Mega's AMS 1117 5V Getting Hot with RAMPS 1.6 + 128*64 LCD (6 replies)

I have placed RAMPS 1.6 on my Arduino Mega Clone. When I feed RAMPS 1.6 with 12V 2A, the AMS 1117 component on Mega is getting hot. I might have attached fans to D9 and D10 in the wrong direction and gave it a try for a second. For testing, I have placed Adafruit Motor Shield on my Arduino Mega Clone and fed it with 12V 2A, the AMS 1117 component did not get hot.

Does this show that something is wrong with my RAMPS 1.6?
What do you think can be the problem?
I have a multimeter, which components should I test for discovering the damaged component?

Thank you.
bkarpuz

Note: The title changed after the discovery in the following post.