I have a 10 year old Pioneer plasma TV (Pioneer PDP-R05E). When the TV is turned on, it starts with a black screen, and then some reddish dots flashing on the screen, mostly on the corners. After sometime the image starts to come from the corners processing to the middle with black thin horizontal lines moving. The blackness disappears more on lighter colors. After some hours the screen displays with no problem. Sometimes it gets more time when the house is colder, the radiator sometimes helps, but I'm not sure if it is random. The back of the TV is not warm anywhere, only the top part is warm, but not too much. I'm having the problem for a year. Once, there was no image anymore, so I have not turned on the TV for about 4 months, and when I turned it on, it was like new, the screen had no problem for one month, and then the problem got worse over time again. I'm going to call for TV repair, but it will be very good if I can have an idea what could be wrong with my TV. I will be glad if anyone can help. Thanks a lot.