HELP!! There's no way I can solder this PCM chip on my Alien
Jan 15, 2008 at 4:12 AM Thread Starter Post #1 of 21

pinkfloyd4ever

500+ Head-Fier
Joined
Jan 19, 2007
Posts
962
Likes
167
Location
St. Louis, MO, USA
ok, so I just got my Alien kit from Jeff today. I asked him to solder my PCM chip, but when I opened the envelope it wasn't. I'm sure it was an honest mistake, cause I've never seen anything but positive feedback on him, but anyway, I'm afraid I'd toast it if I tried to solder it. My hands are SO shaky and it's gonna be interesting soldering just the smt caps, resistors, and the other ICs. What should I do?
 
Jan 15, 2008 at 4:30 AM Post #2 of 21

bhostinsky

New Head-Fier
Joined
Jan 4, 2007
Posts
27
Likes
0
I've been very weary about the alien dac as well. I came across this site that has some good instructions for SMD soldering. Hope this helps.

SparkFun Electronics
 
Jan 16, 2008 at 8:03 PM Post #3 of 21

Hubbard0

New Head-Fier
Joined
Dec 6, 2007
Posts
35
Likes
8
I attempted to do my own and ended up with a blob of solder on each side of the chip. I went out and bought soldering braid with the intention of getting the chip off and trying again. What ended up happening is that braid pulled off all the bridges I had made and left me with a perfect connection on all leads. So that's an idea if you're up to it.
 
Jan 16, 2008 at 10:14 PM Post #4 of 21

MASantos

Headphoneus Supremus
Joined
Dec 21, 2004
Posts
2,436
Likes
38
Quote:

Originally Posted by Hubbard0 /img/forum/go_quote.gif
I attempted to do my own and ended up with a blob of solder on each side of the chip. I went out and bought soldering braid with the intention of getting the chip off and trying again. What ended up happening is that braid pulled off all the bridges I had made and left me with a perfect connection on all leads. So that's an idea if you're up to it.


that's how it's done when you don't have big expensive soldering equipment!

Take it easy the first time and be pacient with that IC
 
Jan 16, 2008 at 11:29 PM Post #5 of 21

cfcubed

1000+ Head-Fier
Joined
May 1, 2007
Posts
1,174
Likes
15
First thing is contacting Jeff about it I guess & see if something can be worked out...

I'm not a fan of SMD soldering either, but I did run across this index of pix & very good vids on doing it.

Good luck.
 
Jan 17, 2008 at 1:19 AM Post #6 of 21

04BluMach

100+ Head-Fier
Joined
Apr 30, 2005
Posts
143
Likes
0
Quote:

Originally Posted by cfcubed /img/forum/go_quote.gif
First thing is contacting Jeff about it I guess & see if something can be worked out...
Good luck.



Definitely agree that you should first try contacting Jeff.... Try to arrange a return of your kit with a replacement that has the SMD's premounted.

If you are reasonable with him - let him know you understand it may take a little extra delivery time for the return....
I would imagine he will try to take care of you. Jeff is a great guy. He wants to keep his customers happy!

If that doesn't work out.... Send me a PM. I'll solder it up for you...
wink.gif
 
Jan 17, 2008 at 1:47 AM Post #7 of 21

Seaside

500+ Head-Fier
Joined
Aug 16, 2005
Posts
860
Likes
11
It takes little time and experience to solder such a small thing in line on position. Do not rush, take your time, and use flux. Then you will able to solder it without any problem. If you got blob, use desoldering braid to suck excessive solders out.

I heard Jeff is nice guy, but i still am not getting responses for my two PMs sent to him asking for PCBs. He must be very busy in these days, i think.
 
Jan 17, 2008 at 8:52 PM Post #10 of 21

04BluMach

100+ Head-Fier
Joined
Apr 30, 2005
Posts
143
Likes
0
Quote:

Originally Posted by jsmithepa /img/forum/go_quote.gif
Why do u buy kits when u are unable to solder?


