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General discussion

Laptop crackling, smoke, burnt smell....need diagnosis

Jun 19, 2009 5:43PM PDT

My WinXP notebook smoked and make a crackling noise one day while working on it in my lap. I quickly saved my work, unplugged it, and closed the top. I set it aside to give it time to cool, then powered down and opened it up. I had a similar problem on my old ibook before, turned out to be the power supply. I'm not so sure this time. The power supply's green light comes on when plugged into the wall and begins flashing when plugged into the computer. I can't really determine if it's powering up or not (battery has sucked for a while) but plug gets hot if left in. How can I determine if it's this power supply or a short in the motherboard?

Discussion is locked

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"battery has sucked for a while)"
Jun 19, 2009 10:18PM PDT

That's a GREAT CLUE! Over the years I have run into too many laptops with a failed battery where the owner leaves it in which taxes the laptop's internal battery charger and you see failures like you ask about.

It appears no maker writes about this issue so here a summation. -> When your battery is delivering just minutes of service or none, remove it from your laptop and give it to the battery recyclers. This will save your machine from certain death.

Sorry but it looks like this advice is too late for your machine. My bet is its repair will be a new motherboard and battery. The cost for this runs about 300 for the board and 150 for the battery so compare that with a new laptop.
Bob

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You're probably right...
Jun 20, 2009 4:52AM PDT

....I just wonder if it might have had something to do with running my laptop while connected to the charger in my car. It seems this failure happened shortly after. It was the only time I ever used a notebook car charger. Could that have damaged the internal workings or would the smoke, crackling, obvious signs have happened then? Thoughts?

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Only if
Jun 20, 2009 5:52AM PDT

Said car charger was way way way out of spec. Such as setting it on 24 Volts when it was supposed to be 19. But I'm going with no here. The comment about the battery is the gimme.
Bob

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Thanks Bob, BTW...
Jun 20, 2009 12:17PM PDT

....would you happen to have a link or know where I can read more about this problem in detail. I'm curious to know more of this phenomenon.

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Failure analysis was
Jun 20, 2009 9:30PM PDT

Many years ago my work involved failure analysis of electronics. For your research the words would be on a search engine "Electronic failure analysis."

While interesting I don't see how learning electronics is going to fix this machine for most owners.
Bob