-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Somebody in the thread at some point said:
|> What I don't understand is how we get from 1.7GHz "infestation", which |> is clearly an issue since a bead on p4 of the headset jack does |> something, to these LF "dents" on MICBIAS. | My theory is RF is spoiling VREF, by entering the Wolfson chip via arbitrary | path (actual path doesn't matter, as RF can "jump" inside chip) and being | rectified on some nonlinear component of the circuitry inside chip You might remember I repeatedly proposed this ever since I found the errors around Vmid and Vref caps, and keep noting I can make the buzz come by scope probe on Vref. Most recently, earlier today on this thread... Still, it sounds encouraging we found something to agree about. | Well maybe luckily we *might* eventually find a magic place for a (33pF) C | somewhere near Wolfson chip, to rework GTA02 out in the field this way. | Anyway I'd rather expect this magic fix to be found by try and error, rather | than probing on a setup that's completely changed by mere applying a probe to | it. We even agree about the possibility to find a better rework too now, excellent. - -Andy -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkjXpcsACgkQOjLpvpq7dMpT+wCfZBvY2NDvX9T1nBxGimQKlN/T GNIAni8oWKSvw2HLbQLzBONleSR7E+Mg =di1A -----END PGP SIGNATURE----- _______________________________________________ hardware mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/hardware
