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"Subbu DAC V3 - ES9023/WM8804 SPDIF & Power Supply PCB" Group Buy
"Subbu DAC V3 - ES9023/WM8804 SPDIF & Power Supply PCB" Group Buy
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Old 5th November 2013, 08:39 PM   #561
atupi is offline atupi  Romania
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Join Date: Oct 2010
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Default Let the party starting ...

Finished one power supply giving steady 4.98V

I like that smd pads are confortable size. Soldered one Wm8804 without problems.
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File Type: jpg naked pcb.jpg (136.4 KB, 386 views)
File Type: jpg finished power supply.jpg (70.7 KB, 383 views)
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Old 5th November 2013, 08:57 PM   #562
cristi289 is offline cristi289  Romania
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Very nice, Adrian! You do a great job. Call me when they are ready...
Cristi.
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Old 5th November 2013, 09:21 PM   #563
freeman is offline freeman  United States
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Default grounding scheme for dac

This is a question for anyone: Should there be ground between chassis and the psu or dac boards? Thanks all. Looking forward to starting my build. -freeman
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Old 6th November 2013, 02:20 AM   #564
tofurky is offline tofurky  United States
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still waiting here on the east coast also, should i be concerned?
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Old 6th November 2013, 02:46 AM   #565
fredlock is offline fredlock  United States
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Originally Posted by tofurky View Post
still waiting here on the east coast also, should i be concerned?
I think we should be more concern since we are in California and live close to Subbu.
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Old 6th November 2013, 02:58 PM   #566
Skiivari is offline Skiivari  Finland
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Join Date: Sep 2011
Could someone please send me the bom, or just tell me what type of transformer to get, what are the needed specs. I didn't get the bom since I registered for the gb later than everybody else and I could check if my local shop has the right kind of transformer. The other parts i'll get from the parts gb
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Old 6th November 2013, 03:02 PM   #567
wirewiggler is offline wirewiggler  United States
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Location: Bakersfield Ca
Subbu responded to a message from me, he explained he sent them out in batches. He mentioned in an earlier post he has been busy with work traveling. I can relate.

Bill
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Old 6th November 2013, 03:05 PM   #568
Ryssen is offline Ryssen  Sweden
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Join Date: Dec 2003
Location: Sweden--> Here
I haven´t got the boards in Sweden either,but I´m sure they will come.....(I hope)...
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Regards Åke
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Old 6th November 2013, 03:17 PM   #569
atupi is offline atupi  Romania
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I see on the schematic Q1,Q2 and Q3 (Q2 and Q3 seems paralleled). I believe this is an error and there is no Q3.
What is the secret of soldering Q2 as the case covers entire soldering pads and there is no acces with soldering iron ?
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Old 6th November 2013, 05:38 PM   #570
passive420 is offline passive420  United Kingdom
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Quote:
Originally Posted by atupi View Post
I see on the schematic Q1,Q2 and Q3 (Q2 and Q3 seems paralleled). I believe this is an error and there is no Q3.
What is the secret of soldering Q2 as the case covers entire soldering pads and there is no acces with soldering iron ?
they are difficult but do-able, at the very sides of the Q2 package you should see exposed contacts that run under the xo.

tin the pads and align the xo over them with flux and apply heat to one exposed contact by pressing the flat of the bit firmly against the side for a second or so. Check it has taken and the alignment and continue with the rest. Careful with overheating.

You can check continuity by C17 and L3 pads to the very side of the xo contacts - only two of the xo contact pads are used, is this correct?

Hope that's clear

Last edited by passive420; 6th November 2013 at 05:46 PM.
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