Poll: Have you had charging or USB problems with your N900
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Have you had charging or USB problems with your N900

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Posts: 35 | Thanked: 5 times | Joined on Mar 2009
#2371
In slovakia, there is service, they repaired my broken usb for 19euros. I check their work and it looks like new one. I am going to tight it more using epoxide.
 
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Posts: 1,503 | Thanked: 2,688 times | Joined on Oct 2010 @ Denmark
#2372
or solder it down... ahh i give up, really know what you mean now abill
 

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Posts: 87 | Thanked: 535 times | Joined on Oct 2010 @ Karlsruhe, Germany
#2373
Another broken one here, the female part just fell out. The german repair service (w-support) was incompetent and Nokia inresponsive. Quite annoying.
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Marble - Find your way and explore the world with your N900 or N9 | Your voice counts!
 
Posts: 44 | Thanked: 6 times | Joined on Sep 2010
#2374
Originally Posted by rob_kouw View Post
Don't know if this is any help but: I thought my N900 is important to me as it carries so much information. So I bought a second hand N900 while the original one is stille functioning. I found it cheap at 140 euro, 20% of the original price of May 2010. It's sitting there waiting for the other one to be wrecked.
So panatha13 could retrieve his stuff on a second hand machine, and sync with his pc?
i have my stuff.
i tranfered it using ftp
 
Posts: 44 | Thanked: 6 times | Joined on Sep 2010
#2375
final answer from NOkia

"
‘’ I checked the repair and the documentation as well.

I can tell that there is a clear double out of warranty case. See attached pictures.

The Pads from the connector have been broken as well, therefore there is no warranty. Warranty cases are only detached USB Port, so the Pads are still available and not torn off.

As well I can see a liquid damage as well, so also this alone is a clear warranty void.΄΄

"

they now discovered that my Pads are broken. i cannot see any difference from rest cases that are given a new phone.
as for the photos, they were taken on 8 Sept, i gave my phone at 21 July and they hadn't mention any water.

look pics and tell me
look at the third one
there is a white scratch!!
i haven't throw any drop of water. it's like they put my phone on fridge
i have never opened my phone
Attached Images
    
 
Banned | Posts: 3,412 | Thanked: 1,043 times | Joined on Feb 2010
#2376
Originally Posted by panatha13 View Post
final answer from NOkia

"
‘’ I checked the repair and the documentation as well.

I can tell that there is a clear double out of warranty case. See attached pictures.

The Pads from the connector have been broken as well, therefore there is no warranty. Warranty cases are only detached USB Port, so the Pads are still available and not torn off.

As well I can see a liquid damage as well, so also this alone is a clear warranty void.΄΄

"

they now discovered that my Pads are broken. i cannot see any difference from rest cases that are given a new phone.
as for the photos, they were taken on 8 Sept, i gave my phone at 21 July and they hadn't mention any water.

look pics and tell me
look at the third one
there is a white scratch!!
i haven't throw any drop of water. it's like they put my phone on fridge
i have never opened my phone
The pics show clear that there has been water inside your device but what strkes me most is the pads are all still in place and have not been ripped off the board so WHY have they not soldered a new usb port back on those pads????.

Something is not right here and how did you manage to get those pics?

There is one pad on the rear that looks ripped off and that is the 1st one the +5v pad but still very easy to link back.

Last edited by abill_uk; 2011-09-14 at 13:56.
 
Banned | Posts: 3,412 | Thanked: 1,043 times | Joined on Feb 2010
#2377
Who was the person that advised gluing this port back in place ? it is the most craziest idea i have ever read on this forum.

I give up log time ago with this idea from pure experiance of seeing the results of glue that has gone brittle..... happens EVERY time.
 
Banned | Posts: 3,412 | Thanked: 1,043 times | Joined on Feb 2010
#2378
Look at the pic showing the pads and you will see a lot of geen pcb paint covering the earth plain of the board.

The 5 pads at the rear are the important ones, none of the rest matter as you must scrape away the green paint either side of the port to solder the jacket down, THIS is what makes the port strong and far far better than any glue could ever do.

As long as that device has not been sabotarged by water then it is a far easier fix than some i have done when all 5 of those rear pads have ripped off the board making it no choice but to link wire them back direct to the pins on the port from components the tracks actually go too.
 
Posts: 44 | Thanked: 6 times | Joined on Sep 2010
#2379
the pics where sent to my by nokia service. i cannot believe that this phone is mine. as far as i can remember the pad missing was not on the mini usb.
i cannot believe the water shown. the scratches.!!
maybe it was due to humidity because i was close to the sea for last 1 month. But it seems that there are drops of water !!!. i'm to annoyed. I think i will pay the 60E and sell the phone the same time. im so dissapointed and angry wiith nokia.
Attached Images
 
 

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Posts: 2 | Thanked: 5 times | Joined on Sep 2011 @ Sweden
#2380
Nokia N900 repaired!

Hi all! My daughter had this problem with her Nokia N900. The USB connector got loose and she couldn't charge it. As usual I disassembled the phone (it was surprisingly easy, at thought such a phone should be complicated to disassemble!) and soon I could see the problem. The USB connector have loosened from its pads. I tried to solder it down again but I realized that the copper foil have loosened from the laminate at the small pads under the connector so it didn't help. They were also impossible to investigate without desolder the entire connector. Trying to do so I found it extremely difficult to solder. All heat just flooded away into the copper planes. At that point I started Googling and found this forum. Very interesting but no solutions!

What is the problem? Regardless what some have said the reason to that the connector is getting loose is a bad design of the pads. The designer have put tens of laser vias into each pad and that leads away all the heat down to the planes. Especially one side of the connector have bad soldering. The very close shield box is another reason. So this design made it impossible to get a through soldering of the connector during the manufacturing.

Repair? I desoldered the remaining parts, it was so difficult that I ended up cutting it to pieces. Now I could see that the small pads inside the connector was directly connected to inner layers through laser vias. Impossible to solder again. There was a little crater in each of the pads down to inner layers. Therefore the only solution would be to put cables from the connector to somewhere on the board IF I could find such a place. I managed to dig down into the laser vias using a sharp tweezer and could start searching with the multimeter.

YES, there are test pads for the entire USB connector elsewhere on the board. So, I bought a new connector, soldered very small cables to it and connected them to test pads. (Using a high end professional soldering station). I covered some of the broken pads with isolation paint because underlaying conductors have been freed. Just to make sure nothing got short cut. I used another, very high power soldering iron to solder the new connector. This time, with more power, it worked. One pin in the corner of the shield box was impossible to solder so I soldered it directly to the shield box instead!.

Tested it and it worked perfectly!

I have uploaded two images. One of the free pads and one of the repair. You can see the pads on the mother board that i used. For GND I used the original pads after putting a small wire from the pin to the connector case.
Attached Images
  

Last edited by Bengt; 2011-09-15 at 17:24.
 

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Tags
bad design, broken, charging, failure, hardware, loose, microusb, microusb port, n900, nokia, part, port, repair, return, surface mount, usb, usb port, warranty


 
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