Highlighted

Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

For the last two weeks, every time I start my Dell INSPIRON E1705 while using the power supply I am greeted with the following message. "The AC power adapter type cannot be determined. Your system will operate slower and the battery will not charge. Please connect a Dell 90W AC adapter or higher for best system operation". I press the F1 Key and everything works fine. I've read about this on other websites and most say it's a design flaw in the power supply after the cord has been properly wound around the supply as designed. Apparently a few of the cords internal wire strands become broken and cause this message. My computer is from June 2006 and shouldn't be having this issue so early...or ever. This seems like a flaw that should have created some type of manufacturers recall since so many people are having this issue. I'm of course out of warranty, will Dell replace this free of charge?

 

`

0 Kudos
66 Replies
hrova
Diamond

Re: Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

There is no recall (which is generally for safety issues) or free replacement that I am aware of.

Perhaps the failure rate is not as high as some would have you believe. 

Keep in mind the sheer volume of the parts out there. Yeah, those that have failed adapters will actively post about it, but how many never have these issues?

We have SIX Dell laptops in our household (various models, from an Inspiron 1100 all the way up to a Precision M6300) and have not had one power adapter issue.  Admittedly, we use Dell's where I work (laptops for the past 6 years) and I have had one adapter fail, resulting in the message you describe. That is not at all an unacceptable failure rate.

 

Community Member Since 2003

KirkD
Diamond

Re: Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

You are correct, the failure is due toloss of the power supply ID signal. Sometimes this happens because of strain on the plug, which breaks the signal wire. Some even are so severe that the insulation breaks away from the plug; this is due to rough handling. The other cause is one or more of the power socket solder connections to the system board become broken. This also is related to severe handling. I have seen one case where all three power connections and three of four mechanical connections were disconnected. If the power supply is bad, a replacement will cure the problem. If not, then the socket is bad, and this will require a system board replacement. If you are experienced, you can try to resolder the connections. I am experienced and was not able to get my daughter's E6000 to work by resoldered. More recent Dells are using a replacable power connection board which is a much cheaper repair.

XPS M1530, Win 10 CU Pro 32-bit
Inspiron E1705, Win 10 CU Pro 32-bit
Dimension 9100, Win 10 AU Pro 32 bit
Inspiron 660, Win 10 CU 64 bit
Inspiron 3668, Win 10 CU 64 bit
Asus T100 Tablet, Windows 10 CU 32 bit

Re: Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

I had a similar problem with a Vostro a few months ago - fortunately it was still under warranty so Dell repaired it. The cause turned out to be a blown capacitor on the motherboard - the engineer showed it to me.

Do you have access to another Dell adapter? This is the easiest way to determine whether the adapter or the laptop itself is at fault.

0 Kudos
samshal
Copper

Re: Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

I have that same model and recently got the same message. If I turn on the computer with the power adapter connected that screen shows up, if I turn it on w/o it, windows come up, but it won't charge when I do plug it. I was wondering if you ever did solve your problem, as I have tried to contact several places to see what they say, and they've told me that it's usually a problem with the motherboard, and nothing at all to do with the power cord.

0 Kudos
ramki1
Copper

Re: Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

I had the same problem, My other Dell charger would work fine but the original one that came with this laptop would always throw an error message indicating that the adapter wasn't recognized. None of the suggestions on any of the forums worked.

So I held the chord by the circular flex thing at the end, and pushed in the power pin with force into the laptop, held it on for a few seconds - And now the laptop recognizes the adapter, charges and works fine! If you push the power pin slow and gently into the laptop, it doesnt recognize the adapter. I think the problem is either with the wires near the pin of the power chord, or with the adapter inside the laptop.

Try it, worked for me! 

 

KirkD
Diamond

Re: Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

Good sluthing!!!

The problem is most always contact of the small signal pin with the small hole in the center of the socket pin.

My daughter just busted the DC socket on her 1735. The plastic pin totally broke off, leaving only the internal connectors. The power supply still works, but will not charge the battery. Looking closlely, there are multiple power connection wires, but the connection for the signal wire seems to be a pair of (thin) closlely spaced connectors. If the signal wire does not hit exactly between the two connectors, there is NO connection. I don't like the physical layout of these connectors, as it wouldn't take too much to affect the positioning of the pin and the socket connectors.

I think Dell should addopt the Apple magnetic power coupling method and forget about battery identification.

 

XPS M1530, Win 10 CU Pro 32-bit
Inspiron E1705, Win 10 CU Pro 32-bit
Dimension 9100, Win 10 AU Pro 32 bit
Inspiron 660, Win 10 CU 64 bit
Inspiron 3668, Win 10 CU 64 bit
Asus T100 Tablet, Windows 10 CU 32 bit

0 Kudos
Rickyyy
Copper

Re: Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

My laptop has this problem and will charge when it is on when i use force to plug the charger but when i turn it off it will not charge do u know how i can fix this?

0 Kudos
ejn63
Diamond

Re: Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

It may be possible to have the jack replaced - total cost should run in the $150-200 range.

Otherwise, replace the mainboard ($400+).

 

0 Kudos
countdunky
Copper

Re: Power Supply - "The AC power adapter type cannot be determined....."

Jump to solution

I have the exact same problem.  And judging from the posts I have seen on this site and others Dell needs to learn the lesson of the American auto makers.