Changed colorwheel after T.V. turned green and blue then blank screen with loud banshee like noise. After changing colorwheel the lamp wouldnt light up so I installed a new lamp, but still when I plug in t.v. it tries to power up three times with blinking lamp light then results in all three lights blinking. Rechecked connections several times, made sure blue switch is down, hear clicking of board trying to power up lamp, but not sure if colorwheel is spinning or its just the sound from cooling fan. Any information will be helpful....thank you.