RCA 27R430T 27" TV
3 years and...Kaput!
I had the EXACT same experience with my TV that another previous reviewer had.  Things went OK for awhile then for a few weeks the picture would go black periodically. Then, just like with the other reviewer, one night it went black and I lost the picture and sound and it gave off a loud high pitched squeal. I also couldn't make the awful squeal stop until I unplugged it.  My experience with the repair attempt was also the same--repair would have cost more than the TV.  An inexpensive TV--but STILL.  Like the other reviewer I also went with another make this time--Sony.  Hopefully I'll have better luck with this one.