12V from RAMPS to Arduino (3 replies)

Hi there,

I know Arduino gets 12V through RAMPS and in Arduino it goes through 5V regulator and powers on the Arduino.
I know about frying the 5V regulator on Arduino. I have fried mine and replaced it with 7805.
I'm printing from SD.

i just saw Arduino reset itself during warming up. The screen went blank and displayed Marlin boot screen.

So, Is there anything else on the voltage path between RAMPS and Arduino that might black out for a moment and reset Arduino/Marlin?

I just got a new RAMPS and it was a cheapo. I'm suspecting it, but will not rule out PSU problem or Arduino problem.
I'm mentally prepared to replace some parts from the RAMPS, because cheap chinese shit. :)

Currently my printer is running under load and seems stable.
I'm printing some molds to make silicone damping thingies for heatbed.

It might be a firmware issue? I'm still running RC6.