Sanyo dp50747

I have a sanyo dp50747 plasma tv. When i turn on the power there is no picture or sound, then it powers off after about 20 seconds. I have checked all of the fuses, no problems. I have visually checked all of the caps and see no bulging or fluid leaks. Anybody have any suggestions?

Plasma TV's aren't as generally repairable as LCD TV's are, the common part that fails in an LCD TV the CFL driver or tube don't even exist in a plasma. If you don't see anything obviously wrong there's not a lot to go on with a service manual and schematic for the TV.