How to disassemble Canon PowerShot A550 - Canon PowerShot A550 Digital Camera

SOURCE: lens error message Canon Powershot A550

Canon A550 and A560 have the same body and most of the internal parts, including lens assembly are the same. Canon won't sell individual parts within the lens assembly. There could be two possiblities. One is (unlikely) that the lens assembly components have been knocked off from their position. The other is that because of a knock, or dropping the camera, the gears in the gearbox of the lens assembly are broken. These gears are the same as the ones in A530/A540, and are available from ebay for $12.50 including shipping. Checkout my site for how to open up the camera and the lens assembly to replace these:

http://pkrobot.freehostia.com/MiscElectronics2.htm

For A550 and A560, if you take it to the professional repair shop, it might not be cost effective, since it might cost around $90. Canon does not sell gears, so they might have to replace the entire lens assembly. The new camera is available these days for around $140.

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SOURCE: Canon Powershot A550 flash will not work it just blinks on & off?

Hi
There are several things that could cause this. 

1- Check the battery door indicator switch under the battery door and beside the memory card slot. Is the little black switch damaged or missing? Try pressing down gently using a pen it with the door open and then press the power button. Does it turn on?

2- The fuse has blown and needs to be replaced. Offhand I don't recall where it is on the SD750 PCB or how hard it is to solder on a new one (depends on if its tricky to get at or not). Good thing is fuses are really cheap.

3- Other power problem with the PCB due to corrosion or impact damage. The PCB or 'motherboard' of the camera will need to be replaced.

CameraR

• 4738 Answers
• Posted on Dec 12, 2009

SOURCE: canon powershot a550 lens cover damaged can this

It might. You can possibly repair this yourself with the existing parts if they're all still there. Please see this blog article discussing repair of automatic lens covers.

SOURCE: for the Canon PowerShot A550, card is locked

Pop the card out of the camera- there's a tiny switch on the card that locks it so you can't write over important photos.  Move the switch to the other position and you should be good.