Philips LCoS TV blinks 116 - please help.

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I have a Philips 44PL9523 LCoS projection TV. A few days ago the picture froze and then went completely blank. I SDM menu it blinks code 116 (11 slow flashes and 6 fast flashes). Any idea what this is?

I still get sound, can flip channels and even get picture signal on the "monitor out". The lamp seems to be OK.