Sony TCM-450 Microphone Input and Audio Output Replacement

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Desolder the third and fourth point connecting the audio output port.
After removing all of the solder, gently remove the audio output.
There are resistors near this piece do not touch them with soldering iron or you will have to put them back in place using the soldering iron.
There will be 2 Solders with white lines under the solders and a label of SP these are speaker solders you do not need to solder/desolder them for this guide.
If the device does not feel like it can be removed there may still be solder on the audio output. You will need to go back to the previous step.

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