I disassemble the top case to see each component. Yes the digitizer chip is really hot. When I touch the heatsink I can’t let my finger too long. The component used to convert in hdmi (near the hdmi port) is hot as well but less than the digitizer. And finally the FPGA is hot but less than the component near the hdmi and less than the digitizer.
But I find each component hot and not just warm. I take a look on the top and bottom of the PCB but I don’t see anything strange. Do you want picture of my PCB ?
What can I try ? I have a multimeter to measure some point