I picked up an HL467WX off of craigslist. I plugged it in and hit the power button. There is something that spins up (very audible) but doesn't sound broken (i.e. shattered, damaged color wheel). The lamp does not turn on. However, I don't hear any clicks that might indicate a broken or damaged ballast. It cycles through its start attempts maybe 15 times and then all three lights on the front start to flash. I know that this pattern indicates a fried lamp, bad ballast, or a damaged colorwheel. I suspect it is just the lamp but is there anyway to test if the ballast is damaged or the colorwheel is bad without purchasing a new lamp first? Thanks a million.