I ordered a set of 10 arduino MEGA 2560 PRO through AliExpress to XM on 31 of August and I received them on 13 of September
I tested 2 of 10 and they just produce a WHITE Screen of the tft lcd 3.5inch
. Loading 1 program is OK
. Touch screen reacts when touch the SCREEN : OK
. SD card reader is OK
BUT, the screen remains definitely white
I tested different things :
. MEGA 2560 PRO from another shop WinWin ... Works
. Change of PCB interface between Screen and MEGA 2560 PRO (version no 5 and no 6)
. Change of data bus D2, D3,... to D22, D23,...
And nothing improve that problem
Could you help me?
Thank you very much