Bob Loblaw:
You will need to open er up and do some old fashioned troubleshooting and
testing...... or take it to a service shop.
A good place to learn more about television failures and repairs is at
the website for this newsgroup at
http://www.repairfaq.org/
There, with some searching and reading, you will find a wealth of television
troubleshooting tips, component testing methods, repair procedures, and
IMPORTANT safety information that will help you to stay away from the very
dangerous and LETHAL electrical shock hazards inside. Be very careful,
these hazards can still be present even when the television is turned off
and unplugged from the AC power.
If, after reading through the repairfaq website, you are still not certain
how to proceed you might be best advised to TAKE your television to a
service shop for at the very least a repair cost estimate so you can make an
intelligent repair decision with facts instead of telephone or internet
guesses.