castle sidewinder sv2 esc
 

Does anyone know where to find what the lights/sounds mean for the esc. My buddies sv2 he bought it like a month and a half ago. used it ones. blew the diff in his sc10. i just get the part and fixed the diff. plus it all in and the motor is making a hum(buzzing) sound and the esc has a yellow light. Now when it is plugged in the esc does its normal beeps at the start and then beeps again when its ready. then thats when the motor starts humming and the esc goes yellow. what does this mean? And the switch wont turn it off now. Iv been told that the switch can quit working on these esc's. Any help is greatly appreciated. Thank you