Puck drops HDMI input at start up

[Steve728]

When I switch on the TV and puck and then navigate to a tv channel from the Sky Home Screen, the HDMI input always drops and the screen goes blank. I have to re-select the Sky Q HDMI input from the LG TV remote and then it works and problem goes away-until the next day when I turn TV on and it happens again. 
Any help grateful received -I've tried a re boot etc and puck is hardwired to a 500gb Vodafone router. Help!

[-Heather-]

Hi @Steve728, I’ve escalated your post to our Community Messaging team who will invite you to a private chat shortly and help you with this.

Just look out for the colourful bubble to start the conversation. Please be aware conversations automatically close if there is no response within 48 hours.
 

Here's more information on how Community Messaging works - https://helpforum.sky.com/t5/Did-you-know/Escalating-a-post-to-a-Sky-expert/ba-p/3711147#M141