mainboard 4.2.2.2 overheating

question, i was just looking if this is a main problem.
because i find this strange.
so i was calibrating mine platform.
then it said nozzle is overheating, but it was all cold.
so i bought a new extruderset complete to be sure.
and stil the problem.

then i removed all connections from the board, and still nozzle to hot.

then i feld the ams1117 was very, hot. because i have them , i replaced it
and still same error. but what i find weird the whole board is getting very hot.

is there somebody who know how to fix.
thankyou, i already ordered a new board, but i want to know whats wrong.

because this mailfunction came out of the blue. and to buy a main board each time.
i dont find that normal.

thank you in advance