Why is there a big brown/yellow/black blob on Vankyo projector screen?
The Blob is here. Started off as a speck and it continues growing. I received this projector from a friend and it's always been fine but recently it's been dimming out (not sure if that means I need a new bulb?) aaand started forming a blob in the corner of the screen. I ain't too tech savvy, but I'd hate to buy a whole new projector if I'm able to fix it myself or order parts for someone else to fix. Picture included..any suggestions or solutions greatly appreciated.
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