I have the same problem than others.

Is there N800 schematic or diagrams containing the electronic components?

I opened my device, checked the wires and components but I still having the issue.
Someone said that the issue is located in the screen, in that case there are few components there but two are integrated circuits, anyway even if the component were detected to solder there is quite difficult.

In my opinion we should try to find the screen technical details and manufacturer, and try to find it directly in electronic components shops.

More details:
http://bloglon.blogspot.com.es/2012/...okia-n800.html