My Sony VPL-HW65ES with 552 hours on it has recently started flickering constantly. I feel like it's going to induce a migraine headache if I watch it. I've read people suggest putting it into "high lamp mode" to make it stop, but I can't seem to find any menu options related to changing lamp mode. I've tried raising the brightness in case this is what people are referring to, but it hasn't made any difference. Can you please tell me how to put it into high lamp mode or otherwise make it stop?