Hi Lauren, Further to Tony's response...there are also thermal fuses that shut the power off to a drawer if the power (or temp IDK which) as a safety feature. So quite often we find one warming drawer or the other can be reset by powering the unit down for a couple of hours. It normally works fine after that...but not always. When powering down doesn't fix it we call biomed engineers to come with their volt meters and spare fuses to fix it. We have also had heating elements "die" and in that case the whole drawer must be replaced because the element is affixed to the bottom of the drawer. Hope this helps, Greg
-- *Greg Dobbin* 1205 Pleasant Grove Rd RR#2 York, PE C0A 1P0 *Everything in moderation...even moderation itself**!* _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet