Question about Canon CanoScan 8400F Flatbed Scanner

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Doesn't turn on!

I can't get the scanner to be "on". I used it a couple of days ago and it worked fine ... has been perfect for the 2.5 years I've had it. Everything is plugged in and I just finished the driver download sequence. I have in on an iMac for the last year. Could it have "died" on me?

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  • curtiscu Jan 29, 2008

    Last time I used it it worked fine. Now I plug in the power and it won't turn on. This thing is almost immaculate from the day I bought it as I've not used it much at all.

  • gyepre Feb 04, 2008

    Have the same power problem. Scanner was new in July 2005. In Jan 2007 it would not turn on. After much searching I discovered that the power cord with integral adapter had failed. Replaced the cord and was fine until last week when the same no power problem occured. I wonder if Canon is having the same problem with many of their 8400 F units.

  • Anonymous Feb 23, 2008

    sorry...i posted the problem on the solution part...i have these same prolem...any ideas?

  • Buster777 Mar 10, 2008

    My Canon 8400 went dead several months ago; it won't turn on. Can the "engine" be replaced? How? Where? (I live in town of about 58,000; tech help of the kind I'm needing is meager.) 

  • gmac1900 Apr 27, 2008

    I'm experiencing the same problem, I've had my scanner just over 2 years and now it's completely unresponsive. I was hoping it was just the plug fuse but the adapter gets warm so the power problem is elsewhere.

  • Anonymous Jul 12, 2008

    I have the same problem. I just scanned something five minutes prior to the scanner doing "silent". I tried to turn the power off and on again. But when I turned it on, there was not "eee_unnnn" sound it normally makes when adjusting the lamp upon turn on. The little blue light is on but that's it, no other signs of life.

  • Pittsburgher Sep 27, 2008

    same problem -- the scanner suddenly will not turn on. Hurricane Ike caused a power outage here a couple of weeks ago. Does anyone have a tip?

  • gotoguy388 Nov 20, 2008

    I have the same problem. Has anybody solved this problem?

  • Anonymous Jan 12, 2009

    I used it moments before. I have used this to scan thousands of slides and pictures. Suddenly it would do a preview scan but then wouldn't do the real scan. I shut down the program, nothing. I restarted the computer, nothing. I turned of the scanner, unplugged all the cords and and started the whole thing up again. Except it didn't start up. It will not turn back on. No lights, nothing. And I had been using it just before. It just suddenly started doing this.

  • Anonymous Mar 09, 2009

    I just bought an 8400F off Ebay, still in box and taped up as if brand new. No power seems to be reaching the scanner. No lights come on, no whirring is heard, no recognition of a USB device being installed. Something is either wrong with the power supply or the connection from the lead to the scanner itself, but I have no idea how to fix it.

  • Anonymous Mar 17, 2009

    I had the same problem a year or so ago. The solution was to replace the power cord - they burn out. Now I have the problem again. Solution probably is to not leave the cord plugged in when the scanner isn't in use because there's some kind of trickle effect going on that burns out the power cord.



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I had a "Doh!" moment the day after posting my problem. As I was packing up the scanner to put it in the attic, I suddenly noticed the on/off switch on the side. I'd never noticed it before. Connecting everything and flicking it to ON made the lights come on and my scanner worked perfectly. I'd recommend switching off at the mains after every use, however, as there is something a bit dodgy about the power supplies.

Posted on Mar 22, 2009

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I had the same problem a year ago or so. The solution was to replace the power cord. I have the problem again even though I haven't used the scanner much in the meantime. I think there's a power trickle effect going on and I should have unplugged the cord from the outlet when not in use.

Posted on Mar 17, 2009

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Same as above...what to do?

Posted on Feb 23, 2008

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