Notices


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

Reply
Thread Tools
Posts: 1,076 | Thanked: 1,557 times | Joined on Jan 2011 @ Touring
#2601
I think if you are getting the USB symbol the USB port is good enough, though you could get a cheap hot air reflow unit and try reflowing the USB solder points, you might try putting some lead % solder paste on the pads area to improve the quality of the solder joints.
I had something similar with a Nexus tablet, after resoldering I was able to do full speed USB vs erroring out.
But the problem might also be the EMMC going bad and the bootloader stage process goes bad before it can complete a USB connection or boot. Which means too bad, I have had a few of these which never become available for flashing, especially a few tries fomr the Chinese "New"(refurbished) N900s a few years back.
 

The Following User Says Thank You to biketool For This Useful Post:
Posts: 474 | Thanked: 2,336 times | Joined on Oct 2009
#2602
Why would the USB symbol be appearing and then disappearing straight away then?
 
Posts: 474 | Thanked: 2,336 times | Joined on Oct 2009
#2603
The more I think about it the more I am convinced that if I could just get hold of a full BL-5J battery I might be able to get my phone going again.
But all 3 I have are dead and I have nothing to charge them up with. Everything I can find here in Brisbane that might help me charge them is either really expensive or would mean waiting weeks/months for something to arrive on a slow boat from China (or both) so I can't charge them.
 
Posts: 1,076 | Thanked: 1,557 times | Joined on Jan 2011 @ Touring
#2604
If you need an external charger find a cheap e-cigarette or phone battery charger and solder on two jumper wires for the + and - terminals and figure out how to make them stick without bending the contacts, this will directly charge the battery externally. You can find plenty of youtube bits on doing this to charge batteries and other stuff. I used to have an OpenMoko phone which has a problem similar to the n900 dead battery - cant start bootloader to begin charging, I just hacked off an old USB mouse and gave the battery 5 min at 5v, it worked and the phone was able to begin charging when I put the battery back in.
 
Posts: 474 | Thanked: 2,336 times | Joined on Oct 2009
#2605
I will be visiting some shops tomorrow including one that sells all sorts of electronic gear and has a few "universal" Li-Ion chargers listed on their website to see if they have any suitable chargers.
And I have posted on a local Aussie electronics forum asking if they have any leads on a suitable charger.

If I can find a charger that will do the job its better than just trying to feed current in directly and would give me an external charger I can use going forward.
 
pichlo's Avatar
Posts: 4,969 | Thanked: 14,897 times | Joined on Sep 2012 @ UK
#2606
http://talk.maemo.org/showpost.php?p...8&postcount=30
__________________
In particle accelerators atoms are indeed not only touching each others. But banging together in a massive explosive orgasm.
-- nieldk in a TMO post
 

The Following User Says Thank You to pichlo For This Useful Post:
Posts: 474 | Thanked: 2,336 times | Joined on Oct 2009
#2607
After buying an external charger yesterday and leaving one of my batteries charging all night I was able to get flasher to boot. Then I flashed Fiasco and installed backup-menu. Then I restored the BM backup I did before I started all this mess. After that I installed cssu-testing then I installed a few very specific packages on top of that (either .debs downloaded from cssu-devel or .debs build locally from cssu-git)

Now I have 3 BM backups that I am currently downloading to my PC for safety (one is from before installing cssu, one is just after installing cssu and the last one is after I installed everything)

And now I have an external battery charger that can charge BL-5Js (and other types of rechargeables including all kinds of Li-Ion packs)
 

The Following 3 Users Say Thank You to jonwil For This Useful Post:
peterleinchen's Avatar
Posts: 3,213 | Thanked: 5,830 times | Joined on Aug 2010 @ Ruhrgebiet, Germany
#2608
Good to hear/read!

It would have been another loss due to such a small issue...
__________________
SIM-Switcher, automated SIM switching with a Double (Dual) SIM adapter
--
Thank you all for voting me into the Community Council 2014-2016!

Please consider your membership / supporting Maemo e.V. and help to spread this by following/copying this link to your TMO signature:
[MC eV] Maemo Community eV membership application, http://talk.maemo.org/showthread.php?t=94257

editsignature, http://talk.maemo.org/profile.php?do=editsignature
 

The Following User Says Thank You to peterleinchen For This Useful Post:
Posts: 1,110 | Thanked: 2,586 times | Joined on Dec 2010
#2609
Glad you got it going again
 
Reply

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

Thread Tools

 
Forum Jump


All times are GMT. The time now is 23:36.