Hi, I have an LG OLED55E7 which has worked well for 8 months, but in the past few weeks the family have noticed a few glitches, most annoyingly the TV putting itself into standby at random times. Usually a few seconds are switching it on, but it has occurred after using it for a few hours. We've also had buttons on the remote control not working (channel up/down), and also mute and volume up/down not working (it displayed the mute and volume graphics on the screen but still output sound at constant volume). I'm wondering if these issues are the start of some kind of hardware failure, or whether a recent firmware update has caused them. Has anybody else noticed these strange problems in the past few weeks? Thanks very much, Graham.