Thank you for posting your question on Just Answer! I will be happy to help you with this problem. Can you please give us some more information so I can better answer your questions.
-How long before it goes black?
-How old is the unit?
- Do you have this problem while watching all different devices hooked to this television? (DVD player, cable, satellite, game counsel, ect.)
Please give me this information and I will be happy to assist you further.
time it takes to go black is different at times sometimes a couple hours sometimes a couple of minutes,the unit is about 4 to 5 years old,and it goes black with different devices
What does the light on the front do when it goes black?
nothing,i just replaced the bulb less than 6 months ago
So the light just goes out like you turned it off?
Does it play that samsung melody when it goes off on its own?
How long does that last before the screen goes black?
When you have that screen, if you press the menu button on the tv itself, does the menu show up?
Ok any chance you can get a picture of what this black and white dot thing is and post it to me? I am on the fence between two different parts in your set causing the problem and if I could see it I could tell you exactly. (if you can post a picture, please click the icon above where you are typing with the green tree on it. This will allow you to upload a picture)
You have no way to get a picture even after it acts up again?
IF not then its ok, just more of a guess then an exact diagnosis without seeing it.
Well if you like I am usually always around, we can wait until it happens again and then you can let me know. I can be more accurate if I can see the problem for myself...let me know.
Ok sounds good.