how old is the TV? It may be electrolytic caps gone bad(ESR).

I should have mentioned: it's about 4 years old.

As far as my skill, I can do simple troubleshooting with a multimeter,
and I can do basic soldering, replace caps, stuff like that.

I was hoping that over the past 4 years small LCD's would have come
down in price more than they have, but it seems they're still not
"dirt cheap." So if it's a fried power supply, it may be worth
repairing.

Thanks for the quick reply.