Fault with its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. . Pull up older posts. http://electronicshelponline.blogspot.com/ .
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Check and replace the damaged component/s at its main board. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site by type in the brand name of your TV, at its search box at the right column. View the sites by desktop computer or by Webview by mobile. Mobile view has no search box.
im not sure but could it be a comparability issue with the device and the wake up signal from the device to the tv? android systems use a Linux based file system, so the problem may be in the tv's input settings. hdmi input from the device to the tv. and then go to tv input mode and see if putting the device in another hdmi port doesn't work.