[Gllug] component level repair (was Open Source Hardware User Group meeting)

Frank Scott lists at frasco.org.uk
Tue May 11 20:44:31 UTC 2010

On Tue, May 11, 2010 at 06:59:55PM +0100, general_email at technicalbloke.com wrote:
> tid wrote:
> Yes I have heard several similar stories but I wouldn't dare try it on
> any of my customers hardware! Apparently several people have met with
> success baking the motherboards of their (notoriously flaky) HP DVx000
> series laptops in a normal domestic oven though, the original problem
> being the graphics chips solder connections fatiguing and breaking
> because of excess heat followed by repeated cooling.
> Apparently the trick is adding a healthy dose of flux and getting the
> temperature just right, IIRC 205 degrees C so make sure you get an oven
> thermometer as most ovens thermostats aren't very accurate and the
> difference between the top and bottom shelves can be as much as 20
> degrees even with a fan. I suppose a grill might work even better.

At fosdem the RepRap guru (Adrian Bowyer) recommended using a non-stick
frying pan calibrated with a cheap handheld infrared thermometer to do
SMT work.

    .^.     .''`. 
    /V\    : ;`  :   Frank Scott  Sutton, London
  /(   )\  `. ''`    <frank at frank-scott.me.uk>
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