@akush
k, here's the info you've been waiting for!
1. Switch on the TV.
2. Keep TV set side vol - button pressed and press "info" thrice on remote.
3. You will get the "Start adjustment menu" and then another screen in a few seconds
4. Press "2" twice on remote.
5. Using the cursor keys, highlight the right side
of the last item "PTCT :00.00.00.00.00" :
6. Then press and hold the {MUTE} button for 3 seconds.
Time and Count will be displayed:
TIME = Hours : Minutes of operation.
COUNT = Times the set was powered on.
got all this info from HFV itself. it's buried in here somewhere. tried it on the as670 and it worked