Intermittent AF540FGZ problem
charlesr at visi.com
Wed Oct 7 17:38:41 EDT 2009
On Oct 7, 2009, at 16:31, Doug Franklin wrote:
> It sounds like one or more loose electrical connections somewhere.
> Did you try cleaning the contacts in the hot shoe and on the flash?
> If not, do so. If so, I guess it depends on how adventurous you are
> and how easy the flash is to get open.
For the dim pre-flash, I can see "maybe" that this would be
involved... but the zoom problem occurs (occurred) whether or not the
flash was attached to a camera.
> If it's not the shoe contacts, my first suspect would be the wires/
> connections that lead from the contacts in the foot up to the
> circuit board. Those should be easy to fix on the foot end, but
> likely not on the circuit board end (likely to be a flexible circuit
> board that would probably be damaged by normal soldering with a
> typical iron).
I guess I just need to write up a good letter, cross my fingers, and
send it in. (sigh). Good thing I have a few spares laying around.
> It doesn't sound like the wiring from the circuit board to the non-
> camera components, like the tube.
Yup, I agree - seems more like a logic problem (the tube not being
told the right thing to do) rather than a tube issue (tube UNABLE to
do what it is told).
Charles Robinson - charlesr at visi.com
More information about the PDML