AVS Forum Special Member
Join Date: Aug 2017
Location: Working in China, home in Portugal.
Mentioned: 15 Post(s)
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that's probably dust on one of the LCD panels. Try to adjust focus and see if you can focus on the blobs. If you manage to focus on the blobs, it's almost surely dust on the LCD panel. No Chance there's any relation between this issue and the bulb.
Don't blow compressed air into the projector. If you want to clean this, you need to remove the optical block from the projector. If you're not sure about how to do it, send a message here before you try.
4,3 x 2,8m semi-blacked out media room | 2010 MacMini > Pioneer VSX-520-K > JVC RS50 (X7) > 107", 1.1 gain, white screen | JVC X30 (RS45)