I need your help. Y motor making a loud noise.

[rhonal89]

Hi there am printing abs. Temperature 240 bed 110, 55 minutes into print. Makerfarm 12 i3v Rambo. motor hot to the touch not sure if that has to do anything with it. After 55 minutes the motor starts making some loud noise. Am posting a video so you guys can hear it. You can hear the noise through the whole video. Can you guys tell me what could it be. Never done this before. Recently I update to marlin 1.0.2 for autobed level am not sure if that has anything to do with it. I attached my configuration files so you guys can look at and see if i done anything wrong. I have printed pla after I updated my firmware and never notice any of this noise maybe a little here and there i did notice a noise that was similar. Do you guys think it has to do with my voltage. I have this power supply just incase you guys want to know http://openbuildspartstore.com/12v-30a-power-supply/