Trackball select very hard push required
I've cleaned the trackball and it works moderately ok to move around the screen, but pushing to select has become harder. The little metal tab on the bottom of the button assembly is okay. The button on the mother board takes a lot of pressure to make it activate. I tried pushing it with another object and it just requires a hard push to make it respond. Any way to adjust that or am I stuck with it as it is.
I have done this on a friends phone to correct the same issue.
Do you mean pry up the contact that is on the Mother Board and underneath it may be corroded? Or are you referring to the metal tab on the trackball assembly.
I have noticed that using a sharp screwdriver on the metal tab under the trackball directly on the motherboard, the selecting feature is working again.
do you really say to pry up that metal tab and clean underneath it, between it and the motherboard it self?
button on board
I was able to lift the button off of the motherboard by careful use of a scalpel blade. the "button is a domed piece of thin plastic with a metal contact in the dome and another metal contact on the motherboard. Both contacts were perfectly clean and free of corrosion. Therefore the problem is in the structure of the plastic button portion or there is yet another contact below the first set that has a problem. In any case, I have no other ideas and am giving up on fixing this.
Ok, here is the final fix! I already made it on my device while waiting for some replies, and it worked good! ;)
The problem is the copper push plate underneath the trackball that is placed directly onto the motherboard of the device.
The problem is that underneath this plate there must be some corrosion or some kind of dust or some glue slipped due to the heat of the device (you'll understand why the presence of glue by reading ahead in the post).
In my device there was some glue and some corrosion! :?
The part we are talking about is a little black plastic square with a round metal plate in the centre.
This square is placed at the centre of the 4 leds and 4 trackball sensors.
The round plate we need to clean is placed up on the plastic base and is keeped still with a light brown square tape that is glued on to of all (there goes the glue!).
Here is what you need to do:
That's it!! now it should work. It took me about 15 minutes to do everything (same time as writing this post!) :)
Hope this could help.
Thank you all.
Thanks for the post. Although I clean my trackball regularly, I would have never known that on the mother board was just a taped on piece of metal.
Anyway, just an FYI... you don't need to disassemble entire unit to do this fix. Of course if it is, it may be easier... but not required.
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