Question about Canon PowerShot A640 Digital Camera

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I have canon a640 camera. I am getting problem regarding taking pictures as the flash is not working. I have tried it on Auto mode, Portrate, landscape and others the result is same. Please help me in this regard.

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Make sure the dial at the top of the camera is set to AUTO or the green camera icon. When you are in position to take a picture, press the left button on the circle pad on the back of the camera; it should look like a SQUIGGLY ARROW this is the sign for flash. that button should turn it on, off, at automatic based on the current lighting.
Hope this helps!

Posted on Mar 14, 2011

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1 Answer

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Think that you might have accidentally pressed the DISP or DISPLAY button on the back of your camera. This manually turns the LCD display on and off to save batteries. You would then use the optical viewfinder in its place. To turn the screen back on, just press the DISP button one more time.

But if you've already tried this, have you also tried downloading any of your photos taken with the black screen to your computer? Are the photos also black? If so, you might instead be experieincing a stuck shutter (possibly due to the cold weather).

A stuck shutter is another common failure mode for digital cameras. The symptoms of a stuck or "sticky" shutter are very similar to CCD image sensor failure. The camera may take black pictures (for shutter stuck closed), or the pictures may be very bright and overexposed, especially when taken outdoors (for shutter stuck open).

To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.

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To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.

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I had the exact same problem. You'll need to send it back to Canon. It'll cost you $87-94, but they'll clean it up, get the flash working, and make it new again. It's a good camera worth getting fixed.

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1 Answer

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In all of modes you can use "up" key to toggle between "always on", "auto"  and "off" mode for flash. (in some mode there is only auto and off.) also the flash light icon on top right of screen shows th status of flash. I hope this helps...

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I sent my camera into Canon for repair. They said the flash was malfunctioning, and there was something wrong with the flash exposure control. The repair cost about $87. It took approximately 10 days from the time I sent the camera in until the time I got it back.

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Try formatting the card once and then check it again, the problem is due to the reason that your camera's Auto focus is not working swith it to Auto mode disable Macro and then take Photos when the Green box appears on the LCD.
Joseph Manoj
+91 9352008418

Hello,
I did not recieved any updates yet try the solution i suggested and your problem will be resolved.
Regards,
Manoj Joseph
+91 9352008418

Apr 29, 2008 | Canon PowerShot A75 Digital Camera

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