Peder Posted November 1, 2019 Report Share Posted November 1, 2019 It reads the disc Ok and starts playing. On both analog and digital outputs there are just noice. And the audio VU meter is in peak on both channels. Any tip or clue here ? Regards Pete/Norway Quote Link to comment Share on other sites More sharing options...
kgallen Posted November 2, 2019 Report Share Posted November 2, 2019 Any notable events to report like bad mains power or storms? Can you record on it and play back ok in another machine? Do all other functions seem to work ok like display, remote, editing functions? I’m trying to narrow down if one of the internal power rails has gone bad. Are you electronics minded/competent? The service manual is here: http://www.minidisc.org/manuals/sony/service/sony_MDS-302_service_manual.pdf (Although unusually there are no schematics which is a snag...p33-52 are missing, I’ll look around.) Kevin Quote Link to comment Share on other sites More sharing options...
sfbp Posted November 2, 2019 Report Share Posted November 2, 2019 1. is this a new machine (ie was it working previously in your hands)? 2. Agree with Kevin's comment about disks that play elsewhere or that are known to be OK. 3. Does the MDS-302 have a AD-DA mode where it acts as a DAC, ie you give some input and it merely repeats that input outwards? If so, that would eliminate a drive fault. Welcome to the group, Peder! Quote Link to comment Share on other sites More sharing options...
kgallen Posted November 2, 2019 Report Share Posted November 2, 2019 Also can you clarify if the noise is dominant at normal listening levels or only if you wind up the volume on your amp to some very high level? Is the noise present in the same way on the headphone output? Quote Link to comment Share on other sites More sharing options...
kgallen Posted November 3, 2019 Report Share Posted November 3, 2019 I can't find an MDS-302 service manual anywhere that contains the schematics or PCB layouts. I understand the MDS-S30 is essentially the same machine. I've found an MDS-S30 SM that does contain the schematics... https://freeservicemanuals.info/en/servicemanuals/download/Sony/MDS-S30.pdf Quote Link to comment Share on other sites More sharing options...
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