[AUUG-Talk]: Re: [BUGA] Replacing/repairing Apple Powerbook power supply?
andrewr at iagu.net
Mon Jan 16 16:38:09 EST 2006
At 12:48 PM +1030 16/1/06, Greg 'groggy' Lehey wrote:
> > mmm that sounds like a cracked solder joint. They can do this, work
>> fine when the unit is cold but as things warm up the joint goes open
>> circuit making the unit misbehave.
>One possibility. I think the goo points in a different direction.
Agreed. Do the bar-fridge test - stick the unit in a small fridge,
run cables through the door, and see what difference that makes to
the run-time. I had a wireless unit once in a remote area (no easy
replacement) with a dry joint that caused the unit to lose power
after it had been going for around 20 minutes, and sticking in a
bar-fridge with cables running through the closed door was sufficient
to make it keep going.
If it's a heat issue, the life should be significantly affected. If
it's an issue with the electrolyte suffering from ion migration while
current is applied, the life will probably be marginally extended.
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