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Dell Latitude D600 AC Adapter problem


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novice973 novice973 is offline
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26-Feb-2009, 09:02 PM #1
Dell Latitude D600 AC Adapter problem
I have a Dell Latitude D600. It can run on a 65W PA-12 (model HP-OQ065B83) or PA-10 (model PA-1900-02D, don't know wattage) family of Dell adapters. Both models have input of 100-240v 50-60hz, output of 19.5v. PA-12 outputs 3.34A. PA-10 outputs 4.62A.

I normally hook the laptop to the PA-12 adapter. About 2-3 weeks ago, I noticed that the icon which shows if I am on battery, AC, or AC and charging, kept flickering between AC and battery power. Finally, it stopped charging the battery in addition to not powering the laptop. I figured it was a problem with the AC adapter. Luckily, I have another PA-12 at home. So, I started using it. Everything worked for a while. Then, the 2nd PA-12 adapter started to act the same way as the first one. I have a docking station which is hooked up to a PA-10 adapter. So, I took the PA-10 and used that to run my laptop. Again this worked for a while and then the same problem. So far, 2 PA-12s and 1 PA-10 had stopped working. Then, I took the docking station (luckily it is small), connected the PA-10 to it, and docked the laptop. Everything worked. But soon after, I started getting a message that the laptop is docked, but the AC Adapter type is not recognized, and to undock the laptop or use another adapter for the docking station. I took the PA-10 and hooked it back to the laptop and removed the battery. If I play/move the adapter's plug on the laptop, sometimes the PA-10 will work. However, I get the message that the AC Adapter type is not recognized and the laptop will not run optimally. I have a choice to press F1 to continue or F2 to setup, etc. I press F1 and the laptop will boot. (This only works on the PA-10. It does not work on the 2 PA-12.) Unfortunately, the laptop will be working and suddenly decides it does not have power and turns off. All along, I thought I have a defective jack (since moving the adapter wire sometimes works). However, I have another PA-12 at work. So, I plugged my laptop to that adapter (my 3rd PA-12), and everything works. It charges the battery and runs the laptop without the battery.

My question, is something on the laptop causing the AC adapters to fail? So far, I have 3 adapters that are not working. I fear my 4th adapter will go the same way. Is this a bad jack issue (I bought replacements jacks just in case). Also, why did the laptop suddenly stop recognizing the adapters? Is there anyway I can fix the 3 adapters? (I've checked all 3 adapters with a voltmeter, they all put out the correct near 19.5 v).
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novice973 novice973 is offline
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Member with 200 posts.
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Join Date: May 2005
Experience: uses pc and likes to understand how things work
01-Mar-2009, 06:13 PM #2
Follow up:

I found someone with another D600 and tested the adapters. They work on his laptop. Does anyone know if this is just a jack problem or if the motherboard is the problem?
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