Ok lets start ever wonder why your plasma tv set has no picture or why one night you were watching your tv set and then come in the morning to turn it on with no picture but sound.Well my friend i am here to tell you that this is a common problem with plasma tv sets, it is not the brand of the tv set or who build the tv set it is just bound to happen with time. The sad part about it is that some of the manufacturers know this but the name of the game is to make money, cant be mad with that i would like to make a little bit more money other than my fulltime job, but hey thats another subject.Moreover what can be causing this problem or why does this happen.Instead of boring you with a long article i am going to get right to the point and what is it that you can do yourself to fix it yourself.Ok this problem is coming from your Y sustain board which works with the Z sustain board to create the picture, it works just like the old tv sets with the vertical and horizontal deflection circuits.The reason that this happens is very simple after to much hours of usage by you the circuit board is like anything else (like us getting old) gets old and some of the components are not functioning like they are supposed to most of the time it is the fet transistors in that circuit that go bad and have to be replaced.Another problem that can cause this would be the tv set being programmed to a specific hour usage, this just means in simple english that if your tv set was programmed to be used for lets just say 40,000 hours before something goes bad or faulty, then that is just the way the people builded that tv set, less likely but it does happen.By this time you are probably asking yourself what can i do about this problem to fix it myself, well the first thing is to be very careful when doing it yourself, second is to aquire the service manual for your tv set from either fixya.com or eserviceinfo.com, third is to contact the manufacturer of the tv set and get the repair kit that they have for your tv set which consist of the Y sustain board the Zsustain board and the X sustain board or logic board.Once you have all this now you can do it yourself by following the instructrions on the service manual, remember to be careful and have the tv set unplugged from the wall before you service it, you should be able to change out the boards by yourself.Change the boards out and your tv set should be up and working normal again,have fun while you are doing it but be safe and save money on the repair cost.Hope this article helps whoever needs help and Thank You very much for reading.