DLP Won't turn "on" after being on & then shut off
Posted: Sun Aug 22, 2010 1:34 am
I have a 5year old Samsung HL-R7178W. When first turned on, it runs great (good picture). I can let it run all night w/ no problems - or I can run it for 15 minuets w/ no problems. The Problem is - when I shut it off, i can not turn it back on successfully until it has sat off for at least one hour. When I do try to start it prior to this time, I get a spinning-"ZZZZZZZZ" sound that pulsates louder, then softer. It will try this multiple times then eventually ends w/ all three lights blinking. Knowing that this means failed bulb, I replaced it.......no difference. Does any one have any ideas??? Any help would be appreciated.........