1. Check your cables
Your HDMI cable might be acting up. Disconnect it from your YouView box and TV and then reconnect it. Check the HDMI connection between the TV and the box to ensure they are secure and make sure no other cables are attached e.g. SCART.
Still not working? Try using a different HDMI cable or connect the cable to a different HDMI port on your TV.
2. Restart your box
The old “switch it on and off” routine. Overused but it can often help resolve the issue. Press and hold the 
button on your box for 8 seconds, then let go. You’ll be greeted with a friendly ‘Hello’ telling you that your box has restarted.
3. Restart your TV
A quick step this. Just turn off the plug for your TV, wait a few seconds and then turn it back on. Now see if this has helped.
4. Remove extra equipment
Not all equipment is HDCP friendly. If you are using a device (like a HDMI switch or DVD player) in between your YouView box and TV, try disconnecting it. The HDMI cable should be the only connection between your box and the TV.
If you are using an HDMI splitter or audio equipment, this may be causing issues with the HD signal authentication. We recommend connecting the box directly to the TV to check this fixes the issue.
5. Check for software updates
- Select Settings* from the Menu
- Select Software Information from Information & Reset
- Select Update Software
We'll let you know if we find any updates and start downloading it for you.
*Settings can be found via the cog in the top right corner of the Menu. You can get to the cog by pressing Up and right after opening the Menu.
6. Check for TV updates
It could be possible that your TV requires a software update. Check your TV manual on how to do this.
7. Further help
We didn’t think you’d end up here, but thanks for trying all the above steps. We’d suggest contacting your box provider for further help.