Hello everyone. I am very new to the vending world and hope someone out there can help me with a problem I'm having with a DN 276 machine. When I purchased the machine, it was equipped with a Mars 5800D changer (I believe); and there was no bill validator. At first everything worked well, then the changer started rejecting quarters, so I went ahead and purchased a Coinco 3341S changer and a Coinco BA30B validator. The validator works fine, accepts dollars and gives the correct change, but this changer would only accept change sporadically; mostly quarters and rarely dimes and nickels... so I got yet another 3341S changer that does the same thing. I also replaced the relay cube, it made no difference. Before I bought the machine it had sat up, unused, for two years. The only work I have done to it was to replace the ballast for the florescent lights and install a new thermostat (the old one went bad and froze my drink cans solid.. didn't think a can could swell like that)! Any ideas???