^ I don't know if the fan will operate without a lamp installed, or when the TV detects a failed lamp. The fan will continue to run for a few minutes after the TV is shut off. On my 60A3000 the airflow from the fan is definitely audible near the lamp housing. With everything else quiet it can be heard in front of the television as well. It's not all that loud. I'm sure they designed it to be as quiet as reasonably possible.
There is a "Cooling Mode" setting under "General Settings" that is supposed to be turned on if the TV is being used at a 5000 foot or greater elevation. I have never turned it on because my TV is at less than 1000 feet. I'm guessing that it changes some of the fan parameters (fan speed, duration of fan operation after lamp shutdown, etc.). I'm pretty sure that it increases the fan speed, and that should be audible.
I don't recall reading any fan issues in the past posts here, particularly issues of the fan slowing down.
Last edited by KC-Technerd; Today at 01:26 PM.