[Noisebridge-discuss] can anyone help me repair a Asus EEE netbook this weekend?

[jim]

   you can use way under rated resistors but for 
very short times. for simple tests use a higher 
resistance value to limit current. 
   where you really need the correct impedance, 
stick the under rated resistor in place and you 
almost always have a number of seconds of use: 
the finger test tells you when to stop (and put 
another similar resistor in the hot one's place. 
   use several identical resistors in parallel: 
add the power ratings but divide the resistance 
value by the number of resistors. if you have 
four 3W 80 Ohm resistors in parallel, you've 
got the equivalent of one 12W 20 Ohm resistor. 
   Almost never do you need a resistance value 
that's an exact match; almost always you can 
work with something that's from 20% to factor 
of 2 off--try to err on the high side: you 
have a system impedance of 30 Ohms, go as high 
as 60 but not much lower than 24. 



On Fri, 2010-11-05 at 20:57 -0700, travis
+ml-noisebridge at subspacefield.org wrote:
> Hey all, as mentioned earlier in this thread, I have a nearly-new Asus
> EEE 1215n netbook which fails to charge or boot up without battery.
> 
> I tested the PSU (transformer brick) and it's generating 19.1V or so
> (at home - 18.5V on the bench at Noisebridge).  I couldn't find a
> power resistor with a high enough power rating to test it - I saw some
> 3W 67 kOhm resistors but wasn't sure if I wanted to try them since
> this PSU can put out 20W.
> 
> Anyway, I *think* this is a mechanical breakage at the power jack on
> the mobo.  I've got it disassembled but never inspected solder joints
> or "sweated" them with a hot air machine as suggested, so could use
> help from anyone who has done this before.  I'll be available all
> weekend, just let me know, thanks.
> 
> Reply-To set to me.
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