A few months ago I had problems with the tv doing one of 2 things. Either it would turn itself off or freeze with the black and white screen. In the latter I would usually have to unplug the tv to turn it off, but sometimes I could turn it off using the remote. When the black and white screen occurs none of the OSDs work. If I tried to turn the tv back on sometimes there was a loud sound of something trying to spin (color wheel perhaps?) before the picture would finally come up.
Based on various other DLP issues I had read about online I did the following: With the tv off for a few hours so the lamp was cool, I opened the lamp compartment, taped down the safety button which prevents the tv from turning on while the compartment is open, pulled the lamp out, and carefully cleaned out all the dust, then re-inserted the lamp. I then powered the tv on with the compartment door off and the safety button taped so that I could make sure that the cooling fans were spinning, which they were. I left the safety button taped in case the random shutdowns were caused because that button wasn't staying pressed somehow (chassis warp due to lamp heat, room temp, etc.). This seemed to fix the problem for a while as I haven't had any problems in months. Hopefully this advice will help someone else.
Recently I've been getting the black and white screen frequently. I would like to note that so far I've only had the black and white screen problem when using the component inputs, specifically both 480p/720p/1080i component inputs. I have yet to see this problem on the DVI input and am curious if anyone else has had this happen when using the DVI input. It's possible that this is an issue specific to the board that handles analog signals.
I tried calling Samsung and since the tv is out of warranty, there's not much I can do but pay to have a service center look at the tv. I don't think I should have to do that seeing as this tv is only 6 years old and it seems that Samsung DLPs have had all sorts of electronics problems. So please, if you have this problem, call Samsung and report it. Also, please feel free to reference my call #, 2010468946, so that we can make Samsung aware that it's a bigger issue than they think it is. If anyone who has this problem calls and posts their call # as well, then each successive caller can reference these other calls thereby letting Samsung know this isn't some random failure, but a trend. Currently they say it's not a known issue. If this is a widespread problem then Samsung should be held accountable and we should not have to pay to have this fixed.
We have a six year old Samsung DLP 56" television. Over the past several weeks, the television screen freezes in a black and white dotted image of the picture on the screen. Sometimes, we are unable to shut off the power and have to unplug it. Other times, we can shut the power off and the screen will be back to normal after we wait for a few minutes to turn it back on. Any ideas on what this may be?