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<clapont>
hi everyone!
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<atk>
Damn
<atk>
I think some of the balls on the BGA chip on my N900 have cracked.
<atk>
I'm getting those infamous sim card issues.
<atk>
I guess it's time to find an old dried up pen and cut the spring into some pressure thingimajigs.
<DocScrutinizer05>
I wonder if there's a way to check what really defect
<DocScrutinizer05>
at least SIM contacts should show some electrical properties different from dangling wire
<DocScrutinizer05>
but there are so many more BGA ball connections on modem
<DocScrutinizer05>
first you might check if modem still responsive at all
<DocScrutinizer05>
pnatd might help
<DocScrutinizer05>
if you can talk to modem, you cpuld query quite a few status-related infos
<DocScrutinizer05>
like generic access to SIM, available networks (antenna / generic RF frontend)
<atk>
It works when I reboot the phone
<atk>
but I dropped my phone on a hard floor about a week ago and now it just stops working randomly until a reboot
<DocScrutinizer05>
hmmmm
<DocScrutinizer05>
not good
<atk>
yeah, I'm pretty annoyed about the drop, it worked perfectly well before then.
<DocScrutinizer05>
maybe first of all check signal quality to verify the mere antenna thingie has cobtact to the PCB
<atk>
how would I check the signal quality? When it works I get 5 bars.
<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
<atk>
hmm
<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
<Joerg-Neo900>
no tracking
<Joerg-Neo900>
no iinsurance
<Joerg-Neo900>
oops
<Joerg-Neo900>
please first try pnatd something like "ATI"
<Joerg-Neo900>
the AT-interpreter in BB5 and pnatd is pathetic, but a few useful data bits are available for sure
<atk>
just scraped at them with a precision screwdriver, we'll see what happens
<atk>
they were all quite dirty
<Joerg-Neo900>
check the pads in antenna plastic blob, they often look really terrible
<Joerg-Neo900>
ought to be gold plated and shiny
* 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
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<atk>
Looks promising, I got network time on the boot screen.
<atk>
Well, I have a network connection again
<atk>
I'll use it for a day and see if it breaks again.
<Joerg-Neo900>
:-D
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<sixwheeledbeast>
check battery antennas and sim tray are not damaged or loose from the drop
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<atk>
the sim tray is as loose/tight as it has ever been
<atk>
same with battery
<atk>
but yeah, the antenna contacts seemed a bit dirty
<atk>
and this phone has been in use for like 4 years now
<atk>
and probably 1 to 3 years by the original owner?
<atk>
maybe more
<atk>
actually, when I got it, it looked like the original owner had installed a new kernel so maybe he was a power user
<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
<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
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<Joerg-Neo900>
too many prospect customers thought they better wait until we're shipping before they place an order
<Joerg-Neo900>
now it's too late, the opportunities dwindled
<rEv9>
Joerg-Neo900: I understand :/
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<Joerg-Neo900>
it's a pity. Sorry for not having better news
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