@Darren15 possibly its too old but if you haven't done so allow the remote to find the code rather than entering the model number from memory there are getting on for 10 options for LG TVs. Just step through them one by one but check the code controls power as well as Volume.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
