Hi everyone,

I have a ViewSonic PX701HD bought 4 years ago. Never had problems with it, until now that appeared some areas along the border of the image of some weird blue marks. I think that it is debris that acumulated somewhere between the color wheel and the lens because those marks seem to be shaking (maybe from the fan blowing air?).
If someone have a similar experience or an idea of what it is, I´d love to know.

Image: https://postimg.cc/Z9L8f4Dm

ADDED: I saw a post on reddit with a similar problem and the user said it was a hair somewhere stuck on the light path. He didn´t post a solution.

I updated the image url, thanks for the facebook group sugestion!