Re: Camera powers off automatically once turned on - lens...
My S4, which admittedly is 4-5 years old and looks it, has given me intermittent problems for 2 years or so with the lens sticking out. I have always been able to fix it by power cycling.
However, recently it seemed there was nothing I could do andI was getting ready to junk it and buy another one. Then I searched online and I was able to fix it. I knew nothing about MENU+ON or MENU+FLASH+ON sequences (are there others you know about)?
Anyways, I got the hint from a post which suggested this sometimes happens when the battery is swapped while the power is on. I was fiddling with a bunch of things when I think what fixed it was this sequence:
1. remove battery
2. hold down MENU (or possibly MENU+FLASH; I was trying both)
3. insert battery
Now, my fault was such that the power always seemed to be on when the battery way in. If this isn't the case with yours, then you may need to hold down POWER ON as well in step 2 (which might mean 3-4 hands required).
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The lens may be out of position, or there could be dirt/dust in the lens mechanism. You could try some of the following suggestions:
1: Switch on the camera while you hold the shutter button and connect it to the AC adapter or to the USB cable at the same time.
2: Now by default the lens should get properly aligned if not try to twist them slightly by holding down the camera lens with soft hands.
3: Just push and pull the lens slightly as it extends automatically.
4: Now when the lens is in the hard surface power on your camera.
5: Try to hit the camera softly beside the lens which might solve the issue.
If the camera was operating properly before the zoom error then the most common problem to a stuck lens is dirt getting stuck between the two lens barrels. There are a few fixes for this none are guaranteed to solve the problem and should not be attempted if the camera is under any type of warranty. They include removing the batteries for a few minutes, reinstalling the batteries with fresh once with full power, turn the camera on while holding the the zoom button. Another method is to see if you can provide extra power to the focus motor by having the LCD screen turned off. There my be a button that allows you to switch from the viewfinder to the LCD screen switch to the viewfinder and try several times to focus (just point the camera at different distant objects) and attempt to focus the camera. I hope this gives you the results you need because the other suggestions may further damage the camera and are only a (last resort) thing. One is with the camera turned on tap the body on a counter or table edge while trying to zoom the lens obviously in the opposite direction to where it's stuck. The last is to gently push the lens in with the palm of you hand while zooming in. All these are just suggestions and carry no guarantee of working and may further damage the camera. The biggest cause of this problem is dust from a camera bag or some other environmental condition like sand from a beach.
Here are some ideas. Once I solved such an issue on a camera that had fallen down on a hard floor (by applying force on the lens to make it retract)..but please read everything here first *before* you try that: http://www.wikihow.com/Repair-Lens-Problems-on-Your-Digital-Camera
There may be a few things preventing the camera from taking a picture. I don't know the lens you are using but by chance does it have an auto/manual switch that has been switched to manual? Also make sure the lens is locked in position. The camera won't take a picture unless it has focus in the auto focus mode, this is normal. What are you trying to focus on? The camera auto focus system will search and fail to auto focus on surfaces that have little or nor contrast. For example glass, chrome, a blank wall, water, blue sky. Other conditions that auto focus fails is being to close to your subject, heavy fog, a dim lit subject, available light and night photography. Once the little green confirmation light comes on the camera has focus and will operate as it should.
lens assembly (barrel unit) struck up. slightly push lens while power off & pull the lens while power on. repeat this 2 to 3 times it will works. dont apply any oil in the barrel unit. but you may use body spray or room spray to solve this issue permanently
Upon startup lens emerges but when screen appears it is white whereas it normally displays whatever the lens sees.When the shutter button is pressed the camera will focus and take a white picture which can be deleted.The camera does not flash although flash is set to automatic and photo taken in a dark room.Camera flashes (weakly) with flash set to manual on.Lens is unobstructed and appears to be perfectly normal.Camera was not dropped.Batteries have been changed.
A temporary fix to power up is to press the menu and power button at
the same time. When the lens is extended and it beeps, on my camera ,
the lens is *stuck* Give it a gentle tug , then try the power button
Do you hear any unusual friction noise while the lens assembly projects out.. if so then the traction assembly of your zoom barrel has developed mechanical obstruction, in which case it has to be serviced. Take it to the service centre and the problem will be solved. If the zoom assembly does not fully extent to its homing position, the camera retracts and lens and powers itself off. Enjoy