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				Samsung HL-R5078W, buzzing, not lamp
				Posted: Tue Jan 11, 2011 2:10 am
				by mitchwell
				I have a Samsung 50' tv that stop working, and there is a big humming sound, like "waa, waa, waaa"..sounds like it's gonna blow up.  I tried replacing the bulb with no success.  What could it be?
			 
			
					
				Re: Samsung HL-R5078W, buzzing, not lamp
				Posted: Mon Jan 24, 2011 8:54 pm
				by grayfox
				Hello,
That can be one of three things, Colorwheel, Ballast or maybe even a Cooling Fan.
If it is more of an electronic arcing sound it can be the ballast, If it is more of a mechanical grinding humming or even screeching sound this would be your colorwheel...
			 
			
					
				xhuquosg
				Posted: Mon Mar 27, 2023 9:31 am
				by JackfUp