My Canon EOS 20D has a problem

Hello, if you have problems with your canon eos 20d you can download the service manual from the below link you will find there useful information like disassembly, troublehooting, repair
Canon EOS 20D Service Manual Download link:
http://goo.gl/EIsEb
Good luck.

1.Remove the battery, lens and CF card. Allow the camera to sit without power for 20 minutes and then reinsert a fully charged battery.
2.Turn the camera on and push the shutter button as if you were taking a picture.
3. If you don't get the error message reattach the lens and insert the CF card.
4. Check the below canon eos 20d service manual link:
http://goo.gl/YtVLQR

it will help you to save a lot of money
Hope it helps, Thanks

Check your owner's manual to see if your camera is capable of "live view".

Hi there.
Go here and download all the drivers and software you need for canon digital camera's >>>>

http://www.canon.ca/english/index-customersupport.asp

Good luck and thanks for using FixYa!!

Try your EOS in AV (aprature value) mode. You should be able to adjust your aperature value in 1/3 or 1/2 steps dependind how you have your Custom Functions set in your camera's menu. Possibly the lens you purchased is for an EOS 35mm. If you use a 35mm lens on your eos there are some calculations you must use. When using a 35mm lens on the EOS 20D, 30D, 40D and 50D bodies, you must first calculate your focal leingth by 1.6 times. With this, your exposure changes as well.

The only EOS Digital SLR bodies that use a 35mm x 24mm CMOS sensor are the 1D and 5D. My wife uses a Tamron 18-200mm f3.5-5.6 lens on her 20D and loves it.

If this makes no difference, you may have a defective lens.

Hi there,
The autofocus mechanism on some lenses can be damaged if you manually focus while the camera is attempting to autofocus. Basically, you would be working against the motor and gears. 
There is no need to download software before using the camera, however, I would suggest going to Canon's website and downloading the firmware upgrades for it. Here's the link:
Canon 20D Firmware Download
Hope this helps!

Could it be dirt on the sensor or lens flare

So far this year we have repaired 4 Canon 20D's with this problem and it always is either the Main PCB ( the interface IC which controls the main display and which sits on the main board shuts down ) or the LCD monitor that have to be replaced so your camera has to go to Canon I am afraid ( ask for a quote as this is a relatively expensive repair ). The fault BTW cannot be caused by using non Canon lenses.

I assume that you are using a Canon battery. I wonder what blowing into the battery chamber does? My thought is that a connector is loose or a component is overheating. Either way, I would strongly suggest that you take your camera to your nearest Canon Digital repair shop. I do hoope it is still under warranty.

check your firmware version and update if necessary. Usually you get the "busy" message when your camera is writing to the card and it's possible the card isn't quite right - a format should fix it. Alternatately you might try a different CF card to see if the problem goes away. Good luck!