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Optoma EP739 Dark Corner?

Pyro225

Novice Member
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Hi all

newbie long time lurker here.

I have for about 7 years had an optoma ep739 and over the years it’s got darker and had the dust spots in it - it also started to get the top left corner have a slight dark patch not a massive issue.

anyway the bulb was due so while I was there I did a complete tear down to get rid of the dust blobs and clean it all up and man there was a lot of dust! I appreciate some of it will be the lamp but it’s about twice as bright now....

which leads to the problem - as it’s so bright now I can see my dark corner is a lot bigger than when it’s dark - I have attached a pic any ideas what it is and if it can be fixed? Thanks!
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