Mic volume extremely soft after buzz fix with SHR unstable

Al Johnson openmoko at mazikeen.demon.co.uk
Tue Feb 23 13:15:58 CET 2010

On Tuesday 23 February 2010, Jan Girlich wrote:
> Am Dienstag, den 23.02.2010, 10:03 +0300 schrieb Vladimir Berezenko:
> > В Пнд, 22/02/2010 в 16:00 +0100, Jan Girlich пишет:
> > > I'm afraid something might be gone wrong with my buzz fix. Had a look
> > > at it yesterday evening and noticed one of the soldering points is
> > > really weak. Maybe that could be a reason? Too little of a connection
> > > from the capacitor to the resistor?
> >
> > It might be that you have your mic dead.  I've replaced my own because
> > it came already dead. The symptoms were the same. You must cry loud to
> > micro and on the other end someone hears you very silent.
> Any way to conclusively check if it's the mic? And how did you get it
> replaced? I wouldn't be able to do the soldering work myself.

The short to ground at R4303 means that even with a working mic you will have 
little to no signal. You will need to get that fixed before you can test the 

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