Adding optical input to Weilang DAC7

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Roppu

Roppu

Member
Joined 2021
#1
Hi.
I have a Weilang Dac7 with USB and coaxial input. It only has a "dummy" optical connector. It seems like it was an optional feature and I did not explicitely ask for it when I bought it 10 years ago. Or maybe they "forgot" to set it up? 😀
I guess this is not an easy task but in case it was not so, could I wire the connector to make it work? It has a WM8805 spdif transceiver and I was reading this is then doable.
I gather I need the proper voltages from the PCB and I see there are +/- 3.3V. Where should I get the signal from? It already has got a switch to choose between USB and spdif input.
I think I found the schematics on the web but I do not know whether it is allowed uploading it here.
Thank you!
 
#2
Gee, without having it in front of me I would have no idea. Best if you have a service manual including schematic for it. Otherwise we would need hi-res pics of both sides of the PCB (or PCBs if there is more than one). Pics need to be good enough to be able read part numbers, etc.
 
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#4
Markw4 said:
Gee, without having it in front of me I would have no idea. Best if you have a service manual including schematic for it. Otherwise we would need hi-res pics of both sides of the PCB (or PCBs if there is more than one). Pics need to be good enough to be able read part numbers, etc.
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😀
You can see the schematics in the Markw4 post, after yours. Thank you, I will take it apart but I should wait for a while because I'm already fixing my amplifier and I do not want to have too many bits around
 
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