Planar PD7060 overheating... bunch of questions.
So I picked this thing up recently for $60 and it's my first PJ. Guy said it needed a new bulb because it would shut off at random. Thought it'd be worth a shot to see if I could take a look at it and "fix it" because of the praise in the reviews for the unit (although he had it listed as a PD7010) and because I'm not sure my girlfriend can handle this stuff as she has a seizure disorder that she keeps pretty well controlled with meds. Couldn't get the shut down to replicate in 45 minutes of it throwing an image so I took it home.
Anyhow, first night of testing it was throwing a darn good image at about 120" diagonal onto my green wall and gave me the 1 long 3 short blinking light of "lamp over temperature". Tried it again last night with the high altitude setting (I assume this is code for MAKE THE FANS RUN REALLY FAST) on and was playing xbox 360 for about 5 hours without a problem before I gave up on trying to get it to shut down and went to bed.
So.... Can I take "lamp over temperature" to mean the actual lamp needs to be replaced (~2000 hours) or does it translate more into the environment is over temperature? I see that there's another blinking code for environment over temperature but as I don't know much about PJs, thought I'd ask. If it's the general environment or the internals of the PJ what if anything should I do to cool down the interior? I've been taking apart computers since the early 90s, if these things are similar I could probably get in there and replace/clean up anything worth replacing or cleaning, but don't want to if it'll do more harm than good. Couldn't find any useful information online about disassembly. Manual only includes a cleaning section about cleaning the PJ exterior with damp cloth or wiping the bulb with a cloth.
Both tests were done in less-than-ideal conditions with xbox 360 game cases propping up the back of the PJ so not much airflow underneath. Mounted on the ceiling it's going to be ceiling fan adjacent with a lot of airflow all around it. I wanted to get a few good looks at it before deciding if it's worth the time/trouble/money/holes in the ceiling to mount it right, run wires, replace my receiver, and project it onto a better surface. Turns out it is. Even with the age of the lamp the image it projected without any calibration onto a 103' diagonal frame made of 1x3s and stretched blackout cloth was pretty impressive.