Oh, and your chemistry teacher was right. And about your toast: if there was condensation, it was from the water stored INSIDE the bread, not water vapor from the air in the room. It was the cooling of the toast on the glass table, not the heating of the air in the room. And if you burnt your toast, it wouldn't have even happened at all, because there wouldn't have been any moisture inside.
Grrrr...sorry to have to bump this thread again. But this morning was -5C and my LCD monitor refused to open due to the annoying temp protection circuit. So I turned on my DIY 50 watt heater and it still took like 10 minutes for my screen to heat up and open. It seems that my heater is pretty much useless.
The resistors are on the bottom on the unit and I would have thought that by convection...the heat would rise and heat the rest of the unit up. Obviously my heater is not sufficient (would be even worse in -40C)...so I was wondering if you guys have any tips or advice?
Should I eBay some 10w resistors and build a 100 watt unit? How can I improve the efficiency? I remember autonode had some rugged displays that were rated down to -40C and they only had 10watt heaters.
UPDATE: I think I just figured out how to hack the temperature sensor!!! Other k301 owners might be interested to know how I did it....so here is what I did:
I applied power to the screen. Once the screen is at a horizontal position (right before it flips up), cut the power. Then I unscrewed the screws at the back of the screen and took off the plastic. There is an exposed circuit board. Look for a very small blue rectangle thing (thats the thermistor). Right beside it on the circuit board should be labelled J3 RT1. Desolder the thermistor and in its place...solder on a 10kohm resistor. I tested the k301 by putting it in the fridge (-15C) and it powered up!