Eos 300d when used in AV mode pictures come out black

SOURCE: Canon Rebel focus

I would only suggest you might clean the metal contacts on the inside rim of the lens....just be very careful what you use....a pencil eraser is good but make sure you clean away any shavings that might get into the camera...

SOURCE: Auto Focus Not Working

I had a same problem, Auto Focus works in all the Basic modes but it did not work in Advanced and Manual modes.  After couple of hours of frustration I found the solution. It worked for me, I hope it will work for you too.
Follow step by step instructions. Start the Camera
Go to M (Manual Mode) Press Menu Button Go to 6-th Tab Custom Functions (C.Fn) Select Clear settings Select Clear all Custom Func. (C.Fn)
This should fix your problem
Go back to shooting more and try your Auto Focus

SOURCE: My EOS 300d is not recognized by computer

You gotta download a special driver on the canon website for this camera...

SOURCE: the flash flashes multiple times but no picture

hello jdeverett669 what did yo do with this problem ? a have the same with mine now :(

SOURCE: Why is my Canon EOS

if you cant see anything on screen and you get busy massage on view finder then main pcb fault you need to replace it