Okay, I have a Toshiba 5OL1400U tv, and lately it started acting up, the corners of the screen darkening to where it is hard to see the picture. So I look it up, wondering what it could be, and everything points to the backlight, either it is burned out, or something is wrong with the power supply board giving power to the backlight. how to connect usb to toshiba led tv. Thread starter antopaul1990; Start date Jun 15, 2018; Tags Question Lenovo Legion 5 Pro Black Screen, NO BIOS Display TV Power ON Light Comes On But No Picture Or Sound. 1 – Be sure the component you are using (Xbox, Cable, SAT, ROKU) is turned ON. 2 – Check to be sure all cable and cords are securely connected to the TV inputs and component outputs. 3 – Make sure you are on the correct input as some TV’s will show a black screen if there is nothing 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? 1- just remove the battery and turn off the charge and laptop . 2-rest for 2 min and than plug the power (Battery) back to laptop. 3. press the power key and hold it for like 1 min and restart the computer. if this does not work try restarting the computer in safe mode. For that use this guide The attached image should show the fuse on your power board. Check for continuity and see if you get power to that, once it is checked. Unplug your set to check it for continuity. Then plug it in and use your meter to check for power. Adding images to an existing question. .

toshiba tv no display