White powder in my machine

Heck look for a vauto on craigslist and offerup.com, one popped up here in bradenton for 225, says new out of box, on offerup.com, always gotta check the hours though. Picked up an asv for 250 that's been going strong for the past 4,000 hours, keep the others as backups

Thanks klv, I will check out and see what they offer .

I have a CPAP that is in a similar condition as the OP.
Turns out the SoClean cleaning device was producing Ozone and Oxidation and causing the surfaces of rubber, urethane, plastic foam,and latex parts to slowly deteriorate into a fine white powder.

I had this same problem with white powder dust inside my Cpap machine from using a ultrasonic humidifier in my bedroom with filtered water.
You need to use distilled water in the ultrasonic humidifier to avoid this issue.
The ultrasonic humidifier with filtered water also caused my Gas stove burners to burn orange instead of having a nice blue flame.