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PC Audio Creative GigaWorks S750 7.1 speaker repair, A short guide and info with pictures...

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chimpy P
post Mar 7 2021, 12:45 PM

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Hi all,

While cleaning the audio processing board, PN: PBMs0490c0420, a surface mount capacitor popped off with the glue. The capacitor is C11 and appears to be connected to component U3 (part 4556a).

Does anyone know the rating for C11? The capacitor is located next to U3, and resistor R29; from my orientation it is the top right of the board. I have a suspicion that capacitance is the same as C13
chimpy P
post Mar 10 2021, 01:25 PM

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All,
In case anyone needs to know in the future, C11 and C13 appear to be 100pF 0603 capacitors. MichaelD was kind enough to measure C11 and I removed c13 and measured it as well. The opamp the capacitors are connected to is rated at +/-18 volt for the rails, so a 25V or 50V rating should be sufficient. I've ordered some 100pF, 50V capacitors to replace the one that was lost.
chimpy P
post Mar 27 2021, 12:27 PM

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I just want to say thanks to everyone who provided information for these repairs. I just put in the last two capacitors and electronic silicone today and finally have sound again after more than a month.

All 7 speakers are wired up again and I'm using them gently for a few days while the silicone fully cures.

 

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