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Projector noise at start up

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Old 09-26-2014, 06:10 PM   #1
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Default Projector noise at start up

Hi, I have a Mitsubishi HC1500 that is about 6 years old. Recently it started making a buzzing noise at start up like a street light would make... It quiets down after about 3-5 minutes. The picture is fine... I replaced the lamp assembly (with OEM) about a year ago before end of life as a spare so I swapped the old lamp back in, but same problem. I blew out the projector (it was pretty clean from changing the lamp) with compressed air, no help. Seems like a ballast problem maybe? Any problem determination ideas or other help would be much appreciated!! Thanks!
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Old 09-26-2014, 06:16 PM   #2
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Sounds like a ballast issue to me, keep an eye on it but if it quiets down and is operational count your blessings
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Old 09-28-2014, 11:38 AM   #3
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Thanks for the perspective! I was wondering if it made sense replace the ballast then; could it affect lamp life or cause some more catastrophic problem?
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Old 09-29-2014, 08:58 PM   #4
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Personally I would replace the ballast as when a ballast fails, bad things can happen.
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