Dacmagic Plus repair

[TheMadcap]

Hello everyone,

I am opening this thread to seek out help while trying to repair my dacmagic plus. I originally opened a thread in diyaudio forum as " Dacmagic plus outputs only high pitch noise " if you want to check that out. I don't if it is allowed to share link from another forum.

My problem was having high pitched noise as output. Usb and optic inputs, which one I am using doesn't matter. Here is a video showing that.

It is suggested to change capacitor c148 to fix the problem. While I was trying to desolder c148 I broke one pad of the slot. Here I attach pictures of it. There is a service manual for dacmagic which also has the circuit diagram. However it doesn't cover for dacmagic plus and I was not able to find a manual for dacmagic plus. If I knew where does it connect I could simply solder a jumper wire. I tried to observe wether a path is connected to broken pad or not and I think that pad goes other side of the board. Do you think that pad is connected to the ground? How should I proceed?

 

[TheMadcap]

Update: I scraped small piece from the back and soldered a jumper wire. Then I checked if the three dots on top of the board connected to the place I scraped and dmm beeped so it is connected. I checked negative side of 100u 25v cap and other 470u cap they all seem connected so I assume all three caps negative side connected to the ground.

So I replaced the c148 with new capacitor and powered it up. Failure. Dacmagic now doesnt show any input. Normally input selection leds cycles up 1-2 time at startup. Now it doesnt stop cycling. I don't know what does that mean. I checked voltage levels on caps. c148 show around 1.2V. Other 470uF cap shows around 5V. 100u cap shows 6mV. Something seems wrong with the 100u cap. I changed it as well with new one but nothing changed. If I remove caps and power device up same thing happens, led cycles forever.

 

[stoelegaard]

Did you ever get an service Manual for the DacMagic Plus or just the schematics?