Can you help me identify this surface mount xbox component?

The nomenclature (C7D2) suggests a capacitor. Without a schematic its impossible to determine its value. (unless the marking on the component are intact). You could use the trial and error method or use a capacitance decade box. Start with larger values and work your way down (say from 10 microfarads down).
Most likely there are identical components elsewhere on the circuit board. You could make an educated guess as to the type and size of the unknown component. If possible, it would be useful to examine an identical device to get the information you need.
Probably the easiest solution is to contact the manufacturer and order a schematic drawing and parts list.

Other resources you can try: other recourses you can try:
http://www.plug-ins.net/304714956/529062185/index_html?pageID=704921804
http://pub94.ezboard.com/fgameconsolerepairforumfrm4
http://www.llamma.com/xbox/Repairs/repairs.htm

I had guessed that it was a capacitor by it's name as well. The surface mount resistors are r"x"d"y" so it would be following convention.

the surface mount caps that I can see on th board appear to be unmarked, but I'm also hopeful that the ones that look similar actually are.

I don't believe that Microsoft has repair documentation available for the xbox, as all repairs are done strictly in house.

Thanks for the comments so far though!

Are you sure that this component was not removed intentionally by the manufacturer (Sorry I can't see the picture clearly enough to discern)? I happen to have a bit of knowlege of SMT process and manufacturing, and I know that occassionally it is neccessary for shops to have to remove parts that should never have been there in the first place (due to a bad board profile, in-process design changes, etc.).

I hope you are very good with a soldering iron...

Good Luck,

JP

Yes, I can tell without question that this missing component is the result of damage. The picture that I have linked is one of a good reference board. The board I'm working on has this component obviously scraped off (though the surrounding traces are undamaged)

>>...a good reference board.

If you have an identical device, then whats the problem?
Just test the known good component and get a replacement.
Is working with SMT causing you difficulties?

It may be just a decoupling cap and the box may work without it. Just turn it on and see what happens.
In the worst case, measure the cap value on the good board, and install the same value on the damaged one.

well for 1, have no testing gear that would allow me to judge the capistance of the component.
I've tried to run things without this component and no deal. though i haven't tried bridging it out... perhaps I should.

What I'd really like is to know that the schematic spec of this component is. This would be preferable to the measured value.

In a worse case scenario, I could purchase another xbox MB on ebay and steal this cap off of it. But that's about $30 for one little surface mount cap.

Just try to power up the board without the damned cap. It may not be essential. Looks like one end is grounded, so it is probably 0.1M or so decoupling cap.

Well, AK. I think that your answer will be the best one I'll get. Not to imply it isn't good. I just would have taken "That is a .1microfarad cap. I have my own xbox and I checked" or something more definite. I think that I'll employ your method and will be back in business soon.

Sorry that I made it unclear, the unit produces no video signal and does not boot propperly in its current condition.

Repairing an electronic circuit without a schematic is not easy to say the least. But if the trouble is limited to this one component, Im sure youll get it working. Keep me apprised.
Thanks, and good luck!

Oh and it looks like public is correct. The right side seems to be common so its a safe bet thats the negitive.

Just FYI,
This component when removed and tested from another board read as a 7.15nf cap.
I'm guessing it's a 10nf by spec.

Just FYI,
This component when removed and tested from another board read as a 7.15nf cap.
I'm guessing it's a 10nf by spec.

Did you rent a Capacitance meter? Do you know what is the Accuracy of the meter is?
Capacitors usually have tolerance rating of no more than plus or minus 20%
Have you tested the box with a discrete capacitor in the range of your measured value?

The best practice is to replace the component with a high tolerance device (plus or minus 5% max.) in the range of the actual measured value of the known good device.

If you look through a selection guide and match up the physical characteristics as well as your measured value, plus voltage, and frequency range, there is a good chance you will find a suitable replacement. Something along these lines

http://www.cornell-dubilier.com/surfacemount/fcaoutline.htm
http://www.cornell-dubilier.com/surfaceframe.htm

Are you able to examine the damaged one to determine what type of cap that might be? (i.e. Mica chip, film, or Electrolytic? (is there any distinction between the leads that might indicate a positive or negative end?)  

Are there any identifiable markings on the component? There is a remote possibility that it is an inductive device or coil, though I think this is unlikely.

It looks like a common 'chip' cap.