It all of the sudden doesn't work! Samsung TXM3098WHF 30" TV?

We have a Samsung TXM3098WHF 30" TV that is less than 5 years old. We paid $1200.00 for it and have taken very good care of it. This morning while I was watching TV, it had a blue-like zap on the screen and then powered off. Now if you turn it on you hear about 5 seconds of audio with a black screen and then it turns itself off again. UGH! Samsung doesn't have a customer service hotline and the store we purchased it from is no longer in business. Researching on the internet has led me to the conclusion that this model has discontinued. Help! Any ideas???