Top 20 Canon EOS 400D / Rebel XTi Digital Camera Questions & Answers

Hi, please make sure that canon isn't blocking certain batteries from being used. You can also check that the batteries work by placing them into other devices and testing them. If you have an adapter please use that to attempt to power the camera. Thank you.

The only thing I can think of is a card format. Do it once in the computer and once in the camera. After that do a factory reset for the camera settings then set the image quality to Large jpegs. Also try Googling the strange file extensions a see what info you can get.

A camera is a very complex device so any internal damage would need a proper repair, it may only be a disturbed internal problem but with fiddly screws and the need to keep dust free a good repair place is needed. As for you just check and refit any items you can like a card or battery etc, if new and bought with a credit card there may be an insurance on it or you can call on or contents policy maybe, as there are lots of policies on new items for a short time in respect of damage claims. If a cheap cost to purchase and not worth the cost of repair then auction on ebay to recover some money. Sorry, hope that helps you decide..........

Probably a bit of wear & tear on the mini usb socket in the camera.. Put the card in a card reader on the computer just to check it's not the computer

Refer to your users manual. All symbols are defined in the manual. Need one? Download from Canon website.

Take it to repair but ask how mch should cost to repair, might be more then your faulty camera

Disable the function in the camera main menu

How old are your batteries, and are they Canon brand or a cheap eBay type off brand? Most times we see this the batteries are old and won't hold a full charge or are cheap off-brand ones. Has the camera been exposed to intense moisture or fallen into water. Water damage can drain a battery quickly. There is a software adjustment to set the battery inhibit voltage, but you will have to take your camera to Canon as it is proprietary software only they have also check for bent CF pins

Err 99 Some other fault. There is something wrong, but the camera does not know what. This number is for all errors the camera can't handle. Try the normal "reset" method as follows: Like a cold boot for a computer, the camera can be "rebooted" follow the following steps: Switch of the camera and remove the battery. Remove the memory card and the lens. (if possible) Recharge the battery. Wait till the indicator on the charger indicates the battery is fully charged. Check all contacts, if they are clean and shiny. Contacts (from battery and memory card, only to be cleaned with a dry cloth or cotton swab(s). Reinsert the battery, reinsert the memory card and re-attach the lens. Then switch on the camera. If this does not help, contact a certified Canon repair centre.

Tr5y a factory reset on the camera. And try another Memory card.

Sorry I only have a such manual, but on the drawing it says Focusinstellingsknop (pag. 30). That switch, on the lens, should on AF and not on MF. Did you check that one? All EOS lenses do have such a switch.

In the menu you will find a setting that says remove all camera settings.

Not sure in which context this refers to but it could mean the resolution of your image 600 pixel by 600 pixels.

It may be the lens try a different lens at your nearest photography shop as the auto focus is usually a lens problem. other wise try resetting your cam remove all batts including the lithium one and the CF card wait about 20mins then replace if prob still persists then try again without any lens and see if it trys to focus and make sure the shutter is working if its ok so far then u need to try a new lens at local shop and then if it works the body is ok if not then it needs a service!

Did you remove the USB cable? As long as there is an USB cable in the camera, you can't power it up. Then you still have to check if the battery is still in good order. Batteries do have a limited time of life. And you only can be sure it is charged, when it works in another (same model) camera.

Have you tested the batteries and also is the back up battery charged? Is the CF card inserted correctly if so then time to visit your local photo shop!

Is your camera always in the auto mode? Try to put the main dial to P. Your camera is almost automatic, but won't use the flash, unless you put it up yourself. If your flash pops up, even when the camera is of, you have a mechanical problem. Something broke off.

No there isn't Ian. What lens are you using just out of curiosity? There have been the odd issue with Tamron lenses causing error 99s constantly. Check your firmware just to be on the safeside - and keep it up to date if you can. Firmware is designed to iron out little kinks such as errors and other anomalies.

The file system on your CT memory card can be corrupted. It only takes one second, when you not watch the access light on the back of the camera, when you pull out the memory card. If the card does not contain any pictures, just try to format it. If it won't work in the camera, try to format it in an external card reader connected to a computer with an older operating system then Vista. Give it a format FAT 12 or 16 for the smaller CF cards (less than 2 GB) and FAT32 for the bigger ones. If this works, don't forget to let the camera do a format to, just to make sure the card can be used by your camera.

This is why I do have spare cameras. I don't think you can repair this yourself, but you can try ifixit dot com. There they have manuals, with pictures, instruction videos and lots of other things to show how to repair a camera (and other stuff) On the site you have to look yourself for the Canon camera or one that looks like the XTi The switch not only powers your display, but inhibits the camera to work normal, to avoid memory failure caused when the battery is removed. Success