DAC Broken ?

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dennis9819

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Hi i have the following problem :
I was working on a sound module for a steam locomotive based on the teensy 3.2. Suddenly my teensy started to behave strange and the audio signal got weak and distorted. Same code works fine on another teensy. There is no circuitry behind the DAC pin. Audio signal is going straight into my mixer. Is my DAC broken or can I fix this problem somehow ?
Thanks for your help.
 
You are missing a fair bit of information here:

Can you load blink
Is your code still doing other things right (does it have lights or serial debug that still works)
Does the DAC example code still run: https://www.pjrc.com/teensy/teensy31.html -
What does the DAC show when you test it's output, scope is best but if you slow up the example code a multimeter would also work.

Most likely you exceeded the current limits of the DAC and killed it's final stage driver, though a decent mixer shouldn't have done that.
 
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