G 25 inch golden eye TV - automatic high volume when switch on

[Hitesh]

Hello everyone,
I have an LG 25 inch golden eye TV (7 years old). Starting a few days
back, many a times when the TV is turned on, the volume level
automatically becomes between 80 to 90 out of total 100. At the time
of switching off the TV, the volume level normally remains in the
range of 20 to 30.
The observed behaviors are:-
1) It does not make any difference whether the TV is switched off
using remote or its own power button.
2) The TV channel does not make any difference.
3) The volume does not always go high when the TV is switched on. But
it happens frequently. Normally it happens after the TV remains
switched off for a longer time. Sometimes, it happens for shorter
switch off periods also.
4) If the TV is switched off after being "mute", it gets switched on
with "mute" only.
5) Once the TV starts with such a high volume, the volume buttons/keys
on TV panel/remote work normally and I have to bring back the volume
to the range of 20 to 30 from the initial volume of 80 to 90.

Any idea, what could be the problem.

Any help will be greatly appreciated.
Thanks and Regards,
Hitesh,
Delhi, India