I was able to put my 3000 working again. Well here it goes:

If the touchscren is not reponding the ribbon cable lost the contact with the touchscreen panel. If you rub it it maybe work but is it will problaby lost contact again. I notice in my pronto only the second contact was broken (4 contacts). I also notice 3 holes on the board in front of the ribon (these were used in old 3000 to put the IR learn reciver). So I solded an hard wire (from a resistence of an eletric shower) in a way it will mantain pressure on the contact. It´s ugly but Is working for now. If want pics e-mail me.