You can reset the counters, but this invovles getting your hands dirty and having access to a service suitcase: If you replace the chassis the counters will restart.
In some rare cases some counters remain at zero.
But, in general, you can trust the counters to be correct. Remember that you have to watch or listen for 24 hrs for a counter to show 1 day, but 3 days is very little usage for such a great tv!
Roger