(08-17-2019, 01:31 AM)chill Wrote: The blower speed changes: increases as you inhale, decreases as you exhale. That generates more noise, or at least different noise, and maybe that is masking the sound you are complaining about.Your description of motor speed changes would be consistent with the noises I am describing. It almost sounds like a sports car shifting but WAY off in the distance.
My machine, when operating normally, is perfectly silent, not a sound at all.
(08-17-2019, 01:31 AM)chill Wrote: It sounds like something loose (no idea what), vibrating from the blower or the bearings starting to wear out. Are there even any bearings in these things? I've tried trouble-shooting some odd noises before, it can be very frustrating.Something is vibrating, whether it is the motor itself or some sort of components inside. I am tempted to get my tiny-item tool kit out and start taking it apart if it is possible. If I can discover something loose I can assess the situation. I will only dissemble to a point and then go no further- do not want to have something go wrong to the point of no return.
Can anyone comment on maintenance of these things other than filter? Should I have done a 1,000 hour service of sorts? I feel lucky that I had very little issues with PAP therapy once I found my sweet spot of settings. I literally have not even looked at the screen or months for for any information... I have no reason for any need to get in there. I should toss up a chart though, it has been perhaps over a year since asking for opinions. I bought a new computer and need to get the Sleepyhead program on here.
The noise is so very slight and definitely not like when I first got the thing. It really does not matter how loud or not loud it is in a subjective way, the fact that I hear it and it bothers me is the real matter.