Question about Sony Ericsson P990i Cellular Phone
I write this tip for Palm Pda's but it is valid for many other brands of pda's and phones.
First things to try is a normal reset and then a hard reset.
To do a normal reset, press on the reset button on your handheld.
Hard reset is performed differently on different models, check palm website for hard reset instructions: CLICK HERE FOR PALM RESET INFO PAGE
if the touchscreen doesn't work at all, and you can't align or calibrate it, or it presses on wrong spots even after calibrating many times, digitizer (which is the touch part on top of the lcd display) is most likely broken and would need to be replaced. On rare cases reattaching digitizer cable and making sure that the digitizer is clean and intact and properly on its position may solve the issue.
If you are inside warranty the repair may be completely free, contact your dealer or palm.
Outside of warranty, you have 3 options.
Note: In some phones the digitizer may be connected into the lcd in away that it can't be easily replaced. In these cases You will have to replace the whole screen. if the touch is non responsive after the replacement, the issue could be with the connector or then you have a faulty main board.
Posted on Jul 07, 2010
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Posted on Jan 02, 2017
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