Question about Dell Inspiron 1420 (dncwja1_1) Intel Core 2 Duo T7250 (2MB cache/2.0GHz/800Mhz FSB) 80GB/1000MB PC Notebook
One possibility is that the power cord attaching the power adapter to the DC jack in the laptop might be broken or damaged. Inspect it visually to verify this possibility.
Also, try measuring the DC output from the power adapter's outlet to make sure it is providing the correct output voltage needed to run the laptop (if at all).
Another possibility is that the DC jack where the power adapter connects to the laptop might be either loose or damaged, & needs to be either re-soldered or replaced. However, in order to do this, you will need to disassemble the laptop & get the motherboard out.
If this did not work, there might be a possibility that the charging circuitry on the laptop's motherboard is defective & needs servicing. In order to do this, the laptop needs to be disassembled & the motherboard checked for defective/burned out components in the area near the DC jack. Any defective/burned out components found should be replaced, or you might need to replace the laptop's motherboard altogether.
Posted on Sep 06, 2010
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Posted on Jan 02, 2017
SOURCE: AC adapter not recognized
The AC adapter has a small wire in the center of the connector to the system. This sensing wire, if bent or broken will cause the error you mention.
Check the inside of the connector, since it is new, you can call Dell 800-624-9896 for a replacement adapter.
Posted on Sep 14, 2008
SOURCE: AC adapter not recognized
If you don't get any errors when you startup on battery then all you have to do is call Dell. Get work order number and send them the laptop and adapter. They are very fast. I sent a laptop to them last month and I had it back in 3 days! I was surprised.
Posted on Dec 04, 2008
myabe the battery is faulty have you tried replacing it?
Posted on Sep 07, 2009
Testimonial: "Don't have an extra battery to test so was hoping the error was causing the battery not to charge. "
SOURCE: have a dell inspiron with
From doing a google search for "AC Adapter Cannot Be Determined" it
appears your power adapter is defective and/or the output voltage is not
up to full voltage. From the many posts about this that I find doing
the google search it's a fairly common problem. If it's still under
warranty contact Dell Support. If not, you'd better buy one replacement. There are tons of online stores selling this.
Posted on Nov 17, 2010
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