clapont | hi everyone! | 08:57 |
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atk | Damn | 17:01 |
atk | I think some of the balls on the BGA chip on my N900 have cracked. | 17:01 |
atk | I'm getting those infamous sim card issues. | 17:01 |
atk | I guess it's time to find an old dried up pen and cut the spring into some pressure thingimajigs. | 17:01 |
DocScrutinizer05 | I wonder if there's a way to check what really defect | 17:04 |
DocScrutinizer05 | at least SIM contacts should show some electrical properties different from dangling wire | 17:05 |
DocScrutinizer05 | but there are so many more BGA ball connections on modem | 17:05 |
DocScrutinizer05 | first you might check if modem still responsive at all | 17:06 |
DocScrutinizer05 | pnatd might help | 17:06 |
DocScrutinizer05 | if you can talk to modem, you cpuld query quite a few status-related infos | 17:06 |
DocScrutinizer05 | like generic access to SIM, available networks (antenna / generic RF frontend) | 17:07 |
atk | It works when I reboot the phone | 17:09 |
atk | but I dropped my phone on a hard floor about a week ago and now it just stops working randomly until a reboot | 17:09 |
DocScrutinizer05 | hmmmm | 17:09 |
DocScrutinizer05 | not good | 17:10 |
atk | yeah, I'm pretty annoyed about the drop, it worked perfectly well before then. | 17:10 |
DocScrutinizer05 | maybe first of all check signal quality to verify the mere antenna thingie has cobtact to the PCB | 17:11 |
atk | how would I check the signal quality? When it works I get 5 bars. | 17:12 |
DocScrutinizer05 | it's a C-spring that sits on a copper (gold?) pad for years. collecting dirt and oxides around the contact point. Now a hard impact could minimally relocate the C-spring contact point, right into the dirt zone | 17:12 |
atk | hmm | 17:13 |
atk | Might be, the phone I took this motherboard out of literally looked like someone had shoved it up a car exhaust pipe for a week | 17:13 |
Joerg-Neo900 | no tracking | 17:22 |
Joerg-Neo900 | no iinsurance | 17:22 |
Joerg-Neo900 | oops | 17:22 |
Joerg-Neo900 | please first try pnatd something like "ATI" | 17:27 |
Joerg-Neo900 | the AT-interpreter in BB5 and pnatd is pathetic, but a few useful data bits are available for sure | 17:28 |
atk | ATI just gives "Nokia" | 17:32 |
atk | lol | 17:32 |
Joerg-Neo900 | https://i.imgur.com/Phpr47G.png | 17:32 |
atk | same on my screen | 17:33 |
Joerg-Neo900 | so the modem is up and running and the comm lines to OMAP are working | 17:34 |
atk | hmm | 17:34 |
Joerg-Neo900 | https://radekp.github.io/qtmoko/api/atcommands.html | 17:35 |
Joerg-Neo900 | haha radekp/openmoko how funny I didn't even see | 17:35 |
Joerg-Neo900 | at+cfun? | 17:36 |
Joerg-Neo900 | +CFUN: 1 | 17:36 |
Joerg-Neo900 | at+cfun=? | 17:37 |
Joerg-Neo900 | +CFUN: (0,1,4),(0,1) | 17:37 |
Joerg-Neo900 | =? is "what are the allowed parameters?" ? is "what is current state?" | 17:38 |
Joerg-Neo900 | +CFUN is current state of modem | 17:38 |
Joerg-Neo900 | related e.g. to airplane mode etc | 17:38 |
Joerg-Neo900 | AT+CSQSignal quality | 17:39 |
Joerg-Neo900 | ERROR on N900 | 17:39 |
Joerg-Neo900 | what a crippled AT interface | 17:39 |
atk | hmm | 17:40 |
atk | on mine at+csq gives: +CSQ: 99,99 | 17:40 |
Joerg-Neo900 | ed | 17:40 |
Joerg-Neo900 | what the | 17:40 |
Joerg-Neo900 | Oh I see, no "?" needed | 17:40 |
Joerg-Neo900 | +CSQ: 15,99 | 17:41 |
atk | hmm | 17:41 |
atk | so 99 probably means the worst signal quality possible? | 17:41 |
Joerg-Neo900 | 99 is prolly same as "no signal" | 17:41 |
