I have a ECR that had bad contacts. The fix was simple as the contact points in the battery well were already loose. I took some thin brass plate, used a paper punch to make new contact plates; roughed the bottoms and soldered these to the loose wires. Aluminum foil goes in one well and a pair of air zinc hearing aid batteries in the other and...POOF... a working Oly.
All and all, about a half hours work and that despite my being an absolute spaz at electronics soldering.
I replaced the light seal on the door as it was goo, but that's just about de rigueur for most cameras written about here.
I have yet to run film through this camera but after looking at your pictures Superbus_, I can't wait to put my camera into action!
Since it's on my short list of things to get, does anyone here have a suggestion for an aftermarket lens hood?