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< Esato Forum Index > Sony Ericsson / Sony > General > Tutorial - Fix most Joystick problems - K700, K750 etc Bookmark topic

The joystick tends to be a bit of a problem on the K series. It's not so much the build quality - it is extremely strong and durable.

The main weakness of the joystick is the poor shielding from dead skin etc that falls into the gap, floats around, and gathers in the base of the joystick. This gums up the joystick, meaning it needs to be pressed HARD to push through the crap and operate the micro switch.

It is impossible to clean with brushes, cotton buds, cmopressed air etc. The crud needs to be broken down and washed away. The simplest way to do this is with electronic contact cleaner. This stuff comes in a spray can, with a long thin tube that fits into the trigger head.

This is what you do:

Go here to learn how to dismantle your cell (that link suits K750/W800).

Once you have the cell in pieces, grab the mainboard and contact cleaner and come back here.

Fit the tube to the triggerhead and spray the contact cleaner deep into the base of the joystick. Blast it in there for a few seconds then let it drain a bit, then repeat several times. Then repeat. And again. Get rid of all that crud messing up your beautiful cell

You'll feel a bit freaked out using contact cleaner. It runs off the circuitboard like water or very fine oil and you can't help but wonder if it's going to cause damage. But the beauty of contact cleaner is it evaporates without leaving any residue, and so it won't damage the mainboard at all. It also shouldn't set off water damage indicators.

Don't spray it on the lcd though (just incase - my k700 one went a bit funny, but then came good after a day). Keep the lcd away from the spray area.

Give the board a minute or two, then reassemble phone and test joystick. You should find a radical improvement. If still not 100%, try the whole process again, untill you can get no more improvement.

If after that it still isn't working properly, then your up for a new mainboard or to have a new joystick soldering in.

Hope that helps any game peeps out there who wanna fix their joysticks themselves.

It got mine sorted - it's like brand new




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File System Tweaks for the K750 K750 Tricks

[ This Message was edited by: max_wedge on 2006-07-15 16:05 ]
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Posted: 2006-07-14 05:29:37
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!
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Posted: 2006-07-15 17:13:29
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what size torx screwdriver do i need?
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Posted: 2006-07-15 17:42:30
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nice 2torial, m8t.
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Posted: 2006-07-15 17:47:23
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@mart89, T-7 torx screwdriver

@tranced, thanks, I thought it might give hope to some peeps
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File System Tweaks for the K750 K750 Tricks

[ This Message was edited by: max_wedge on 2006-07-15 18:10 ]
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Posted: 2006-07-15 19:04:36
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Hmmm.great tute mate, but where do we find that eletronic contact cleaner? is it the same as the good ol' VHS/Tape head cleaners?
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Posted: 2006-07-15 19:10:38
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You can usually get it at electronic hobby stores. Tape head cleaner is probably not suitable, it's usually isopropyl alcohol. Maybe just a little too harsh. Besides you need the power of the spraypack to really break up the crud.


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Posted: 2006-07-15 19:35:00
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Quote:
On 2006-07-15 19:04:36, max_wedge wrote:
@mart89, T-7 torx screwdriver
[ This Message was edited by: max_wedge on 2006-07-15 18:10 ]


Ok thx, do you also know the size of the crosshead screwdriver?
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Posted: 2006-07-15 19:48:53
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Don't mean to nitpick, but I think you'll find it a T6 Torx you need - that's what I've been using anyway!

Great tutorial though, I have a K700i I've just fixed that has a slightly unresponsive joystick, I might try that trick on that. Where would I get contact cleaner - or would something like WD-40 do the trick just as well?

Quote:
On 2006-07-15 19:04:36, max_wedge wrote:
@mart89, T-7 torx screwdriver


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Posted: 2006-07-15 20:49:16
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Just ask for contact cleaner at your local hardware store, most will probably have them.

[ This Message was edited by: mart89 on 2006-07-15 19:57 ]
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Posted: 2006-07-15 20:56:39
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