Zapdac mk3 troubles

ghisdal · 2nd September 2007, 07:15 PM

I have a Zapdac3, print board says 1996 vintage. When connecting a digital source the DAC distorts the sound pretty badly. You can easily hear what is being played, but with audible distortion.

I have tried with 4-5 sources and it happens with all of them. The only source it works with is a Squeesebox V3. This player has a volume control, and if I keep the volume below about 50 (of a 100) then it plays very nicely. I think the digitally controlled volume of Squuesebox regulates the output voltage, which means that the Zapdac somehow only accepts low output sources.

Does anyone know what the solution could be? I have tried the different jumper settings on the inside but they don't help. I have done some DIY so if you could give me some pointers on what to check (measuring points and so in) I can probably fix it myself if I know what to look for.....

2nd September 2007, 07:15 PM	#1
ghisdal diyAudio Member Join Date: Nov 2006	Zapdac mk3 troubles I have a Zapdac3, print board says 1996 vintage. When connecting a digital source the DAC distorts the sound pretty badly. You can easily hear what is being played, but with audible distortion. I have tried with 4-5 sources and it happens with all of them. The only source it works with is a Squeesebox V3. This player has a volume control, and if I keep the volume below about 50 (of a 100) then it plays very nicely. I think the digitally controlled volume of Squuesebox regulates the output voltage, which means that the Zapdac somehow only accepts low output sources. Does anyone know what the solution could be? I have tried the different jumper settings on the inside but they don't help. I have done some DIY so if you could give me some pointers on what to check (measuring points and so in) I can probably fix it myself if I know what to look for.....

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