While there's a small chance the machine is messed up, it's more likely your needs have changed.
You may need a different CPAP pressure, or you have a different medical condition.
Also consider the possibility that your CPAP may be working perfectly, and you've got a different problem. We apneacs and our doctors tend to have tunnel vision on apnea/CPAP and miss things that have other causes.
If you get a new machine, be sure to get a "fully data capable" machine. Read the links in my signature to find info on how to get the right machine and how to avoid being screwed by the DME (CPAP seller).
Please fill in the equipment on your profile. There's a link in my sig line on how to do that.
However, do check your machine very carefully. Remove the water tank before moving it, so you don't spill water into the blower unit.
Do you change and clean the filters often? Be sure it's not clogged.
Turn it on, disconnect the mask from the air hose, and plug the output of the hose with your thumb. Listen and feel for any air leaks in the system. (blower, hose, humidifier, connections, etc.) Put the mask on and hook up. There should be somewhere on the mask where air is supposed to leak out. Be sure it is leaking the "normal" amount of air and the exhaust holes aren't plugged. Be sure it's not leaking elsewhere.
Turn it off, remove the water tank, and give it a good visual inspection. Look in the air inlet on the back, and the air outlet on the front. While you're at it, look for the model number. It's probably something like 1020923.
Eideard wrote:
I really don't want new overnight study. Been happy with results for 7 years. Saw sleep doctor about 6 months ago and he saw nothing out of line. Just want to use existing prescription on new machine.
If the software is halfway decent, I don't have problems. Longtime geek - online since 1983.
Did you take either the whole machine or the smartcard into the doctor during your 6 month ago visit? Did he examine the machine or the card before saying he saw nothing out of line? If your machine has a smart card, it's sort of like a poor man's mini sleep study every night.
If you get a good PRS1 (Respironics) or S9 (ResMed) machine, the programming is pretty easy, if you know the pressure setting you want. No software required, just multiple button pushes. Discuss it here before you decide which one to buy.