On Wednesday 13 October 2010, jeremy jozwik wrote: > On Wed, Oct 13, 2010 at 6:22 AM, Al Johnson > > <openm...@mazikeen.demon.co.uk> wrote: > > Judging by your photo and the component placement doc that would be R7507 > > which according to the schematic is 75R, and connects the SD_DATA0 pin on > > the connector to the chip. That certainly explains why your SD won't > > work! > > > > No - the 4 components are resistors not capacitors. The capacitor fix > > hasn't been needed since the full kernel fix that correctly implemented > > the Glamo's SD drive strength adjustment. > > > >> i have taken images and will upload them. but i wanted to put this out > >> first. > > R75707, well this is good and bad news. the good news, our developers > do indeed know what they are doing! > > the bad news, i need to try to solder something back on there. ok, so > its a resistor, any more information? > > make model micro soldering tutorials? i would really really like to > fix this if i can.
You can find the schematic and layout documents here: http://downloads.openmoko.org/developer/schematics/GTA02/ 75 Ohm and the correct size are the critical bits. Resistor tolerance shouldn't be an issue. I think the size is 0402 but you can check this by measuring (ruler, magnifying glass) before you buy, or hope someone who actually knows replies ;-) Here's one of many smt tutorials on the net. These won't be the easiest bits to start with though! If you've got a broken old motherboard or HDD to practice on it would be well worth doing. http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=36&page=1 _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community