ES9023 / WM8804 S/PDIF DAC Group Buy

[korben69]

skouliki have you remove flux ?
From the pic, I suspect R1 and U3 solders, can't see C2.
Check voltage on MIC's 3.3 & 3.6v.

[pchw]

Originally Posted by skouliki

Hi Korben.
My psu is a Salas V1.0 and my source is a Pionner PD D6 J. I have attached a pic. Any suggestions are welcome

Check the orientation of Q2 (the 50Mhz oscillator). If you parts is identical to the BOM, it looks like oriented wrong. You can take a look at my picture in post 303.

[jean-paul]

Razorsharp eyesight !

[korben69]

Hi Skouliki and All
As previoulsy told, the pic with voltages on my working DAC (no SPDIF and Output connexions).
Measures taken from my built, they could be close to yours.
Hope this helps

[korben69]

No comments ?

[skouliki]

Hi korben and all
Thanks again guys for all the suggestions. Unfortunately i didnt had time to troubleshoot the dac today. Hopefully i'll do it tomorrow

[ekidnah09]

Don't forget to take the Pioneer D6 out of pure audio mode it does not output SPDIF in pure audio mode.

I hope this helps.

[skouliki]

Hi all.
Did some voltage measurments using the very useful picture posted by korben:
c29=3.30
c26=3.23 (low?)
c22=3.57
c19=3.29
c8=3.28

c1=1.60
c7=3.22
c5=3.30
c28=1.93
c25=1.88
c2=3.22
c21=2.23
c3=0.53
c4=0.82
c10=3.56
c13=3.52

I have pure mode off in PD D6 and for Q2 orientation i attached a picture showing the dot on the surface.
Im using lm7805 to feed the dac

[korben69]

Hi skouliki

Q2 is in right position as shown in your pic.
Measures seems to be Ok from those you've measured.
Could you please test voltage on : Q2 - C10 - C10b - C11 - C32 - C9 - R11
Carrefuly check pins from ES9023.
WM8804 seems Ok, but check it too.
How much DC offset at the output ?
Hope this helps

Phil

[tome]

HI, here is my building report....
I finish my board yesterday. I was following Jan-Paul instructions, first i check voltages from regulators, then i solder 2 IC's and check voltage and curent. Voltages was OK and total curent on 5V is about 50ma. DAC is not working until i close jumper. When I close the jumper i hear music from speaker, maybe Skoulike have the same problem. I see on his pic that jumper is open and there is no U7 and 2 other components.
First sound impression is promising, i try on labaratory power supply and my test speakers, CD is marantz cd52mk2. I'll write more about sound when i receive and finish PSU boards and put everything in metal case after that i'll do more listening tests.