You may want to try http://www.txcesssurplus.com.  I have purchased several Dell surplus components for older machines there, and have had pretty good luck (fast shipping).  It appears they may have what you're look in for in-stock:

http://www.txcesssurplus.com/servlet/the-6072/Dell-OptiPlex-SX280-Phrizbee/Detail

The listing doesn't say how many they have, but perhaps you can scrounge up the 3 you seek.

Cheers and good luck. 
John B. Johnston
505 Biochemistry Building
East Lansing, MI 48824

Phone:  (517) 432-7177
Email:  [log in to unmask]

"First they ignore you, then they ridicule you, then they fight you, then you win." (Ghandi)


Aldrich, Dak wrote:
[log in to unmask]" type="cite">

Help!

 

After 6 weeks, Dell STILL hasn’t gotten me information on when, or if, I can expect 3 SX280 motherboards.  I’ve called them 4 times, 3 of them leaving messages that were not returned.

 

I have 3 of them with bulging capacitors, and are not working at all.  They are perfectly good machines and I would rather get new motherboards for $170 each, as opposed to purchasing new computers.

 

Does anyone out there, by any chance, have any extra motherboards for the SX280 stockpiled that I might be able to purchase from them?

 

Thanks for any assistance anyone might be able to give, since Dell is insistent on ignoring me.  (Yes, I’m getting bitter!)

 

-dak Aldrich

-network admin

-college of music, msu

[log in to unmask]

-http://comit.music.msu.edu

-517.432.5045