SCART audio not being injected into hdmi

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  • August 12, 2017 at 5:32 AM #14355
    vgdiy
    Participant

      I got around to getting my 1.6 ossc fixed but now I notice that im not getting any audio through the hdmi cable when using a SCART cable. I do get audio out of the J6 analog 3.5mm audio jack when using SCART. Does anyone have any ideas?

      August 12, 2017 at 7:38 AM #14356
      Morpheus_79
      Participant

        Getting analog sound over the 3.5mm jack doesn’t say much, since SCART-audio-in and 3.5mm-audio-out are directly connected, when switch SW4 is on the right position. At least it is a good indicator, that audio is sent in.

        Since your oscillator was soldered the wrong way around, you should take a look at U8. It’s the audio A/D converter. The round indentation on one of its corners should face towards the HDMI connector. If it faces towards the SCART Connector, it was soldered wrong too.

        If U8 was soldered right, you should check its solder joints and the joints of oscillator Y2.

        Keep in mind: you need the audio enabled firmware (the one with the -aud in the filename) flashed onto the OSSC for the audio A/D converter to work! Since my own OSSC 1.6 is still in the works, i don’t know the following for sure: if you already use the last audio enabled firmware without any luck, you maybe(???) need a special audio enabled firmware for the new PCM1862 A/D audio converter chip (since the audio addon board for the OSSC 1.5 uses a different chip without its own oscillator). But i could be wrong.

        August 12, 2017 at 8:49 AM #14359
        marqs
        Participant

          If you’ve flashed the firmware yourself, then you’ll need to build the latest code on github which includes support for PCM1862. It will be included officially in v0.78 release that I’m planning to publish next week.

          August 12, 2017 at 2:40 PM #14362
          Morpheus_79
          Participant

            ‘Borti4938’ said, he included the support for the PCM1862 in his latest 0.77 build. So if you didn’t want to wait a few days for the official release, you could use his ossc_0.77-aud.jic or ossc_0.77-aud.bin from here:

            https://github.com/borti4938/Audio4OSSC/tree/master/fw-builds

            August 13, 2017 at 2:00 AM #14374
            vgdiy
            Participant

              ossc_0.77-aud.bin did the trick, audio is working great. thanks everyone

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