My Pioneer HDTV Proyection Monitor, Model # SD-533HD5, S/N BIPM010170UC and MFD Sept 2002 will not turn on. It was purchased from a Wal-mart, as a display and I do not have a manual for the TV. The MAIN button is pushed in and the RED STANDBY light turns on, then the Power button is pushed in which switches to the ON GREEN light, but it immedialtey goes back to the RED STANDBY light. Do not know what to do. The screen nor the audio will turn on.