Question about Canon EOS 400D / Rebel XTi Digital Camera with 18-55mm Lens

5 Answers

Xti wont power up

Got a screen said to change battery pack, turned camera off, changed pack, no power up. thought 2nd battery was dead, charged original and place in camera still no power with eithier charged battery

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Re: xti wont power up

Appears to be a defect and not user serviceable.
sorry for the news.
good luck.

Posted on Dec 24, 2007

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Re: xti wont power up

Check your battery charger . May be reading a fully charged battery and shutting off . Fixed my problem

Posted on Oct 18, 2011

Re: xti wont power up

Sue both retailer and Canon. Small claims Court no excuse for an expensive piece of equipment not to work

GMS Montreal Canada

Posted on Oct 22, 2008

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Re: xti wont power up

This is not good news!!! I am having the same problem with my 2 year old Canon rebel XT. One day it just stopped turning on... and now the battery is discontinued (you can buy new ones, which cost roughly a 100$) but the camera shop said they will not guarantee this to fix. I am NOT HAPPY!!! Canon is going to get a HUGE earful when I call on Monday. Is there really nothing we can do?

Posted on Jan 23, 2010

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Re: xti wont power up

Well, I'm the 12th user. Just wanted to post that my camera had the same issue at 13 months old. I'm about to take it in for service under warranty. Hope I don't run in to problems getting it taken care of! This site was very helpful in helping me determine the issue.

Posted on Oct 20, 2008

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I have a Canon Rebel XTI and it was working fine until one day it just decided not to turn back on. Tried charging both batteries multiple times and upon putting them in, it still will not turn on. Am I...

Sorry to hear about this. I have a similar camera and have been racking my brain about this...

My only thought...are you using the same battery charger? Perhaps the battery charger is to blame. You may be out of battery on both batteries. When you install the battery, does ANYTHING happen? Does it say, LOW Battery or CHANGE the battery? Or is it totally black? If nothing happens at all, you should probably contact Canon directly. Or purchase a new charger and see if that fixes the problem.

Canon Customer Support Center Phone: 1-800-OK-CANON
1-800-652-2666 Hope this helps!

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Hiyou might have a problem of either main pcb or power control pcd (dc/dc convertor). it is common but it cost. It cause usually come from loosen screw going around inside and short. If it is lucky, then your unit would just a fuse brown. If not, it has to change main pcb and all of computer adjustment is involved. Your local repair shop would charge you around $65 to 235.

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Canon EOS rebel XTi won't turn on. Changed batteries several times still nothing

Trying taking a Q-tip with some alcohol and cleaning the contacts inside the battery chamber. Also, you can take it to your local camera store and ask them to try it with one of their batteries to rule out if yours is dead.

Thank you.

Mar 28, 2011 | Canon EOS 400D / Rebel XTi Digital Camera...

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No power

Camera is dead i think it p fuse gone from md board.
or camera is making battery drain everytime whe you insert battery.
There could be main pcb or md baord or battery box unit.
take it to canon repaire centre and tell them to give you estimate

Jun 02, 2010 | Canon EOS Digital Rebel XTI Digital Camera

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Canon EOS 400D will not power up replaced both batteries still no go although when a new main battery is inserted and the camera is turned on the green indicator lights and will not turn off until the...

Generally a fuse blows on these, on the DC/DC converter (psu ) board. This is situated on the front of the camera, fairly easy to get at just involves undoing loads of screws!! The fuse is marked "K", replace or short out with a thin piece of wire. May be caused by changing lenses with the power on, but not sure.
Watch for the charged flash capacitor though!!
Had this problem with mine.

Dec 29, 2009 | Canon EOS 400D / Rebel XTi Digital Camera...

2 Answers

Camera wont turn on.

try replacing the battery. Check best buy, radioshack or other camera dealers for a battery. Possible deadcell battery. These lith-ion batteries die with no warning. If there is no change, the camera is defective!! hopefully htis helps

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I have a Canon SLR 400D and the LCD screen won't view anithing unless i press teh display button and the display details comes up. if anione got a solution for this problem can u pleaze write as soon as...


Screen blanking is often a part of the power saving profile. Have you tried changing this in the Tools menus? You should be able to alter the screen blanking time out to a longer period or a disabled setting. I suspect yours is very brief.

The battery packs for the Canon EOS line are very very good and can handle the screen always being on until you close it and use the view finder instead.

Let me know if this is on target or not as the only other reason would be a faulty battery pack. These packs have chips in them that send the battery strength signal back to the camera. And if the camera thinks the battery is critical low, it will default to turning off the screen right away.

Give me a hint if this makes sense in your case or not. I can check if its a known problem of your model.. So, on your camera label there shold be a version number for your 400D, that would be helpful too.


Jan 21, 2009 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

Fuji F10 No power

You said that you changed the battery, did you put it in the right way around?.

I had exactly the same trouble, changed the battery (got it on ebay for £2.99) charged it and it worked.

Having said that, I closed the lense from external power. If the camera wont operate from external power then the camera is probably dead.

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please make sure the batteries you are using are genuine.

Jul 29, 2008 | Canon EOS 400D / Rebel XTi Digital Camera

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