I recently purchased a 7" Touchscreen for the Raspberry Pi, and after connecting everything up, I had no problems - everything just worked. Now, I recently needed to switch out the Raspberry Pi, so I took off the female-female cables going from 5V, GND, SDA, SCL on the controller to the Pi. I then took out the ribbon cable from the Pi, inserted the new pi, and re-attached everything. All of my connections seem to be correct, and the display works fine, however, the touch does not. Sometimes the mouse flickers around, occasionally clicking on random icons, otherwise staying still. I looked at some other posts on the net of people with similar issues, and they usually found it to be a power problem. I highly doubt this to be the case, as my PSU is the approved Rpi one, and I was using it with the screen before the touch function ceased to work. Any advice/help would be greatly appreciated! The screens aren’t cheap so I’d really rather not have to buy a new one!
Thanks for the help!