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Author Message   Josie Tinkerer Username: Josie Post Number: 4 Registered: 02-2011 Rating: N/A Votes: 0 Posted on Tuesday, March 08, 2011 - 10:46 am:    The problem may be electrical. When the shutter is wound, a switch closes, turning on the metering & shutter control circuits. Once the shutter fires, this switch opens, shutting off these circuits. Easy check - remove the battery. If the shutter acts normally and just snaps 1/500 of a second, the problem is electronic. If the shutter still acts weird with no battery, the problem is mechanical. Good luck.