I don't recommend taking the bulb out to try and clean the dust blobs. The problem requires further disassembly to fix. I've tried blowing compressed air through the unit and it only resulted in more dust blobs. I've learnt to live with it but I'm probably not far away from cracking it and calling BenQ. I think I'm slowly getting more blobs. I imagine dust attracts dust so it's only going to get worse.
3/27/14 at 12:10am