Canon EOS 400D will not power up replaced both batteries still no go although when a new main battery is inserted and the camera is turned on the green indicator lights and will not turn off until the battery is removed
Cameras - Canon - Eos - EOS 400D / Rebel XTi Digital Camera with 18-55mm Lens
Answers & Comments
Generally a fuse blows on these, on the DC/DC converter (psu ) board. This is situated on the front of the camera, fairly easy to get at just involves undoing loads of screws!! The fuse is marked "K", replace or short out with a thin piece of wire. May be caused by changing lenses with the power on, but not sure.
Watch for the charged flash capacitor though!!
Had this problem with mine.
Phil
I have a canon xti and will not power up put two new batterys and nothing.?