I have got a new strange issue with my printers:

I have got a new strange issue with my printers: The printer resets after a little while from print start !!
I tried everything …
I changed the board with a new one (I use MKS V1.6).
I uploaded another version of marlin.
I used Cura more than a version.
I used sli3er
I used simplify 3D
I printed from SD-Card
I printed from PC using pronterface … nothing differently happened
would you please help !!

@Osama_Kamal This can be short-cut or overload of the power source. Try more powerful power source (same voltage, more watts).

Yeah sounds like a thermal shut down of the PSU. BEFORE spending more money, try putting a fan on it to help keep it cool.

However, the fact that it’s restarting COULD be because the PSU isn’t putting out enough power and the voltage is dropping enough to allow the board to reset.