it is possible the reciever has gone bad.
the beep from the ESC may indicate no throttle signal.

if you have any other reciever to test with, id do that 1st.

if you are sure you need a new ESC, i can get the 150amp ezrun ESC for $110 shipped.

that esc can handle upto 6s lipo power( a pair of 3s lipos in series)

so you could later upgrade the motor if you wanted to for even more power(the stock motor is only rated for 4s power)