Rank: Wiz
Rating: 83%, 127 votes
From what I see at Sony, there are 2 models of the Cybershot S650
DSCS650 or VGNFS650F
Please confirm which type it is.
Sony has a great website.
If you would like to link to this page you can choose which model it is
http://esupport.sony.com/US/perl/model-find.pl?mdl=Cybershot+S650
Once you choose the model, click on it and go to the next page
on the right you can live chat with a Sony Rep, this might be your best bet on this problem. It sound mechanical to me or it is set to turn off at a particular point. This camera is designed to turn it self off about 3-4 minutes if not in use. This is the Auto-Power off function. Page 11 of the Manual. Link below
http://esupport.sony.com/US/perl/model-documents.pl?mdl=DSCS650
once you go to this link click the 5th one down under Manuals
I can imagine you can reset this in the Setup (looks like a little tool box) not sure though.
Use the links above, if all else fails contact Sony through the live chat.
Sorry I could not help you more.