My touchscreen on Oasys stopped working corectly. Problem was not due to touchscreen malfunction but due to the ribbon connecting it to main board.
I cut a part of that ribbon. It is to weak to solder on it. I scrapped one end and put in the connector which connets two ribbons.
Now touchscreen works fine.
I have also notticed that if some buttons stop working it is probably to the dust gathering inside. Use compressed air it helps.
Hope this will help someone to fix some problems with O.
Touchscreen problem fixed
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