Joerg-Neo900 | yes | 17:41 |
atk | I'll open it up and look at the aerial thing | 17:41 |
Joerg-Neo900 | :nod: | 17:42 |
Joerg-Neo900 | check SIM maybe | 17:42 |
Joerg-Neo900 | moment please | 17:42 |
Joerg-Neo900 | AT+CIMI | 17:43 |
Joerg-Neo900 | 262074910014095 | 17:43 |
atk | I get an error | 17:45 |
Joerg-Neo900 | https://www.sierrawireless.com/resources/documents/support/2130617_supported_at_command_reference-v2.4.pdf | 17:49 |
Joerg-Neo900 | error means you're not logged in to network | 17:49 |
Joerg-Neo900 | this command queries IMSI | 17:49 |
Joerg-Neo900 | AT+CNUM my own number | 17:51 |
atk | alright, which contact is the one for the antenna? | 17:52 |
Joerg-Neo900 | there's a "contacts" whitepaper n resources IIRC | 17:52 |
Joerg-Neo900 | http://neo900.org/stuff/werner/springs/ | 17:54 |
Joerg-Neo900 | P703/4/5 | 17:55 |
Joerg-Neo900 | atk: you found it? | 17:56 |
atk | yeah | 17:57 |
atk | I found the 3 contacts | 17:57 |
atk | just scraped at them with a precision screwdriver, we'll see what happens | 17:57 |
atk | they were all quite dirty | 17:57 |
Joerg-Neo900 | check the pads in antenna plastic blob, they often look really terrible | 17:57 |
Joerg-Neo900 | ought to be gold plated and shiny | 17:58 |
* Joerg-Neo900 suddenly got an idea of the real reason the manufs opted for watertight smartphones: suddenly no more problems with dirt inside device, at all | 18:00 | |
atk | Looks promising, I got network time on the boot screen. | 18:02 |
atk | Well, I have a network connection again | 18:02 |
atk | I'll use it for a day and see if it breaks again. | 18:02 |
Joerg-Neo900 | :-D | 18:02 |
sixwheeledbeast | check battery antennas and sim tray are not damaged or loose from the drop | 18:34 |
atk | the sim tray is as loose/tight as it has ever been | 18:48 |
atk | same with battery | 18:48 |
atk | but yeah, the antenna contacts seemed a bit dirty | 18:48 |
atk | and this phone has been in use for like 4 years now | 18:49 |
atk | and probably 1 to 3 years by the original owner? | 18:49 |
atk | maybe more | 18:49 |
atk | actually, when I got it, it looked like the original owner had installed a new kernel so maybe he was a power user | 18:49 |
rEv9 | Joerg-Neo900: you should update the webpage/topic with what you said on http://maemo.cloud-7.de/irclogs/freenode/_neo900/_neo900.2019-04-15.log.html -- that you're looking for someone to work on the proto_v2 layout. maybe someone else can help out ? | 19:45 |
rEv9 | I miss using my N900 :D | 19:46 |
Joerg-Neo900 | rEv9: sorry, the time was faster than Neo900 evolution. The project isn't really plausible anymore. Too many roadblocks that can't get overcome, unless we would find a sponsor for STEP2 | 19:55 |
Joerg-Neo900 | even if we could finalize layout for proto_v2, we have no more funds to build it, and even if we coould build it, we couldn't find enough mech-kits (display, case etc) to produce the number of devices needed to break-even on production cost | 19:57 |
Joerg-Neo900 | too many prospect customers thought they better wait until we're shipping before they place an order | 19:58 |
Joerg-Neo900 | now it's too late, the opportunities dwindled | 19:59 |
rEv9 | Joerg-Neo900: I understand :/ | 20:16 |
Joerg-Neo900 | it's a pity. Sorry for not having better news | 20:46 |
sixwheeledbeast | Open source alternative to GPS seems interesting https://www.open-electronics.org/aweigh-the-open-source-alternative-to-gps/ | 22:40 |
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