Re: help with CHE
Not to ask a stupid question but did you make sure the on/off switch on the dome is on? Usually there is a switch somewhere on the cord. The CHEs heat up at a medium speed though about 30 seconds of power you should be able to either feel the heat by putting your hand under and near it, or even feeling the CHE itself. If anything remove the CHE from the dome and put a regular light bulb in it.
What kind of thermostat are you using? I know at least the Repti-Temp that I got has a green light on it which tells you when its actually on. But definitely check out the dome first, and make sure there isn't any actual on/off switch on the Thermostat if its something other than the 500R, I don't know if any are built with one in them but its worth checking.