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Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1

Removing a 15 pin chip

What's the best way to remove a audio amp IC from a PCB that's 15 pins?


SparkChaser
Premium
join:2000-06-06
Downingtown, PA
kudos:4

1 recommendation

SMD or thru hole and do you want to save the chip?


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
said by SparkChaser:

SMD or thru hole and do you want to save the chip?

thru hole and nah not saving it


cowboyro
Premium
join:2000-10-11
Shelton, CT
reply to Subaru
Suck the solder and remove the chip?


SparkChaser
Premium
join:2000-06-06
Downingtown, PA
kudos:4

2 recommendations

reply to Subaru
If normal removal doesn't work SNIP and PULL. Cut the pins and remove one at a time. Then you'll probably have to clean out the hole.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
Hopefully it wont be hard I just never had one in this pin configuration before.


drjim
Premium,MVM
join:2000-06-13
Long Beach, CA
kudos:3

1 recommendation

reply to Subaru
I've done what SparkChaser suggests many times.
Clip the leads off at the IC body with a good pair of cutters, then heat the lead and pull it out.
One other thing I do to get nice clean holes, is to add a bit of solder to the now empty hole, and then wick it off with solder wick.
And then I clean both sides of the board with Isopropyl Alcohol.
--
One man's Magic is another man's Engineering.

nonymous
Premium
join:2003-09-08
Glendale, AZ
said by drjim:

One other thing I do to get nice clean holes, is to add a bit of solder to the now empty hole, and then wick it off with solder wick.

Gee that may have helped when I was repairing the washing machine board.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
reply to Subaru
I've done that before a little tricky at first.. on a board I did not care about I used a propane torch.. I kept it away enough where it did not overheat.. it was super easy to remove a cpu socket

dmoisan

join:2003-03-25
Salem, MA
reply to nonymous
If you can't suction old solder, melt new solder in the old joint. Then try the braid or the pump.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
My braid is almost gone.. Speaking of that which braid works best? I had the radio shack brand and it has mixed reviews, for me it does not start wicking unless I put some solder on it and use my 40W iron.


drjim
Premium,MVM
join:2000-06-13
Long Beach, CA
kudos:3

1 recommendation

"Solder Wick" brand from Mouser or DigiKey.


tschmidt
Premium,MVM
join:2000-11-12
Milford, NH
kudos:9
Reviews:
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said by drjim:

"Solder Wick" brand from Mouser or DigiKey.

Interesting - I didn't realize "Solder Wick" even had a competitor.

/tom


shdesigns
Powered By Infinite Improbabilty Drive
Premium
join:2000-12-01
Stone Mountain, GA
reply to Subaru
The RS one is probably OK, but probably sat on a shelf too long and is a bit tarnished.

I keep liquid flux when i use mine, it works much better.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
I never used liquid flux, not too long ago my late uncle had a whole can of paste flux and that stuff makes doing wires less of an hassle.
Hopefully by Tuesday I will have power back at least that's what the power company said..

I know the other way I did was use a torch but it was on a motherboard I no longer needed, I held the tip about 10 inches away and they came off smooth but might too risky for something that still works.
--
It's NOT Ni-kon It's NE-KON!




LG is NOT Lifes Good It's Lucky Goldstar!



shdesigns
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Stone Mountain, GA
Reviews:
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reply to Subaru
If it is a can of paste flux, it may have been for plumbing. That would be acid flux and would eat up thin traces.

I used it to clean my soldering iron tips. They soon eroded away.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
It's in a can I can't remember the brand


drjim
Premium,MVM
join:2000-06-13
Long Beach, CA
kudos:3
reply to Subaru
I've used the braid from coax, along with a bit of liquid flux, when I didn't have any "real" solder wick handy.
--
One man's Magic is another man's Engineering.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
Hmm so should I stop using this paste flux? I will have to get more braid when stuff is back and running right.


drjim
Premium,MVM
join:2000-06-13
Long Beach, CA
kudos:3
*I* wouldn't use it, and I've been known to try some pretty bizarre thinks in an emergency!

Radio Shack should have flux. Are they open yet in your area?

BTW....how'd you do when Sandy hit? I forgot you lived up there or I would have PM'd you about it.
--
One man's Magic is another man's Engineering.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1

1 edit
I don't have power at my apartment yet but I'm not allowed to use a generator at that place so I keep it at my family member's house and her power ended up going out so I ran it for 8 hours, I had internet and tv and lights... I got power back about 3 PM the next day. It was pretty bad I posted some pictures in the home improvement section of the site here, lots of snapped poles and trees down.

I will have to try radio shack.. not sure what they will charge for it however.

What about this?

»www.radioshack.com/product/index···=2062720

seems like they don't have the liquid in stores.
--
It's NOT Ni-kon It's NE-KON!




LG is NOT Lifes Good It's Lucky Goldstar!



Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
reply to Subaru
btw the stuff I have is kester flux in a blue can but I can't find any pictures of it online..


drjim
Premium,MVM
join:2000-06-13
Long Beach, CA
kudos:3
reply to Subaru
I've used this stuff before:

»www.radioshack.com/product/index···=2049774

Smells a little weird, but worked OK.
--
One man's Magic is another man's Engineering.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
So question if it's acid flux (not the RS one) it would say on the can, no? if it's not then it should be ok to use? Because I'm going to stop by the house I can't remember saying acid but I could be wrong I've only used it so far for connecting wire and not using it on a board yet.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
reply to Subaru
Click for full size
This is what I have


drjim
Premium,MVM
join:2000-06-13
Long Beach, CA
kudos:3
ZINC CHLORIDE

Do NOT use this stuff on electronics!
--
One man's Magic is another man's Engineering.


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
said by drjim:

ZINC CHLORIDE

Do NOT use this stuff on electronics!

Thanks for the heads up


Subaru
1-3-2-4
Premium
join:2001-05-31
Greenwich, CT
kudos:1
reply to Subaru
Click for full size
I have power back!

Don't think I will work on it tonight a little chilly in here