Optoma UHD51a noise
I have a refurbished Optoma uhd50 and 2 months ago a high pitch noise started to come out from the unit. I'm about to sell it. I saw on this forum (and others) that I'm not the only one to have this problem.
I'm thinking to get a refurbished Optoma uhd51a, I know that it's almost the same unit but I can't find anyone complaining about the same noise as the uhd50. Do anyone have any advise on this?