The poster can solder. However, the subject is on a high density PCM chip for the Alien PCB that is a Surface Mount Device SMD package. Jeff (Glassjar) offers the ALIEN kit with the option of having the SMD's pre-mounted (soldered).

Not everyone has the skills, expertise, and/or tools available to tackle soldering a PCM DAC SMD chip on a PCB!
frown.gif

Nor would they want to take the chance of damaging an expensive DAC chip or PCB attempting something they don't have the experience to accomplish. That is why Jeff offers the pre-mount option.

Suggest you understand what you are posting about and watch how you word it also. Your remark came across as very arrogant! And really didn't offer value to the thread in question!!!

Remember we are all doing this for fun! So chill out and........

ENJOY THE MUSIC
 
Jan 18, 2008 at 12:50 AM Post #11 of 21

noveltone

New Head-Fier
Joined
Dec 30, 2007
Posts
21
Likes
0
04BluMach, well said! Sometimes it just takes some reading and dumb luck to get the confidence necessary. Lots of people I've met are intimidated by even large-scale soldering, so I think our friend pinkfloyd4ever is over the big hump. I've gotten lots of transistors and ICs hotter than I'd like and they still test fine when I get nervous and pull them out to see if I've ruined them. Good luck.
 
Jan 18, 2008 at 12:51 AM Post #12 of 21

regal

Headphoneus Supremus
Joined
May 27, 2006
Posts
3,645
Likes
18
Quote:

Originally Posted by jsmithepa /img/forum/go_quote.gif
Why do u buy kits when u are unable to solder?


I have been soldering for 20 years and stare into space after looking at my new EZDAC PCB which requires the same SMD package
 
Jan 18, 2008 at 2:27 AM Post #13 of 21

pinkfloyd4ever

500+ Head-Fier
Joined
Jan 19, 2007
Posts
962
Likes
167
Location
St. Louis, MO, USA
Quote:

Originally Posted by 04BluMach /img/forum/go_quote.gif
The poster can solder. However, the subject is on a high density PCM chip for the Alien PCB that is a Surface Mount Device SMD package. Jeff (Glassjar) offers the ALIEN kit with the option of having the SMD's pre-mounted (soldered).

Not everyone has the skills, expertise, and/or tools available to tackle soldering a PCM DAC SMD chip on a PCB!
frown.gif

Nor would they want to take the chance of damaging an expensive DAC chip or PCB attempting something they don't have the experience to accomplish. That is why Jeff offers the pre-mount option.

Suggest you understand what you are posting about and watch how you word it also. Your remark came across as very arrogant! And really didn't offer value to the thread in question!!!

Remember we are all doing this for fun! So chill out and........

ENJOY THE MUSIC



my thoughts exactly...


anyhooters, I emailed Jeff and it's all taken care of. I don't know why I didn't just do that first before whining on here, but what the hell, we've got a nice compilation of soldering tutorials now!
wink.gif
 
Jan 18, 2008 at 11:00 PM Post #15 of 21

beerguy0

Headphoneus Supremus
Joined
Apr 5, 2004
Posts
2,413
Likes
25
Quote:

Originally Posted by threepointone /img/forum/go_quote.gif
Most amazing video on SMT soldering I've ever seen (this guy has all the pro tools to magnify it and all--you can see EVERYTHING). It sounds as if he's done some of this stuff professionally too, so he also lists some less well-known methods in the video.

Curious Inventor - Guides : Surface Mount Soldering



Absolutely the best SMD soldering demo I've seen. I do this for a living, and have worked with every type of device he shows. (I also regularly work with 0402 Rs and Cs). I've used the drag method he shows, as soldering a 208 QFP pin by pin is incredibly tedious. I've had enough practice at drag soldering that I rarely get any solder bridges, but it does take some time to learn. This guy definitely knows his stuff. His advice on iron tips is dead on as well. The tiny conical tips are pretty much useless, IME.

One thing I would suggest - for desoldering SMD parts, get the small solder wick. It works much better than the big stuff he uses in the demo.

The proto board he shows at the end is new to me - that looks like it would be useful for evaluating new parts, or doing quick engineering breadboards.
 

Users who are viewing this thread

Top