There is a company near Champaign, Illinois which repairs Conn StroboTuners. It would take me hours to locate the receipt, but I had mine repaired there about 5 years ago. They were more than reasonably priced in their repair costs. Wish I could be of more help. I can't even remember the name of the town it was in, but it was 20 miles or so from Champaign. Good luck, Tom Sivak
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