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Repair guides and disassembly information for Samsung's premium foldable smartphone, the Galaxy Z Fold3, released alongside the Flip3 in August 2021.

Sound is acting up

I have an issue with the sounds on my phone. It doesn't play when I have the phone folded all the way, but they work when I'm about to close it at an angle. works fine when the fold is closed and the front screen is on, but the bigger screen doesn't play sounds.

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Generalmente los problemas de audio que se presentan en los Z Fold, se deben a daños en las cintas o cables Flex, que se parten y provocan inicialmente un falso contacto, por lo que de forma gradual se pierde el audio, puedes estar escuchando algo y de momento dejar de escucharlo y podrás comprobar que tienes audio activado y aunque aumentes volumen, no escuchar nada. Como síntoma puedes comprobar que el audio regresa al abrir o cerrar las pantallas, es decir pasar de la pantalla primaria a la secundaria o viceversa y tal como lo describes, en determinado ángulo funciona. De ocurrir esto, estas confirmando que el problema son las cintas o cables Flex y deben ser sustituidos. Generalmente esas cintas vienen para 5000 operaciones de open/close, lo que más o menos se traduce en 2 o 3 años de vida útil de las cintas.

Spanish->English translation:

Generally, audio problems in Z Fold phones are due to damage to the flex cables or ribbons, which break and initially cause an intermittent connection. This gradually leads to a loss of audio; you might be listening to something and then suddenly the sound cuts out, even though the audio is still enabled and you've increased the volume. A ​​symptom of this is that the audio returns when you open or close the screens, that is, switching from the primary to the secondary screen or vice versa, and as you describe, it works at a certain angle. If this happens, it confirms that the problem lies with the flex cables or ribbons, and they need to be replaced. These cables are generally designed for 5,000 open/close cycles, which translates to approximately 2 or 3 years of lifespan for the cables.

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Haven't seen any repair information yet on how to replace those cables, but if you scroll to 4:45 in the teardown video, you'll see those two cables, although we have no idea which one might be causing your problem.

Samsung Galaxy Z Fold3 Teardown

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