on camera flash pops up about every six seconds.

Nikon D80, less than 5000 actuation. Once camera turns on after about 6 seconds the flash pops up., followed by a click sound at 6 second interval. If left in on position battery depleats in a few hours .

Have tried to turn off the flash, have attempted changing settings by rotating dial to M,A,S,P s well as the differen screen modes. When the camera is turned off the flash will pop up on shut down. Cannot find setting to turn off flash in settings. Lens is in ttl mode, but changing the mode has no effect.

Much confused. Any suggestions, estimate of repair cost?

Thanks