Mamiya 7: Sticky Dials from a Liquid Spill
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
This Mamiya 7 had a problem with the shutter speed dial, ASA dial, compensation dial, lock button and shutter release button all sticking or stuck in position. This is usually caused by a sticky liquid spill and that was the case. The photos show the brown residue on the bottom of the top cover and in the shutter dial. This caused some of the parts to be almost glued together.
Solution is to disassemble and clean all the parts of this sticky residue. Brown color might be a cola drink? In any case, it does not take much to cause a problem. Only a very tiny amount of this residue on plastic parts that rotate next to each other will cause a large amount of friction and brings things to a halt.
