Question about Canon PowerShot A75 Digital Camera

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Canon Powershot A75 won't power up (dead)

My powershot A75 was recently having power problems where new alkaline batteries wouldn't power the camera at all and my nimh batteries that have worked for two years were saying change the batteries when they were fully charged. I checked the charger and batteries and they are ok. Now the camera won't power on at all. I've opened the back case and can see two lots of pos/neg terminals (one next to the ac in and one in between the flash charge and the eyepiece. Both show 5.2 volts, so I think the power is carrying though at least that far. The lens doesn't appear to be stuck because it won't power up in play mode and I have tried tapping the lens in shoot mode. Can anybody help. Thanks.

Posted by John Muldowney on

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Anonymous

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It is worthwhile testing your batteries. My new charger showed that two were duds. I replaced these and now the camera is fine. My former charger did not real the problem, and I was about to give up and take the camera for repair.

Posted on Dec 07, 2011

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Anonymous

Hey - thanks for the advice. Same problem with my daughter's A75. Problem has been slowly evolving and today the camera wouldn't turn on at all. I removed the contacts from the battery door - 2 tiny screws - and cleaned the contacts with an emory board and also used a tiny screwdriver to raise the prongs of the contacts. Put in fresh batteries and camera fired right up. Hope it helps for you . . . .

Posted on Mar 12, 2007

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Anonymous

Have you tried cleaning the contacts

Posted on Mar 10, 2007

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Camera won't turn on

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2. Close the battery door fully because the battery cover pushes on a small sensor that has to be closed before the camera will turn on. The battery cover slides and clicks into place. If the battery cover sensor is bent or damaged then the camera would not turn on. The battery cover sensor is tiny, and out of the way and probably not obvious that is has one.

3. Insert the proper memory card and close the memory card cover securely. If it's left open or not seated fully the camera may not turn on. I

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5. Remove the batteries and check that the battery terminals are clean and they appear to be intact. For example, corrosion from leaking batteries could cause a poor connection.

6. Was the camera dropped? If it was dropped that can bend the metal battery contacts, then when you put the batteries in it doesn't really contact the battery properly.

7. If it still won't turn on have an electronics guy check it over, or at the local college electronics teacher. I've fixed these before and the main DC circuits are not too complicated. These camera's can even be powered up using a regulated 6V DC power supply connected properly to the battery terminals, (just for testing) and in that case you don't need batteries to tell that the camera works or not. These draw about 300mA of current when ran from 5V to 6V DC.

I attached a JPG photo showing a similar Canon A60 running via a DC power supply and no batteries. This one was apart at the time to fix a stuck zoom lens, and when it's apart there is no where to put the batteries so I have to power it this way.

You do not have to take it apart or use this method. I just mentioned this so it's clear that all it needs to run is 5 -6V DC from properly charged and inserted batteries (or an external source). Don't try connecting anything if you are not familiar with electronics because connecting it up wrong can damage the camera. Try the suggestions mentioned early and it will probably work since these are pretty reliable cameras.

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Here are some simple things to try first for a camera that won't power on. They won't work for every case, but they're worth a try:

http://camerarepair.blogspot.com/2007/11/simple-fix-for-dead-cameras-that-wont.html
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Shut off

Try using fully charged batteries or new batteries.
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