I happen to have three lamp assemblys for the D535. I don't have extra internal filters but if u need a lamp filter i can pull one from one of mine and ship it to you. I remember some of u said yours had broken. all three of mine are fine.
By the way one is in use so only two available. I replaced the internal filter that someone scrounged from a broken projector for me. Prints got back to showing up at defaut 1:1 mix settings, but were not very good. This was an improvement as I was getting nothing not even debris before. Maybe operating the projector for the 200 hrs with no internal filter has something to do with it, even though I can't imagine what.
Have to admit I was not willing to go to 40 sec layer curing, so didn't test past defauts with MSM higher than 1.3 (before installing the new to me, inner filter). But even at that not even debris on a 6 hr print.
Changed to new lamp and assembly (had backup on hand) and internal filter installed, and all is well again. I don't have any idea why i had two instances of prints suddenly not being there after only about 200 hrs on two different lamp assemblys. I think the fact that my projector never had an inner filter from the very beginning has something to do with it. I will find out as now new lamp assembly and finally an internal filter to boot. We will see if i can get past the magic 200 hr mark on the v1.1 machine.
Dance like nobody's watching!