Spent 3 days chasing a shutter squeak on a Nikon F3 that wasn't even there
This old Nikon F3 came in with the owner saying the shutter sounded 'grindy' and slow. I'm thinking classic dried lube, right? Tore the whole thing down, cleaned every gear, re-lubed the curtain tracks with the proper stuff, put it back together. Still had the noise. Took it apart again, checked the mirror box, the springs, everything. Finally, after like 12 hours total, I'm holding the bare body and I realize the sound is coming from the bottom. The freaking rewind knob was slightly loose and the little metal bushing inside was rattling against the body plate every time the shutter fired. Tightened one screw, noise gone. The actual shutter mechanism was perfect the whole time. I felt like an idiot. How often do you guys get sent on a wild goose chase by a customer's bad description of a problem?