[Report] - Buzz fix
steve at openmoko.com
Sun Feb 1 03:19:06 CET 2009
There is no proceedure defined by OM for how the non DIY guys can fix
their Phones. Let me recap exactly where we are.
We have a SOP for people who want to do it by themselves or for
others, but there are several other elements missing from the process
that would allow us to help the non DIY folks. One thing that probably
hasnt been explained very well is that the Buzz problem does not occur
for everyone in every place. For example I have never heard it. I live
in SF and primarily use an 850 phone. Sean once visited to show me what
the buzz actually sounded like. He produced a phone, we turned it on. No
buzz. I've been told that the buzz is most prominent on 900Mz and that
if your phone happens to connect on 850, 1800, or 1900 that the buzz is
absent or less pronounced. This has yet to be verified. So one issue
is this: if People send in phones the first thing one wants to do is
test whether the phone in question actually has a buzz and how bad the
buzz is. We need to develop a robust test for that. Then the SOP would
be applied. So, we have to develop an SOP for the particular rework
shop(s) that would do the work. And we have to test that rework with a
good number of phones. Testing the rework means we have to have some
sort of objective test that the buzz has actually been fixed. The final
question is will the end user be able to verify the difference. what if
they can't? Ideally, they would get an incoming test report and an exit
test report. As you can see there are a lot of issues here and for the
most part they are issues that OM have never dealt with before. So most
everyone is learning. Those of us who have been through it before
understand that this process will be painful and may not
even be possible. Then come the issues of Logistics and costs and
warranty. We don't have departments dedicated to these kind of issues
so we basically have to work the issue as well as all the other issues.
Torsten Sievers wrote:
> Hi Steve,
> many thanks to you guys for finally fixing the Buzz Issue.
> Is there any procedure defined by OM how the non-DIY-guys can fix their
> phones? As DIY will break warranty (given by reseller) i have to rely on a
> way supported by OM.
> On Friday 26 December 2008 07:19:41 Steve Mosher wrote:
>> I should have pointed out that if people can do before and after
>> recordings that would be exceptionally cool. I guess I shoulda asked B4
>> If you've done a fix, send me photos, your contact information
>> and I'll send you some belated gifts for the holiday.
>> Special bonus for people who post vids.
>> Just send a mail to elsie, chelsea and me and we'll decide on some
>> Maybe Sean can do a special T shirt for the DIY masters.
>> Michael Zanetti wrote:
>>> I just wanted to let you know that I have applied the Buzz fix to my
>>> Freerunner revision A5 according to this  paper and indeed the buzz is
>>> completely gone. Including the echo fix my Neo converted from the coolest
>>> toy to the coolest _phone_ I've ever had.
>>> I'm flashing 2008.12 right now. *very excited*
>>> Very big thanks to everyone involved working out this one!
>>> And thank you openmoko (the whole team) for this wonderful product!
>>>  http://people.openmoko.org/joerg/GSM_EMI_noise/big-
>>> Openmoko community mailing list
>>> community at lists.openmoko.org
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