I recently acquired an Olympus OM-4 and even with a fresh set of batteries power is only being supplied to the camera intermittently. Taking out the batteries and reinserting them sometimes solved the problem for a little while, but as soon as the camera was bumped or jarred the problem returned. At first I thought it might be a loose connection, but simply pressing on the battery compartment cover solves the problem every time and the little wire attached to the negative terminal spring looks to still be soldered on properly. Any ideas as to how to solve this problem or what may be going on? Should I simply return it to the seller?