How do you get a Toshiba flat screen out of standby mode. Technician's Assistant: Are there any HDMI cables or A/V jacks (red, yellow, and white cables) plugged into your Toshiba TV? No. Technician's Assistant: Was there a power outage recently? No. Technician's Assistant: Anything else you want the TV Expert to know before I connect you? On your PC, go to Settings and click on System. Under the Display Settings section, you will find the option that says, Rearrange your displays. Click on it, and then click on the Detect button. Once you click on the detect button, your 2nd monitor will automatically start to work normally. 2. Get a new cable. It’s possible your HDMI cable is frayed or corrupted. Disconnect it from your Fire TV device/stick and try a new one. If that doesn’t help, go to #3: 3. Check the remote. Make sure your remote’s source or input button is set to the HDMI port that your Fire TV is plugged into. 5,826 satisfied customers. It's set to HDMI2 but I pushed something on the remote and. Second opinion] It's set to HDMI2 but I pushed something on the remote and it keeps flashing DV12 1280x720 60hz and I can't get it to stop. I can't … read more. If the power board is faulty, the TV's power indicator will be on, but no sound or picture will be displayed. If after trying all of these methods and your TV screen is black, consider changing your TV's power board. Other Causes of Toshiba Tv Black Screen and How to Fix Them. Other things may be causing the TV screen to black, as follows. 8. hbZoiqm.

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