AF TROUBLESHOOTING SUDDENLY WITH NO WARNING THE AF STOPED FUNCTIONING AND THE ASSISTANCE BEEM IS OUT OF ORDER. I HAVE AN EOS 350D RECENTLY PURCHASED. I AM USING RESPECTIVELY SIGMA AND CANON USM LENS. TODAY AND AFTER FILLING THE BATTERY AND INSERTING THEM IN THE GRIP I TURNED ON MY CAMERA AND FOR NO APPARENT REASON EVERYTHING IS WORKING EXCEPT FOR THE AF. IF I TURN IT TO MANUEL THE CAMERA WILL FUNCTION PERFECTLY. I CLEARED THE SETTING AND RETURNED TO THE ORIGINAL STATUS BUT NO RESULT. I TRIED ALL LENSES STILL NOT WORKING. I TOOK OUT THE BATTERIES AND INSERT THEM BACK AGAIN SAME SAME IM RESIDENT IN BEIRUT LEBANON AND WE HAVE A CANON COMPANY WICH PROVIDE A REPARING ASSISTANCE WITH NO TECNCAL SUPPORT. ANY WAY THIS IS MY PROBLEM AND I NEED YOUR EXPERT OPINION. THANK YOU. GABY MAAMARY,