I think Sony have a problem with the projector or the Lamps, as mentioned all of the 320's we have installed have had the lamps replaced between 1600 and 2200 hours, this is not acceptable when the cost of a lamp was a few hundred £.
I think they hav dropped the cost now.
Yea ive priced around 120 for a genuine lamp ,well so they said .The projector needed a good clean hopefully it will be fine ,if not ill send it off to be repaired .Might actually get round to changing my 1080 projector lol.
Quick update,New lamp fitted and its staying on .Its going back to Sony for a proper clean and re align of the lcd panels .Turns out the Sony measures the resistance of the lamp and that's how it knows how long its been on