1. Post #1
    boxburn's Avatar
    August 2010
    38 Posts
    Well, i was looking at the bottom of my Xbox's mainboard pointing at something with my thumb, the board slipped and my thumb nail caught 2 parts from the board, can anyone help me with what to replace them with? Here is the picture: http://i573.photobucket.com/albums/s...19171757-1.jpg

    It is located somewhere below on the opposite side of the HANA chip. The console starts up then once the ring has done its little spinning intro I get the two red lights that usually indicate overheating.

    As the picture shows the first one has "C4P6" next to it and the second one has "C4P9" next to it. Also, the console is a Falcon.

  2. Post #2
    Asshole Extraordinaire
    Dennab
    May 2005
    3,705 Posts
    Those are SMD ceramic capacitors. Their capacitence in pF is based on their size, so if you can find some ceramic caps that fit those pads, they will work.

    They're plentiful on motherboards, so if you have some dead motherboards, you can scrounge caps off of it to use on your xbox. The only issue is that they're VERY hard to solder with a soldering iron. You'll probably have to use tape to hold it in place while you solder it on.
    Reply With Quote Edit / Delete Reply Linux United States Show Events Informative Informative x 1 (list)

  3. Post #3
    boxburn's Avatar
    August 2010
    38 Posts
    So basically, they only vary in size, if i get some the exact same size they will be correct for it?

  4. Post #4
    Asshole Extraordinaire
    Dennab
    May 2005
    3,705 Posts
    Pretty much. You can use bigger ceramic caps if you can't find the correct size (like C4P13) if you can get it soldered on properly.

    I would try soldering C4P6 on first to see if the machine will work. C4P9 is in parallel with C4P1 and C4P11 and the machine should work without C4P9 for brief testing (I wouldn't leave it off though.)
    Reply With Quote Edit / Delete Reply Windows Vista United States Show Events Informative Informative x 1 (list)

  5. Post #5
    boxburn's Avatar
    August 2010
    38 Posts
    Well I spoke to my older borther who does electronics and he sid he can't replace it without knowing what it's part code is, if there any chance you could send me a link to the parts I need? Sorry for being so reliant on you but I'm hopeless.

  6. Post #6
    Asshole Extraordinaire
    Dennab
    May 2005
    3,705 Posts
    Without having the schematic for the motherboard or an expensive capacitance meter, it's impossible to tell what the value of the capacitor was. This means no part number, you're going to have to guess.

    We're going to have to guess what the value of the capacitor is based on its surroundings.

    First we need to know what the working voltage is. Since the Xbox motherboard works on 12v DC or less, you can use a ceramic capacitor with a voltage limit of 12v or more.

    Next we need to know the size of the capacitor is. You'll have to get a metric ruler and measure the dimensions (length from end to end, width and height from top to bottom. Since the original parts are missing, you can measure a same sized cap (C4P1) for both caps.

    As for capacitance, we'll have to go for the highest capacitance for the ceramic capacitor of that size (probably 0.1 pF)

    www.mouser.com has a huge selection of ceramic capacitors, the only downside is you have to pay for a minimum of 1 lb shipping (usually around $7) so you may want to buy other stuff to make it worth getting the ceramic caps.
    Reply With Quote Edit / Delete Reply Linux United States Show Events Useful Useful x 1 (list)

  7. Post #7
    boxburn's Avatar
    August 2010
    38 Posts
    Well with just a normal MM ruler and a bit of guess work it looks like it is about 0.9mm in length, 0.4mm wide and 0.4mm in height. Thanks for this help aswell.

    Here are two images of the parts next to my ruler, help:
    http://i573.photobucket.com/albums/s...2-21221624.jpg
    http://i573.photobucket.com/albums/s...2-21221444.jpg

  8. Post #8
    boxburn's Avatar
    August 2010
    38 Posts
    I have managed to get hold of another falcon board I handed into college for display purposes (un-fixable rrod) so i now have the parts from that display board, thank you so much for your help bohb.