Vacation Plans I think its gonna work
Jan 12

My K750i joystick was bothering me for a long while. Even I had trouble using the phone, imagine people who borrowed it from me. I joked its a security mechanism that only I can use it.

I Googled and found this. I had never opened my K750i before but i succeeded in doing that without a T9 screwdriver quite easily. Although I was a bit afraid of damaging its case. I did not disassemble it completely, just removed the keypad board and the black plastic below it, then pulled out the joystick cap.

Spraying the solvent is the hardest part. A small dropper should be used ideally but if you are ill equipt like me, other things might work as well. I sprayed some WD-40 in a small bottle cap and used a triangular guitar pick to put in the solvent in the joystick module. When putting in the solvent I held the joystick in the opposite direction so that a bigger gap for the solvent is created.

Put the solvent on each side and move the joystick in every direction so that the solvent gets distributed properly and if this does not work try adding more solvent. It took me three tries before my joystick was good as new(maybe better than that). First I used a pencil tip to put the solvent in, next i sprayed the WD-40 on the module(I highly recommend not to do something stupid like this) and lastly my guitar pick method turned out to be highly successful.

There are a number of solvents that can be used listed there. WD-40 would not only dissolve dust or whatever that made the joystick so unresponsive but also would lubricate it. So I guess its better to use than others, and other than that it was the only thing I had handy.

All that would be required is: a screwdriver, a small phillips did the job for me, some sort of hydrocarbon solvent, something small and pointy which can be used to drop the solvent on the module, something flat and rigid like a plastic card to slide through the sides of the phone after unscrewing, I used a guitar pick for both the dropper and card. Some tissues and possibly newspaper so that spilled solvent doesn’t mess the workspace.

I highly recommend you see this to get the idea where to apply the solvent. And this to get an idea how to open the phone. It is highly unadvisable to disassemble the phone completely, open only two screws from behind to remove the front cover only.

And if you destroy your phone in the process, don’t come crying to me, I am wont be responsible. You should not trust a bloggers anyways.

7 Responses to “How to repair SE K750 joystick”

  1. stabani Says:

    i might actually try that with my w800i once i get my k800i (or some other fone to go with it). It’s worth a try atleast

  2. Aaron Says:

    I have heard that sometimes the fault is a diode that needs replacement. My keypad clicks, but nothing happens. Will spraying solvent also help this case?

  3. ibrahim Says:

    Aaron, i dont think this would work in your case. If your keypad doesnt work then its certainly something wrong with the electronics. Yes i’ve heard the joystick module can also be replaced.

  4. harmz Says:

    hi

    ***WARNING!!!!***

    i saw a similar method about a month ago, and tryed it out, and my joystick is now PERFECT!…..

    BUT, BEWARE…

    i really would not recomend WD-40!!

    my tut for fixing joystick was…
    http://www.esato.com/board/viewtopic.php?topic=125703

    quoted..
    ” Don’t use WD-40, it’ll gum up the joystick completely (wd-40 doesn’t completely evaporate) You really need the contact cleaner stuff, but it’s only $10 or so a can and you’ll get lot’s of use out of it”

    and that is true. i tried with an old t610 abt a year ago. wd-40 srta works, and then it slowly goes back to normal, and then worse than it ever was before.

    “electrical contact cleaner” evapourates to completely touch dry within about 10 secs. it will breakup all the crap in the joystick AND resurface the electrical contacts inside. it fixed myn perfectly, and terchnically, it should last just as long as a brand new joystick would.

  5. Adyclare Says:

    You just saved me a small fortune!! (and an earbashing from my other half for buying stuff off Ebay!!) It took 3 applications but is now as good as the new one my son got 2 weeks ago!! What did we do before WD40?

    Thank you

  6. Anonymous Says:

    Well there are some advantages to being a physics grad student… No hasle, I just went to the lab next door, took som toluene, a syringe, a needle and dropped some toluene into the joystick-module even without taking the phone apart. If you take down the metal decoration ontop of the phone’s front you you will be able to take down the plastic cap and to access the module. Now it works fine! Thanks for the idea. Cost: $0, time 5 min.

  7. whistler Says:

    Harmz says WD-40 may be a bad idea. He might be right about it but my joysticks still works perfectly.

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