Parts of the touchscreen don't work - See first post for troubleshooting

[robbert.f]

The following may be worth a try for the desperate:

Repairing an unresponsive touchscreen - the fire fix ( slightly dangerous, will void your warranty)

WARNING this will void any warranty you may have whether or not it works. It involves fire and heating up electronics , so it may in fact damage your screen and make things worse . Be careful, don’t burn yourself, and also don’t burn down your house, street, neighbourhood, town, region, country, continent or planet, please. Keep a window open so that there’s good airflow and you don’t inhale anything that’s bad for you. If you’re uncomfortable with the procedure described be…

Has worked for me on several occasions.