone works

i had the same exact problem with mine. Reading around it seems to be a common problem with the Sansa line. I opened mine up and found that one of the solder points that holds the ear phone jack to the main board had come loose. I soldered it back and it works like a charm. Pretty easy too. If you have a soldering iron, just open it up and resolder the solder point that has broken off. You can read instructions for disassembly here: When you have it apart, looking at it from the side, with the jack to the right, the broken point should be the rear (closest to the circuitry) point. You will see a very small, not sure what to call it, chip on the board you have to solder a connection to. here is a diagram: Hope this helps.

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The solder joint for the left channel has probably come unstuck from the pcb.

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My headphone jack may be messed up

For Sansa or Sandisk problems, contact This site is dedicated to Sandisk products and can help you. Good Luck

Mar 28, 2007 | SanDisk Sansa c140 MP3 Player

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Headphone problems

sometimes when overplugging the headphones people tend to loosen what holds it in place i suggest you insert the headphones about halfway and rotate them when and if you hear sound completely insert them but be patient

Mar 31, 2007 | SanDisk Sansa c140 MP3 Player

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