June 24, 2022 at 4:28 pm
#6127
Have you checked the mute relay? This is usually the culprit when the speaker 2 outputs are working fine.
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No I did not check this because there is audio on the speaker pin. I would expect that an issue with the muting relay would prevent audio from passing to the speaker port. As far as I can see it is much earlier in the signal processing?
When I trace the audio there is a signal on the output pin of the speaker port. This signal dissapears when I attach a load (speaker) to the port. I can’t see any damage on the port, there are no shorts on the pins. Voltage of 4.5v on the pin for the dataline seems correct.
- This reply was modified 1 year, 9 months ago by notwist.