Equipment: 20D, serial number 1120607041. It was last serviced in June 2009 to repair the shutter assembly. The grip is a BG-E2, no serial number visible. I use SterlingTek batteries.
What happens: Camera LCD flickers on and off. Usually the CF card count number goes out, not visible. To fix, I have to unscrew the grip and screw it back in. Sometimes this works; other times I have to unscrew a second time for it to work.
Other problem is what i call the "phantom clicks" - I will hear the shutter but nothing is recorded. I have to playback the images and check the CF card count to see if anything is being recorded. I've lost plenty of sports moments and some portrait shots because the camera didn't record.
What it's not: I don't think it's the battery. When the flickering happened today, I opened the battery door and then closed it, and it was still flickering.
It's getting worse - had at least two flicker-outs and three phantom clicks while shooting a basketball game today.
The question: I think that, even if was problem was JUST the grip, it wouldn't explain why I'm getting the phantom click problems. Or can that also explain that problem and thus the easy solution is to get it serviced or buy a new one?