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[Equipment] Power adapter issues
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SleepyQwerty Offline

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Posts: 2
Joined: Dec 2014

Machine: SystemOne
Mask Type: Full face mask
Mask Make & Model: Fischer Paykell
Humidifier: SystemOne
CPAP Pressure: 11.5
CPAP Software: SleepyHead

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Sex: Male
Location:

Post: #1
Question Power adapter issues
So I forgot my power cord & adapter coming back to my parents' house for the holidays from college. A couple nights ago I went through our Bin of Old Electronics and found an adapter that fit my machine. It was rated for 12volts, like my machine says it takes, and 4 amps, whereas my machine says it needs 5 amps. Nonetheless I decided to give it a try and it basically worked (turned off for a second a couple times, but turned back on right away). In the morning the adapter was a little warm but not dangerously hot, and the machine still running. Now, however, with the same adapter/cord/etc it won't work at all (I can't even get the display to light up.) Anyone, maybe someone who knows a little bit about electricity, know what's going on?
12-30-2014 07:42 PM
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surferdude2 Offline

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Posts: 1,077
Joined: Jul 2014

Machine: ResMed S9 AutoSet
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro & Optilife
Humidifier: ResMed H5i @ #3 if nose breathing & #5 if mouth breathing
CPAP Pressure: 12 ~ 20 & 11 ~12 if nasal mask
CPAP Software: ResScan SleepyHead

Other Comments: Late stage 2 emphysema

Sex: Male
Location: Mousetown, Southern Illinois

Post: #2
RE: Power adapter issues
I think you have hosed the underrated power supply. Since it overheated, it was obviously being stressed beyond its normal limit and even though it continued to work until you turned it off, that doesn't mean it will recover. It likely continued to cook long after you turned it off.

I can't dismiss the possibility of some failure of the CPAP unit but without measuring the output of the PS it will remain a remote possibility.
12-30-2014 07:57 PM
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DeepBreathing Offline
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Posts: 2,296
Joined: Sep 2013

Machine: Resmed S9 VPAP Adapt
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: Resmed H5i
CPAP Pressure: EPAP: 9 - 15 PS: 3 - 10
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: Perth, Western Australia

Post: #3
RE: Power adapter issues
G'day SleepQwerty, welcome to Apnea Board

From what you tell us, it sounds like you've cooked the power supply by using it beyond its rated capacity. The fact that it shut down twice during the night should be a warning. Is there a fuse in either the power supply or CPAP you can check? Also, did you use the humidifier? From what I can see in the Philips site, the humidifier needs 2.0 to 2.1 amps on its own, so if you just use the blower without the humidifier that power supply might be adequate (provided you haven't already cooked it).

One other issue comes to mind - I have read on this forum that some CPAP machines are sensitive to the quality of the electricity they receive. Cheap adapters may produce a spiky waveform which is not conducive to the health of the sensitive electronic components in the machine. (And I'm pretty sure that wouldn't be covered by warranty either). Best advice is to get hold of a "proper" power supply ASAP.

DeepBreathing
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www.ApneaBoard.com


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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
12-30-2014 08:04 PM
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trish6hundred Online

Advisory Members

Posts: 6,452
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Full face mask
Mask Make & Model: Fisher & Paykel Simplus
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #4
RE: Power adapter issues
Hi SleepyQwerty,
WELCOME! to the forum.!
It sounds like the power supply you used was under rated for the task.
Hopefuly, you didn't ruin your machine.
Hang in there for more responses to your post and much success to youwith getting your machine working.

trish6hundred
12-30-2014 08:32 PM
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Mike1953 Offline

Preferred Members-2

Posts: 134
Joined: Aug 2014

Machine: Resmed S9 Escape Auto
Mask Type: Nasal pillows
Mask Make & Model: Resmed P10
Humidifier: Resmed Hi5
CPAP Pressure: 12
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: Kansas USA

Post: #5
RE: Power adapter issues
As others have said sounds like your power supply has been fried. The on and off a couple times should have told you it would not work.

For free Medicare assistance for your state check out this page. http://www.seniorsresourceguide.com/directories/National/SHIP/
or here http://www.medicareinteractive.org/
12-30-2014 09:02 PM
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justMongo Offline

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Posts: 3,855
Joined: Sep 2013

Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
Mask Make & Model: ResMed Mirage Quattro
Humidifier: ResMed H5i
CPAP Pressure: 18 IPAPmax - 11 EPAPmin, PS=5
CPAP Software: Other Software

Other Comments: μολὼν λαβέ

Sex: Male
Location: Калифорния

Post: #6
RE: Power adapter issues
Normally you derate a supply. If you need 5 Amps; you use a PSU with greater capacity.
Surferdude2 is right -- 90% chance you fried the supply.
.... .. .... ..

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
12-30-2014 10:03 PM
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