ES9023 / WM8804 S/PDIF "Subbu DAC V3" GB Interest - Page 54

houghtkj · 22nd January 2013, 01:17 PM

OK - Good luck.

BTW - Could you be soldering a bit to hot? I try to do most work at 330C. Just a thought...

Ken

voxxonline · 22nd January 2013, 01:30 PM

hm... 25 w soldering iron. not sure about the temperature

syklab · 22nd January 2013, 01:33 PM

Quote:

Originally Posted by voxxonline

Dear experts

Which bit to buy for a Subbu dac soldering works?
I am using xs25 iron from antex.
Would you please advice :
List of bits

Ivan

You should get the 5060 or 5160, the sharp tip would not give you enough metal to reach the melting point fast enough.

voxxonline · 22nd January 2013, 01:42 PM

Here is a picture of part of pcb.

bcmbob · 22nd January 2013, 01:53 PM

That's hard to see exactly what's happening there, but the darkness/dullness of the other solder points suggests you may not be using the best solder. Are you using liquid or paste flux in your work? Is there still copper under the grey on those open pads?

voxxonline · 22nd January 2013, 02:00 PM

I must admit I stopped all soldering works because of this BAD solder. I ll get suggested rosin 37/63 solder and continue.
I do flux.
There is a thick copper pad in place , sort of copper bridge from wiper to the right pad.
I should listen to advise and buy good solder right away

bcmbob · 02:18 PM

You can use rubbing alcohol or fingernail polish remover with an old toothbrush to clean things up before your next attempt. The investment in a good liquid flux used in addition to the flux that may be in the solder is well worth the cost. It cleans up easily as suggested above.

Mine aren't perfect but the end result should be closer to shiny bright.

I like this shape for scraping pads when necessary.

Radio Shack has a 62/36/2 silver solder that is decent and doesn't cost much.

Good Luck !

voxxonline · 22nd January 2013, 02:16 PM

I am using this flux: LACO
What would be the best size of solder for smd ?

bcmbob · 02:33 PM

ChipQuick in the syringe is my favorite. Other brands are available but the syringe is very useful. My second choice is liquid with a brush.

Whatever you use don't be afraid to use more rather than less. It all cleans up well. My work looks horrible till I do the final clean up with alcohol/toothbrush.

BTW, Dow Bathroom Cleaner (Scrubbing Bubbles) works great to remove any flux residue after the alcohol pass.

syklab · 22nd January 2013, 02:42 PM

Kester-951 is also good and no cleaning needed.

22nd January 2013, 01:30 PM	#532
voxxonline diyAudio Member Join Date: Aug 2012 Location: Bexleyheath, Kent	hm... 25 w soldering iron. not sure about the temperature __________________ </Addiction> My project map / slowing down for summer

22nd January 2013, 01:53 PM	#535
bcmbob diyAudio Member Join Date: Dec 2009 Location: Bay City, Michigan	That's hard to see exactly what's happening there, but the darkness/dullness of the other solder points suggests you may not be using the best solder. Are you using liquid or paste flux in your work? Is there still copper under the grey on those open pads? __________________ Bob M. "Arrange Whatever Pieces Come Your Way."

22nd January 2013, 02:00 PM	#536
voxxonline diyAudio Member Join Date: Aug 2012 Location: Bexleyheath, Kent	I must admit I stopped all soldering works because of this BAD solder. I ll get suggested rosin 37/63 solder and continue. I do flux. There is a thick copper pad in place , sort of copper bridge from wiper to the right pad. I should listen to advise and buy good solder right away __________________ </Addiction> My project map / slowing down for summer

22nd January 2013, 02:16 PM	#538
voxxonline diyAudio Member Join Date: Aug 2012 Location: Bexleyheath, Kent	I am using this flux: LACO What would be the best size of solder for smd ? __________________ </Addiction> My project map / slowing down for summer

22nd January 2013, 02:23 PM	#539
bcmbob diyAudio Member Join Date: Dec 2009 Location: Bay City, Michigan	ChipQuick in the syringe is my favorite. Other brands are available but the syringe is very useful. My second choice is liquid with a brush. Whatever you use don't be afraid to use more rather than less. It all cleans up well. My work looks horrible till I do the final clean up with alcohol/toothbrush. BTW, Dow Bathroom Cleaner (Scrubbing Bubbles) works great to remove any flux residue after the alcohol pass. __________________ Bob M. "Arrange Whatever Pieces Come Your Way." Last edited by bcmbob; 22nd January 2013 at 02:33 PM.


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22nd January 2013, 01:17 PM	#531
houghtkj diyAudio Member Join Date: Apr 2010 Location: Lancashire, UK	OK - Good luck. BTW - Could you be soldering a bit to hot? I try to do most work at 330C. Just a thought... Ken

22nd January 2013, 02:42 PM	#540
syklab diyAudio Member Join Date: Jul 2009 Location: Hong Kong	Kester-951 is also good and no cleaning needed.

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