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Rick, Camera and Video Technician
Category: Camera and Video
Satisfied Customers: 1725
Experience:  25+ years experience as a camera and video technician.
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I was happily taking pictures on my dmc lz40 when it just stopped

Customer Question

I was happily taking pictures on my dmc lz40 when it just stopped working. The screen is still on and says AF tracking in the bottom rt corner but none of the control buttons respond. I put the camera in its case and came home via a lunch stop and it was still in the same state. What now????
Submitted: 3 years ago.
Category: Camera and Video
Expert:  Russell H. replied 3 years ago.
Hi, thank you for contacting My name is***** will do my best to provide the right answer to your question.

It is possible that, with AF Tracking enabled, you need do only one thing to snap it out of its state: Press the shutter button! and take the picture.

Or, if your model has a Focus Mode switch (which you may have accidentally triggered), you change the Focus Mode back to something more usable than AF Tracking.

But in case that isn't it, and in case I haven't guessed correctly as to the problem with your particular individual camera:

Try removing the batteries, and leaving the camera on a (dry, non-humid, non-dusty) shelf for overnight. Then put the batteries back in and try the camera again.

Then try cleaning the terminals in the battery compartment, after removing the batteries, first by rubbing off with a fresh pencil eraser, then by wiping the terminals off with cotton swabs moistened in rubbing alcohol, then letting them dry off for 5+ minutes with the battery compartment door open, then try turning the camera On again.

Also some questions:

How old is the camera? in months or years since you bought it.

Has the camera been dropped or otherwise subjected to mechanical shock(s) in its lifetime?
Has the camera been operated in or subjected to, temperatures below 32 degrees F (freezing point) or above about 100 degrees F ?
Has it ever been subjected to a humidity higher than 85 % or gotten wet ?

Has the camera been operated in a gritty or sandy environment, such as a beach, a seaside, a construction site, or the like?
Expert:  Rick replied 3 years ago.
Hi. My name is*****’m a camera repair technician with over 20 years in the business and I'll be glad to help you with your question today.

This is going to require "Hands-on" diagnosis and may require disassembling the camera to troubleshoot and repair and, unless you are an experienced camera repairman, will require servicing by a qualified technician. Below is a link to a directory of repair shops, one of which should be in your area and able to help you.