Why doesn't my Toshiba 43L310U TV turn on when I turn on my device?
- NNancy ThomasSep 1, 2025
If your Toshiba TV is not turning on when you turn on your device, ensure that the HDMI-CEC Control feature is enabled and that TV Auto Power is set to On.

Why doesn't my Toshiba 43L310U TV turn on when I turn on my device?
If your Toshiba TV is not turning on when you turn on your device, ensure that the HDMI-CEC Control feature is enabled and that TV Auto Power is set to On.
What to do if my Toshiba 43L310U TV has no power?
If your Toshiba TV has no power, ensure the power cord is plugged into a working outlet. If it is, unplug the cord, wait 60 seconds, then plug it back in and turn on the TV. Also, other devices like surround sound receivers or fans might be interfering with the TV.
How to fix 'No video' error message on Toshiba TV?
If your Toshiba TV displays a 'No video' error message, press the INPUT button and select the correct input for the device or service you are using. If you are using a cable or satellite box, use its remote to change channels.
Why does my Toshiba TV have a picture but no sound?
If your Toshiba TV has good picture but no sound, first increase the volume and make sure the sound isn't muted. Ensure headphones are not connected and that the TV Speakers option in the Sound menu is not set to Off. If using a home theater system, sound bar, or external speakers, ensure they are on and not muted. If connected with a digital optical cable, check the Digital Audio Format in the Sound menu. Also, ensure all audio cables and the antenna or cable TV are correctly and securely connected. Finally, the audio cables you are using may be bad, try a new set.
Why is the picture quality on my Toshiba 43L310U TV good on some channels and poor on others?
If your Toshiba TV has good picture quality on some channels but poor on others, it may be due to a weak signal from the broadcaster or cable TV provider. If you're connected to cable without a set-top box, consider installing one to improve signal reception and picture quality.
Why does my Toshiba 43L310U keep turning off?
If your Toshiba TV keeps turning off, make sure that the sleep timer is not turned on.
Why do the control buttons on my Toshiba TV not work?
If the control buttons on your Toshiba TV do not work, make sure that the Panel Lock option is set to Off. If that doesn't work, unplug the power cord, wait a few seconds, then plug the cord back in and turn on your TV.
Why is my Toshiba 43L310U TV screen dark but the sound is good?
If your Toshiba TV displays a dark, poor, or no picture but the sound is good, try changing the channel. Make sure the antenna or cable TV is connected correctly and securely. Adjust the brightness. Press the PIC SIZE button to change the aspect ratio. If using an antenna, adjust it for better signal strength. Check that the video cables are connected correctly and securely. The video cables themselves might be faulty, so try a new set.
How to fix a Toshiba TV remote that is not working?
If your Toshiba TV remote control isn't working, first ensure the TV's power cord is plugged into a working outlet. Then, make sure there are no obstructions between the remote and the sensor on the front of the TV. Point the remote directly at the sensor. Remove the clear plastic wrapping from the supplied batteries, ensure they are installed correctly, and replace dead batteries with new ones.
| Screen Type | led |
|---|---|
| Features | gametimer |
| Tuner | digital |
| Screen Size | 42.5 inches, 43 inches |
| Refresh Rate | 60hz |
| Brightness | 240 candela per square meter |
| Surround Sound | dts trusurround |
| Speakers Output | 14 watts |
| Number Of Speakers | 2 |
| USB Ports | 1 |
| RF Antenna | yes |
| Headphones Output | yes |
| Digital Optical Audio Outputs | 1 |
| Analog Audio Outputs | 1 |
| Component Video Inputs | 1 |
| Composite Video Inputs | 1 |
| 3D | no |
| Power Consumption | 108 kilowatt hours |
| Depth with Stand | 9.4 inches |
| Height with Stand | 23.9 inches |
| Width with Stand | 38.1 inches |
| Net Weight with Stand | 17.2 pounds |
| Depth without Stand | 3 inches |
| Height without Stand | 22.4 inches |
| Net Weight without Stand | 16.5 pounds |
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