1. Loose HDMI Connection. Loosening High-Definition Multimedia Interface (HDMI) connection on either the Display or Source end is a major reason why your Toshiba TV shows no video signal. Whenever you need to move the cable slightly for any reason, the wires become disconnected from your TV, and it shows no input.
Toshiba Firestick TV Not Working. First of all, disconnect your Toshiba Fire TV from its main plug. Wait for at least 1 to 2 minutes. During this time, press and hold the power button on the TV for at least 10 to 20 seconds. This will also drain the remaining power in the TV. Now plug your Toshiba TV back into the socket.In this video, I show you how to fix a Toshiba TV that won't turn on. Here's a couple of different methods that should fix your problems.Here is a recommende Boot up your computer with the HDMI cable connected to a TV that is already on. Boot up your computer while the TV is off and then turn on the TV. Boot up your computer and turn on TV before connecting the HDMI cable. If your TV has a Video Graphics Array (VGA) input you may have to use that instead of HDMI. OXMz.