I have had a AEAD200le for many years and it always worked great. The other day I needed to repair a hay spike for my neighbor and I fired it up. It came on idles up on high and seconds later idled down as usual. I then tried to strike and it looked like a weak 4th of july sparkler. I then checked the voltage leaving the 110 volt plug and was getting 28volts at low idle and 40volts at high speed. I checked the brushes and saw the middle brush was very short and sparking where it contacted at. I figured this had to be the problem I bought new brushes and installed and same thing very weak spark and low voltage. I then cleaned the bands on the taps and checked again same thing. PLease help the machine has been sitting probably a year without running. What could it be.