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ES9023 / WM8804 S/PDIF "Subbu DAC V3" GB Interest

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Personally, I use a 2mm chisel bit for ALL my SMD work and have had no problems. If you use too fine a tip, it's very difficult to keep the tip tinned which means it's harder to get a thermal contact with the part.

So I would go for a B005360 bit - And don't forget the solder wick!
 
Just need to make sure the tip is clean and well tinned - I use a damp sponge and that course wire wool stuff.

Life just isn't complete without solder wick - I use 2 widths for SMD - 1.5mm and 2.5mm. When soldering something like the WM8804, I find the best method is to flood solder the pins, then wick off the excess, which should also get rid of any bridges. Be VERY careful not to let the wick "freeze" to the chip pins or pads - Just keep the solder molten and the wick moving.

You will almost certainly want some additional flux - I use a gel flux and apply it with a syringe - Use plenty because the flux in cored solder burns off quickly.

Good luck - Ken
 
Thank you.
Off topic: been de soldering trimming pot , and somehow ring on pcb around wiper is not visible any more.
I have checked continuity between wiper and adjacent pole and it is there (as on the rest of pots) and not sure is pcb damaged or continuity is there for a reason :)
Any ideas ?
P.S. Hate desoldering ...
 
I like the copper Chore Boy as it is a bit coarser an is well - copper :)
They are available at most grocery stores and I just stuff them in an old spray paint can top.
 

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Hi Ivan, Bit of a problem there - Is the PCB double sided? And which pad has lifted - Solder side or component side? If it's the component side pad thats lifted, you should be OK assuming the through plating is good. If it's the solder side, you will need to scrape and tin the trace and piece out with a short bit of wire.
Hope that makes sense.

Ken
 
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 :(
 
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 !
 

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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. :eek:

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