by snapshot2 Moderator - 3/5/13 6:46 PM

In Reply to: Canon Rebel t3i Screen issues, need help by samzabar

It is possible you may have inadvertently set something that is causing the problem.
Before you send it off I suggest you do a factory reset.
See page 176 in the manual.

If that does not help, you should call Canon Service and talk to them.