My JVC tv is on a timer, How do I turn it off?

Turn off the timer in menu set

Good morning everyone I've been having a problem with my jvc Tv. I noticed that sometimes when using an app that has been downloaded to tv causes the timer to pop up with a one minute count down then shut down by itself. I turned of the osd and sleep timer, but no difference whenever an app is open and in use that's the time the one minute pop come on..

Do a reset to this TV, and then check. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.