Sanwu TPA3116 CSR8635 Bluetooth 4.0

If you have problems with noise, try this fix.

Carried out on the revision of the Board 2.2.

The Board with heatsink removed:

Sanwu TPA3116 CSR8635 top

Sanwu TPA3116 CSR8635 top

Sanwu TPA3116 CSR8635 bottom

Sanwu TPA3116 CSR8635 bottom

The original wiring of the buffer between the CSR8635 and TPA3116 input:

Sanwu TPA3116 CSR8635 original circuit

Sanwu TPA3116 CSR8635 original circuit

The buffer is completely removed, the connection is symmetrical.

Sanwu TPA3116 CSR8635 modification

Sanwu TPA3116 CSR8635 modification

The end result:

Sanwu TPA3116 CSR8635 Noisefix

Sanwu TPA3116 CSR8635 Noisefix

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6 responses

  1. Ozgur says:

    Or tda7492p

  2. Ozgur says:

    Hi 360customs,
    Do you have pcb schematics of this circuit?
    If you do can you give them to me?

  3. Ben says:

    thanks a lot for this Info! 🙂

    Do you also have this problem with a very loud “welcome-beep-tone” if you powering it on?

    Therefore a “hack” (e.g. deactivating) would be awesome

    • 360customs says:

      This can be changed within the configuration keys. You’ll need an SPI-USB programmer to do so, they’re available on i.e. Aliepxress (3rd party).

  4. Andrei says:

    Do you have a copy of the PSkeys of this device? For some reason mine does’t open anymore.
    I tried installing the PSkeys of another speaker and now it opens, but it doesn’t work properly.

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