My v3 heats up even on Ac Room, so i opened it and it takes a bit longer but still stops, so i put a flat head screw on top of the control IC with heat sink paste. And while open still, it does not shut off, An as soon as i enclosed it again including the heat sink screw it last on more but eventually shuts off. So now i will drill some ventilation holes to see if this will solve the overheating.
As of this morning i change the screw to a longer one so that it remains in place between the IC and the back of the case. About 1 inch. Or 3/4. Closed the case and at this moment,no a/c the camera is working fine.
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Flat out, if you are having to do this, you have a defective camera.
From my own experience, I have only once had a camera stop working due to heat - in my attic (it was watching a rat trap) that was a measured 151 degrees at the time. I don’t know if it was the wall wart or the camera that failed, but both worked fine after they cooled down. I have had cameras mounted to the top of my windshield (often in direct sun) in my pickup for many years and never had one fail. I have cameras outside that are in direct sun in weather over 110 degrees without failure.
Many other people here have reported cameras in quite high heat environments without issue.
So if you have a camera that fails due to heat in an air conditioned room, there is a problem with that camera.
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And a possible fire hazard.
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@K6CCC , 151 degrees. wow. I believe you. I encourage you to check out installing a solar barrier. Home Depot or Lowe’s. Is simply aluminum foil 4’x150’ roll that you cut and attach to your rafters. Passively reflects the sun’s UV back towards the outside. Will drop the temp 20-30 degrees immediately. One time installation, don’t have to touch it again. Made a big difference for me.
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After 12 hours still working fine . It seem the screw dissipates the heat rather well i made ventilation orifices fir goid measure.
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Just fixed a second one, same thing , a screw heatsink, works perfect. Mase orifices also and it has not stooped working after 2 minutes as before.
Very nice. Can you drill the holes to form a ‘W’? 
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Keep in mind the measured outside air temp was 117, so it’s gonna be HOT in the attic no matter what you do. No, we don’t normally get that kind of heat here. Breaking 110 is really rare.
Wow. I need to put a thermometer in my attic. I have vents along to top of the roof and side vents. Now I am curious.
I have two lighting controllers, and two network switches, up in one point in the attic, so I added an environmental monitor so I could see what it’s doing up there. It gets cold (by southern California standards) up there in the winter too.