John:
I'm fairly sure it's not the auto/manual switch. That was my first
thought so I removed the top cover and used a cotton swab and contact
cleaner to carefully clean/lubricate the switch. Also, the camera
looks very clean, with the switch moving cleanly without any obvious
'goo'. I find it interesting that I can clear the problem every time
by simply removing the lens cap and pointing the lens at a light bulb.
It acts like some part of the camera circuitry needs a node to be
charged or discharged, which the internal photocells are doing when
exposed to bright light. I've seen similar problems when parts were
left out of a prototype breadboard. Whatever is causing the problem
is not a 'hard' failure but something that can be changed by the
light current of the photo diodes.
Could a bad or leaky switch cause the interaction of modes?
Tom
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