hi all,
so many people fixing their N900 USB I tried that, too. Some pads where gone but those 2 for USB power have been there. Unfortunately the USB-Socket filled up with some solder, and as I tried to plug in the cable, the whole thing jumped of again - and now there aren't any more pads left!

Does anyone know where exactly the conducting paths of the USB port go? (They aren't vissible, must be a layer in betwee) That's the only chance for getting USB back.

I got the service manual with the schematics but there's no layout.


greets,
Simon

from original post http://talk.maemo.org/showpost.php?p...3&postcount=12

I think most of the people get their sliders scratched a bit. If you feel the slide is too tight, unscrew a bit the 4 screws that hold the upper side (with a PH0 screwdriver) until you feel the slide is how you want it.

Big thanks for this pic, My N900 fell and snapped out the USB port and this was the image I needed to get everything soldered back down. Talk about sweating out some micro repairs, I had a LED flashlight, solder, soldering iron, and an eye loupe all a few mm from the board. I used the idea up the thread to scrape the green covering from the ground plane of the PCB making a larger area holding down the USB port. I ended up having to lift off the RF sheilding and even snipped away the wall that was preventing me from getting a good angle at the tiny port leads. Then I used alcohol and a swab to clean up the flux mess when I re-tinned the contacts, I suspect Nokia uses 0% lead solder for enviro reasons but I used 40/60 solder which I think is a bit stronger and flows better.
I still worry as I use a dynamo charger and rigid mini-microUSB dumb to smart charge tip on my bicycle to charge the N900 as I commute, I might get a USB cable and try to carve it down to nothing attach a four lead ribbon cable or the existing wires and let all the stress and damage hit the sacrificial bit of cable, if this remounted USB port ever goes again it will be catastrophic.

Ha ive not been around for a while but still have my N900 all tricked out and working fine unit a week last friday I was at the office and my N900 was playing just fine via the FM transmitter to the workshops Radio system, nice!!! and on charge via the workshop pc, nicer!!! when from the corner of my eye I saw something, looked to the left to see my N900 smoking "AARRRRRAAAAHHHH" WTF!!! I grabbed the thing in a fit of rage and tried to pull the micro usb connections apart, but they wouldnt free them selves...S*** !!! I shoutted as I paniced and looked at the other end of the usb still attached with a snug fit to the workshop PC...supplying my n900 with 5+ volts of welding connection power.. I yank at the wire a surprised look on my face as the connector came away from its home and the N900 was pulled out of range of the workshop radio... a loud hiss desended upon the workshop and everyone not noticing the comotion earlier turn and looked toward the speakers behind me... I said dammmmnn thing my nokia was smoking from the usb... One of my collugues shouted coming though...as he made his way toward me HTC in hand... pluged in to the workshop pc and accessed his memory card...and good tunes flowed between his darn HTC and the workshop pc. I looked at the lymp N900 in my right hand and looked to the sealing and shouted NNNNNOOOOOOOOoooooooooooooo!. but it was to late the damage was done.

So Ive ordered 3 micros from the bay!! and Im going to do the wiring myself. I will post my results... although in the mean time Im using a battery charger and spare battery to keep me going.. not a bad Idea. and if I need anything from the phone I bluetooth it... so not too bad just madness at the mo.

Loz.

if you had soldered it down you would not have ripped it out, cant say anything about the smoke thou...

Tried Micro surgury... couldnt do it.. no freekin chance. Its gonna have to go away... but what of my pics!!!! I have some very naughty pics hidden in a (.media) folder cant see them whenbrowsing my photos.. can only when you usb it and add as mass storage...Dammmm it!! So how do I get them off without flashing the thing which I dont want to do anyway?????

HEEEEEEEEELLLLLLLLP!!!!

Loz...

You miss read my mail... I didnt trip or anything on the cable.. its ware and tare thats caused the micro usb to short out and then weld the male side into the female..so of cause the micro usb is totalled.
But never mind this now I need help with the post above!!
Loz.

use xterm
cd /
find -name *.jpg | more
rm filenameToRemove

I could not parse this whole "!!111!!" and "?///?" message, so I also don't have a clue about smoke, but You're not right in USB port topic. *If* You had soldered it out *before* problem appeared, You would not have it ripped down, no matter of situation.

/Estel