Audio Shiled not working

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NiiKu

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I have try to test my Teensy 4.0 and audio shield by example code in Teensyduino name "Part 1_02_Hardware_Test" but it doesn't have anything in my headphone. but serial monitor still working. I have setup follow this

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Are the Teensy pins soldered to the audio board?
Can you show a photo of the bottom of the audio board?

Pete
 
Yes, soldering is essential. The pins aren't making a proper electrical contact.

You will also need to solder the pins on the Teensy too.

Pete
 
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