Fixing broken Dell Laptop power supplies

Preamble

Following on from Dell M6700 or M6800, there are a lot of laptops sold without power supplies or chargers. This made me wonder:

  • Is it because they blow often?
  • Why is that?
  • Are they plugged into power hungry docks
  • Are they underrated?

See M6600 Owner’s Review – Warning – Large pics – Personal Opinions for an interesting break down of the power supplies and current draw.

Anyway, I thought that instead of buying an expensive new, or second hand, supply (the 240 W or 330W can go for up to £100+), is it possible to to fix them? Is there a common failure mode? A recurring point of failure?

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Sleepy iMac

Preamble

I was provided with a second hand G5 iMac 1.8 GHz (A1058) PowerMac 8.2 (not A1144). Unfortunately, it overheats and then shuts down, or rather, goes to sleep, shortly after being powered on.   This self imposed sleep happens quickly, especially if the processor is being pushed, such as by running a full screen video in VLC.

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