Thanks to all for the advice. I used a 12v 4a power supply last night, and it worked like a champ. I was able to recreate the problem by taking a very sudden deep breath while using the delivered power supply. Attempted it again with the new power supply, and the machine worked just fine. I had a gr...

thanks for all of the information. It certainly gives me a good place to start.

David

Hello, New to the board. I've been using a CPAP for about 13 years now. I just recently received a GoodKnight 420E from my insurance and DME. I'm wearing a ComfortClassic Mask with Headgear, and my CPAP setting is 16. The problem that I am having is that the air pressure will drop abruptly in the mi...