going by your description alone my number one suspect would be the power board. Let us know if your TV shuts completely off or if it just the screen that turns black. Also, try multiple input sources. Something a bad cable box etc. can cause this as well, Remove the back from your TV and check all the boards. Check for damaged looking components etc. Post some images of your boards with your question so that we can see what you see. [guide|21499]
+
going by your description alone my number one suspect would be the power board. Let us know if your TV shuts completely off or if it just the screen that turns black. Also, try multiple different input sources (one at a time)and see if it still shuts off. Something like a bad cable box etc. can cause this as well. Remove the back from your TV and check all the boards. Check for damaged looking components etc. Post some images of your boards with your question so that we can see what you see. [guide|21499]
'''++@omputers++'''
going by your description alone my number one suspect would be the power board. Let us know if your TV shuts completely off or if it just the screen that turns black. Also, try multiple input sources. Something a bad cable box etc. can cause this as well, Remove the back from your TV and check all the boards. Check for damaged looking components etc. Post some images of your boards with your question so that we can see what you see. [guide|21499]