I found the site and page by searching fan noise on this cam...fwiw lol. Read about 20 pages straight and see everyone "gets it", so this is probably a moot post, but maybe interesting for some anyway. This camera got a pretty good testing first time out while storm chasing.
Got some lovely fan noise while recording an EF4 tornado on the first day out with it. Just figured it funny, considering how many times I read you only hear it in a quiet room, and here I'm a few short blocks from the edge of a violent tornado, blasted by wind and rain and all you hear on the video..."whinneeeee". Not a bad copy either, as I think I figured out what made it so bad.http://www.youtube.com/watch?v=RkBWuYAznds
1 minute in you can hear it kick up above everything else going on. This sorta noise scared me, obviously.
I tried(did a test) what was tried by some posters in this thread. I first let the camera sit on the floor for an hour and warm up. Not recording anything. By the way that was not shot in 60p either, just 60i. Anyway, did the same setting on the test just now. Soon as I picked up the camera after it sat running, not recording, for an hour I could hear the fan was on and it was warm. Shot video then covered the mic like was shown on here. Crap does that make it loud. I then tried the LCD shutting thing. This made it almost as loud, but what it also did was ramp up the speed the instant it was shut. So evidently don't shut the lcd and don't cover the mic.
And this is what I am hoping caused such a whine to be heard in those conditions. I hope it was just from the mic area being covered in water.
I realize this was all already covered. Just thought some might find hearing that whine near a tornado interesting.
During this chase the camera got a severe rain testing, which thoroughly impressed me as I was certain I was going to kill it.http://www.youtube.com/watch?v=P-fecMzXSnQ
(close tornado and strong wind driven rain into the camera) (don't use them for iq obviously as I window media'd them then let youtube have its way with that)
It was around 35 minutes for an event but there's 6 of it chopped up. I can't explain just how much water this camera took, horizontal wind driven rain. I kept thinking, I'm going to kill this camera. This on its very first time out. It's mounted to my driver's side window with a clamp. So it is out there. The LCD is open. The LCD and that inside part of the camera was as if you took a garden hose and sat there and sprayed on there for a good while. The first crossing was like that on that video. And then the second crossing when that whine kicks in was the same story, left to right rain right on the camera. You can even hear the mic starting to drown in there. And that I think/hope is why the whine is THAT loud.
The video doesn't really even show how wet it was. The rain going left to right real hard isn't hitting the lens much, with the lens in a bit and the small hood on helping. It's just freely covering the lcd and camera though. I couldn't see a thing on the LCD it was all water(really wish the camera at least offered an infinity lock for focus).
Ordered a cheap mic hoping to prevent such garbage sound via whine, at least not picking it up so bad.
Anyway, I only shot in 60i and am amazed by the video. I've had a Sony HC1 and a Canon HV20 and never cared for them much. Liked the Canon over the Sony. But for once I feel very pleased with a camcorder. Can't wait to do 60p, after upgrading premiere I guess...sigh.