Question about Optoma MovieTime DV10 Multimedia Projector

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Loud humming after turning on.

Loud humming when using projector with any source other than DVD play. Seems to get a little better when putting pressure on top left front area of machine. What could be causing the noise?

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I have sort of the same problem...there was a loud snap(kind of electical spark like) then the unit started humming loudly which changes sound as you move the unit around. The picture remains clear and the fan is quiet in shut down mode...still the wheel you think?

Posted on Nov 02, 2009

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Normally, loud humming in the speakers is indicative of electrical noise being picked up by the audio circuit. A common cause--with 2 separate pieces of equipment joined by signal cables, is a grounding problem(the cables act like antennas). Your projector is a DLP model...inside, there is an extremely fast-spinning color wheel(rotating disc that generates the color image). My concern is that the "humming" you hear is actually the color wheel rubbing on something--especially since putting pressure on the unit relieves the noise somewhat. Was the unit jarred or impacted? Sometimes, external cables can slightly flex internal boards(and space is tight in these smaller units) and cause things to touch that wouldn't ordinarily do so.--Just some thoughts---Rick

Posted on Sep 09, 2009

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Posted on Jan 02, 2017

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