Re: Norstar NT5B01 power supply

I've got an NT5B06 unit (from label NT5B01FD-93) that I'm trying to keep alive for the business I work at. The unit is in hot computer rooom, where the temperature is elevated (an issue in itself). The unit will stop working when the room is hot...I discovered I can keep the door to the room open and use a box fan to blow cool air into the room and the unit will start to work...at first, it would work a few minutes then shut off (blinking triangles on the handsets), then, I unplugged a few handsets and kept it cool and the system will not work continuously...