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7-40 Reference — Camera
When the camera is
connected to a computer,
and/or the camera is being
operated with the AC
battery charger/ adapter, a
connected studio flash will
not go off, or goes off only
once and then freezes.
Polarity is reversed in
the studio flash — a
condition that becomes
apparent when the
camera smystem is
grounded.
You can confirm this
condition by operating
the camera with the
flash after
disconnecting the AC
adapter and the
computer; the flash
should then operate
normally.
If the plug is reversible, reverse
the plug where the sync cord
plugs into the flash.
Or, operate with an IR slave or a
radio slave.
You have other problems
with a flash.
A non-dedicated
incompatible electronic
flash is being used.
Refer to the section “Using a
Flash” at the end of this chapter.
Trouble Possible Cause Suggested Solution