Canon A720is turns on, but lens will not extend
I had the exact same problem. Since my camera is out of warranty, I decided to try to fix it myself; figuring the cost of repairing it would be close to the cost of a new, better camera. If yours is still under warranty, let Canon fix it for the cost of shipping.
I unscrewed all of the screws and carefully pried open the back of the camera. Part of it will come apart easily, but for the part that wouldn't, I slid a razorblade into the crack between the pieces and used it to separate the pieces.
I was shocked by what I found. The "mechanism" for switching between picture and review mode, appears to consist of a tiny black piece of something (doesn't look like metal, but I assume it's conductive). The physical switch that you operate on the back of the camera, appears to push this away from the circuit board. When that happens, the camera goes into review mode.
I assume that over time, this flimsy piece of whatever begins to wear out and eventually won't return to the circuit board. I slipped a small screwdriver under this piece and bent it back towards the circuit board.
That did the trick, The camera now functions as it's supposed to with one exception. Now, when I go into review mode, the lens won't retract (although it will when I power the camera down). Personally, I'm fine with that, because the lens going in and out is a huge waste of battery.
One thing I learned from this is that when you leave your camera inactive for long periods of time, make sure it's in picture mode, as this should reduce the strain on the flexible "switch".
Nov 28, 2008 |
Canon PowerShot A720 IS Digital Camera