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Andy Keller wrote:
I'm no expert on electronics, but if it's the card reader, why wouldn't it do that to every shot?
It's the bane of every electronics tech's existence; the "intermittent." It makes it hard to diagnose, because it never seems to happen on the bench, only in the field.
If it's a loose or corroded pin, a slight change in angle could cause a signal strength drop; and if one bit is lost the whole sequence gets scrambled.
It's actually quite rare to have a total failure in a reader; it usually starts with one or two mysterious "weird" images, but then gets progressively worse over time.
BTW, "intermittent" was one of the first adjectives to become a noun that I experienced. Short for "intermittent problem" or "intermittent failure" it became just "an intermittent" among telephone company "equipment men," of which my father was one starting in the 1940s.