No, there's no damage visible from the outside.
I don't relish the idea of disassembling it (or rather of trying to re-assemble it afterward) but I suppose it is getting to be time for last resorts.
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Question
plugging in laptop kills power supply
I have a Dell Latitude D610 laptop which is out of warranty. If I plug in the AC power supply, the green LED on the power supply immediately goes out and the laptop won't power on. If I then unplug the power supply from the laptop and from the outlet for a minute, it recovers, but subsequently plugging it into the laptop does the same thing.
The power supply works with other Latitudes and I've reproduced the problem with another power supply on this laptop.
The same thing happens regardless of whether the battery is removed. I've also left it unplugged overnight with no improvement.
I'm surmising that there is some electrical problem on the motherboard which is causing the power supply to shut down to avoid damage. Short of replacing the motherboard, are there any other useful troubleshooting steps to take at this point?
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Answers
For most power-related problems, capacitors going bad is the cause, and sometimes the damage is visible and sometimes it isn't: www.badcaps.net
could be a dry solder joint on or near the PSU connection. you have ruled out a duff PSU with your tests, so that only leaves the AC socket and the motherboard.
could be fixable if you know what your doing (i hate taking laptops apart), or a good local repair centre might be able to assist - either solder repair, perhaps cap repair/replace or a new/refurb board.
Ok. I'm well familiar with the hazards of bad capacitors, but getting at these is going to be more trouble than it's worth. Any fixes which require replacing the motherboard or using a soldering iron are impractical here.
I'm going to implement the backup plan, which consists of going through its metaphorical pockets and looking for loose change.
Thanks for the responses.
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by: Spec01Posted on 2009-09-01 at 07:19:29ID: 25231819
On your laptop is there any type of damage on the power outlet? It could be possibly that there may be something shorting out the AC power when it is connecting. If it is not visable from outside of the laptop might have to crack it open and take a look inside.