Hi, yesterday I installed arduino mega 2560 + Ramps 1.4, and I plugged my power supply into the outlet and then suddenly pop noise came out and smelled like something burnt.. and then anyway I tried to upload configurations with Marlin, but it said the board was not connected. I think my laptop can't recognize the board.
I wonder if it's really fried, or it's because of something else. The board image link is below.
as you can see, number 1 got a small hole on it, and number 2 has been separated(one of the two legs of the chip) from the board.
I think I should buy a new arduino mega 2560 but without knowing what caused this problem, same thing will happen. How do I know what caused this problem?
And I wonder if it could be because of the Ramps board? because I soldered some of the cables of stepper motors to extend the length because the cable was too short. Could it cause the problem?
Sorry for too many questions, any advice will be appreciated. thank you.