i made a 3d printer and it was working fine but unfortunately while cleaning the printer the y axis endstop board soldered pins touched a iron rod and short circuited. now the display went blank and everything time i switch on the power supply the light for the fan, heatbed and hotend turning on automatically and the display starts to give buzzer sound but if i switch off the power supply and connect the usb cable from my laptop to arduino mega then the display is working and showing all the values but when i turn on the power supply display going blank and starts to give sound. what might have damaged? is the ramps 1.4 got damaged or the arduino mega board? but i can upload the code successfully i don’t know what might have damaged
LDO/Stepdown from 12V to 5V
how to resolve it ?
replace the LDO/Stepdown - taht is, when you have verified it's dead and not any other reason like burned vias. Most likely it's beyond your capability, so get a new pair of boards.
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