Canon Powershot A75 won't power up (dead)

1. Most likely is discharged or improperly inserted batteries. Make sure to use freshly charged AA batteries that are inserted with the correct polarity. The Inner 2 have the minus side up and the outer 2 batteries have the + side facing up.

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

4. Also remove the memory card and re-seat it, then close the cover again in case it was not fully closed.

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.

According to Canon, your camera needs servicing.

Make sure you are using Lithium batteries. Alkaline batteries will go dead immediately in this camera. I've tried it.

Are you still using alkaline batteries? If so, alkaline batteries just don't have the power for more than a few pictures in a digital camera. Some may also have reached their shelf life, and though right out of the package may even have problems just powering startup of the camera. Digital cameras that use AA's for the most part should only be used with rechargeable NiMH batteries. If you read the camera's instruction manual concerning batteries, you may see the same recommendation.

Keep in mind rechargeable NiMH batteries will save you money in the long run over alkalines, AND they'll last for at least 100 pictures per charge (and probably many many more). You'll be very pleased with their performance, and may be angry with yourself for not buying them sooner. When at the store, look on the package for a power rating of at least 2500 mah.

CCD is dead. Very common problem.
Needs new CCD.

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

there has been a recall on certain models of the powershot series. check their website to find out if yours is on the list.
http://www.usa.canon.com/consumer/controller?act=PgComSmModDisplayAct&keycode=2112&fcategoryid=221&modelid=9828

It isa pity to hear that Digital Camera Batteries for CANON POWERSHOT A75
Replacement for: KODAK CR-V3
Digital Camera Batteries for CANON POWERSHOT A75
Replacement for:

Alkaline batteries just don't have the power for more than a few pics in most digital camera. Some may even have problems just powering startup of the camera. Digital cameras for the most part should only be used with rechargeable NiMH batteries. Walmart sells these for around $7 for a package of four (about $15-19 for the batteries with charger). Keep in mind they'll save you big bucks in the long run over alkalines, AND they'll last for at least 100 pictures per charge (and probably many many more). You'll be very pleased with their performance, and may slap yourself for not buying them sooner. When at the store, look on the package for a power rating of at least 2500 mah.

Try using fully charged batteries or new batteries.