Please insist on replacement and nothing less. My 3rd tv too has one hdmi port that's conked out, and it is the eARC port to which my avr hdmi out was attached through a splitter. I have checked all power connections for power surges, changed all cables to 8k ones and have now sent avr and splitter to Yamaha service to check for any power issues that are causing the hdmi ports to malfunction. This will take time as service centers have just opened up after lockdown. Mi has offered a full refund as replacing another tv (will be the 4th one) is untenable for them. I have said this is not an optimal solution for me as i don't have a competing tv at this price point and will support them for a technical resolution, if offered in a reasonable timeframe. My choices are:
1. Take the refund and go back to old tv that's now doing bedroom duty
2. Press Mi for a resolution (software or hardware/hdmi boards swap). They have asked time till Friday. Hopefully, i should have feedback on my avr and splitter early next week
3. Buy a 65 inch like the One plus u1s and save some dough
Never thought i would have so many issues with my HT setup. Things worked like a charm for 7 years.