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EEVblog => EEVblog Specific => Topic started by: EEVblog on October 17, 2025, 12:39:00 am

Title: EEVblog 1714 - Presonus Eris Speaker REPAIR (Capacitor Pop)
Post by: EEVblog on October 17, 2025, 12:39:00 am

Classic intermittent "popping" noise from this Presonus Eris 5 studio monitor speaker. Electrolytic Capacitors are suspect number one.

00:00 - Faulty Presonus Eris 5 speaker. Classic "popping" sound.
03:48 - Teardown
07:16 - Testing for popping again
07:36 - Testing for hiss
08:32 - Rectified voltage testing
09:34 - Woah, that's that?
10:26 - Getting the PCB out
10:55 - A look at the PCB under the microscope
TAD7294:
https://www.st.com/resource/en/datasheet/tda7294.pdf (https://www.st.com/resource/en/datasheet/tda7294.pdf)
13:15 - Missing parts
14:39 - Removing the capacitors
16:00 - Measuring the main filter capacitors
17:14 - The Preamp PCB
18:08 - What is the most likely culprit?
20:21 - In-circuit  ESR testing
21:32 - All new capacitors
24:15 - Soldering in new caps and testing
25:38 - What did I goof?
27:57 - Conclusion

https://www.youtube.com/watch?v=xVp7yund84w (https://www.youtube.com/watch?v=xVp7yund84w)

Title: Re: EEVblog 1714 - Presonos Eris Speaker REPAIR (Capacitor Pop)
Post by: Simmed on October 17, 2025, 12:47:37 am

*presonus

Title: Re: EEVblog 1714 - Presonus Eris Speaker REPAIR (Capacitor Pop)
Post by: Brumby on October 21, 2025, 05:31:09 am

@EEVblog

Dave ..... Has the popping stopped?