| * enyc meows | 13:58 | |
| cmpxchg | hm, anyone still using N900 here ? | 22:42 |
|---|---|---|
| sicelo | very man of us | 22:43 |
| sicelo | *many | 22:43 |
| cmpxchg | got some modem comms issues recently - not sure if network-triggered or a problem developed in the hardware (xtal or power raming etc running out of spec etc) | 22:43 |
| cmpxchg | *ramping | 22:44 |
| sicelo | what is the issue? | 22:44 |
| cmpxchg | sicelo: emergency calls disabled message in a yellow popup, due to 'a communciations error' - 'you might have to reboot your device' | 22:45 |
| sixwheeledbeast | hardware | 22:45 |
| cmpxchg | on another N900, the simcard is still accepted etc | 22:45 |
| cmpxchg | and it did work once tonight | 22:45 |
| cmpxchg | perhaps time to switch to the other N900 | 22:46 |
| sixwheeledbeast | most things will be a temp fix. normally a reflow is required. | 22:46 |
| cmpxchg | oh wait - I have a reflow oven | 22:47 |
| cmpxchg | but I worry about the backlight and keypads on the PCB | 22:47 |
| cmpxchg | camera not to forget | 22:47 |
| cmpxchg | are there multiple hardware revisions to worry about when copying over the NAND flash and eMMC data to the other unit ? | 22:48 |
| sixwheeledbeast | people do things like pack the sim or put springs on the modem chips. TMO is the best place to look for thread on the topic. BTW I am not recommending any of the methods above i have never had the issue consistently (yet) | 22:48 |
| sixwheeledbeast | ~bm | 22:48 |
| infobot | backupmenu is probably http://talk.maemo.org/showthread.php?t=63975, or one-click install handling dependency issues: http://maemo.cloud-7.de/maemo5/et_al/HAM-catalogs/BM.install | 22:48 |
| sixwheeledbeast | ^probably the most useful tool for switching devices | 22:48 |
| sixwheeledbeast | ~tmo | 22:49 |
| infobot | hmm... tmo is http://en.wikipedia.org/wiki/TMO, or http://talk.maemo.org, or http://de.wikipedia.org/wiki/Terrestrial_Trunked_Radio#TMO. It's *not* T-MO (see ~T-MO) or trolls, morons, oxen. | 22:49 |
| sixwheeledbeast | http://talk.maemo.org/showthread.php?t=66870 | 22:52 |
| cmpxchg | thx, both models are N900 RX-51 | 22:53 |
| cmpxchg | I also did see a slightly oxidized tiny battery soldered on the PCB - wonder why that is not enough to power an RTC to keep time - schematics of N900 available somewhere ? | 22:56 |
| sixwheeledbeast | yes somewhere I forget where | 23:11 |
| sixwheeledbeast | ~bupbat | 23:11 |
| infobot | i heard bupbat is use the capacitive type, LiIon are breaking during 12 months, or http://www.digikey.de/product-detail/de/PAS414HR-VG1/587-2157-1-ND/1959153, or https://hbe-shop.de/Art-2112777-TAIYO-YUDEN-PAS414HR-VA5R-KONDENSATOR006F-33V-STAKED-COIN, or http://talk.maemo.org/showthread.php?t=90864 | 23:11 |
| sixwheeledbeast | ~schematics | 23:12 |
| infobot | [schematics] http://wiki.maemo.org/N900_Hardware_Schematic, or http://www.google.de/search?q=nokia+n900+rx-51+schematics.pdf&oq=Nokia_N900_RX-51_schematics | 23:12 |
| sixwheeledbeast | well that works | 23:12 |
| cmpxchg | thanks! batt not available, 80 mF replacement needed 3V3... thanks - searching... | 23:18 |
| cmpxchg | orig datasheet https://media.digikey.com/pdf/Data%20Sheets/Taiyo%20Yuden%20PDFs%20URL%20links/PAS%20Coin%20Type%20Capacitor.pdf 4.8mm dia 1.4 mm height EDLC type | 23:28 |
| cmpxchg | replacements need .6 mm more height, variants that are lower have only 11 mF instead of 60 mF | 23:31 |
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