There is also a voltage regulator on the circuit board that can go open or go for a it is a 0.75 part.
CC
Did he tell you what he replaced?Mine was broke, I ended up sending to a guy off ebay that rebuilds them. He claims hes fixed it, so ill see come this weekend. Its coming in tomorrow, but I'm out of town soo... if hes done it, it was only 50$+shipping.