I have a TOSHIBA 61 inch projection screen Model TP61E80. The TV is almost ten years old. It was operating GREAT. Until Last week when the screen went black. After turning the TV off and on.. The tv screen came on normal but a few minutes later it turned black again. Then a few minutes later it came back on and stayed on for hours. This was good for a couple of days. Now it stays black.... Does anyone know if this indicates the lamp needs replacement...something else or Both.... Please assist me with this matter.