Re: soldering tutorial, was: Re: [Shr-User] uSD hosed, on every unstable.

2010-10-15 Thread Al Johnson
On Friday 15 October 2010, Alfa21 wrote:
> 2010-10...@15:58 jeremy jozwik
> 
> > yah thats what i was wondering, frying components. but it is surely a
> > common technique, this is the first ive seen with a hot plate. most
> > use a hot air gun.
> 
> hot air is used to unsolder components for replacement.
> hot plate imho is fake

More coverage of various techniques here, including details of the hotplate 
method. It's the wrong method for reattaching a USB connector and a resistor.
http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=59

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Re: soldering tutorial, was: Re: [Shr-User] uSD hosed, on every unstable.

2010-10-15 Thread Alfa21
2010-10...@15:58 jeremy jozwik

> yah thats what i was wondering, frying components. but it is surely a
> common technique, this is the first ive seen with a hot plate. most
> use a hot air gun.

hot air is used to unsolder components for replacement.
hot plate imho is fake
if you want to do a clean and standard work follow this video about 0402 size:
http://www.youtube.com/watch?v=66GV4OuShzI

it's almost the same I tried to explain before, but here it is more clear and 
complete.

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Re: soldering tutorial, was: Re: [Shr-User] uSD hosed, on every unstable.

2010-10-14 Thread jeremy jozwik
On Thu, Oct 14, 2010 at 12:21 AM, Alfa21  wrote:
> no, never seen that method and I believe it's a fake because I think, yes, 
> the components are mechanically in place... but surely all fried! x_x
>
> btw, what about two sided boards?? XD
>
> imho you should do a try, first
> it's difficult but not impossible!

yah thats what i was wondering, frying components. but it is surely a
common technique, this is the first ive seen with a hot plate. most
use a hot air gun.

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Re: soldering tutorial, was: Re: [Shr-User] uSD hosed, on every unstable.

2010-10-14 Thread Alfa21
2010-10...@16:13 jeremy jozwik

> shit... i should just get some of this!
> FFWD to 9 min
> http://www.youtube.com/watch?v=Uov0SPHKcnk

no, never seen that method and I believe it's a fake because I think, yes, the 
components are mechanically in place... but surely all fried! x_x

btw, what about two sided boards?? XD

> thats a great link. now i keep going back and forth between buy a new
> phone or fix my beloved moko

imho you should do a try, first
it's difficult but not impossible!
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Re: soldering tutorial, was: Re: [Shr-User] uSD hosed, on every unstable.

2010-10-13 Thread jeremy jozwik
On Wed, Oct 13, 2010 at 3:29 PM, Alfa21  wrote:
> ooh sorry!
> I forgot an important point:
>> 6) put the resistor in place and keep it _gently_ pushing down with a small 
>> tool, like the point of a pin or similar (gently, otherwise you make it jump 
>> away!)
> 7-) put some flux on the sides of your resistor
>> 7) take your iron and pick up some but _little_ fresh alloy on the tip and 
>> then melt it on the first side of the resistor

shit... i should just get some of this!
FFWD to 9 min
http://www.youtube.com/watch?v=Uov0SPHKcnk

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Re: soldering tutorial, was: Re: [Shr-User] uSD hosed, on every unstable.

2010-10-13 Thread Alfa21
ooh sorry!
I forgot an important point:

> 6) put the resistor in place and keep it _gently_ pushing down with a small 
> tool, like the point of a pin or similar (gently, otherwise you make it jump 
> away!)


7-) put some flux on the sides of your resistor

> 7) take your iron and pick up some but _little_ fresh alloy on the tip and 
> then melt it on the first side of the resistor


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soldering tutorial, was: Re: [Shr-User] uSD hosed, on every unstable.

2010-10-13 Thread Alfa21

> make model micro soldering tutorials? i would really really like to
> fix this if i can.  

I think the size should be the same of the one needed for the buzz fix...
about soldering eee... good luck! :P
I made my buzz fix and it was a pain in the a**hole!

[0) check your pcb and verify you still have the traces where you'll put the 
new resistor because maybe you ripped the metal out]

1) remove the board from all the plastic case
2) firmly fix it to a solid table with an adhesive tape
3) do not drink alcohol and keep calm ;)
4) use the sharpest newer soldering tool, 25W-30W
5) put a _little_ of alloy on the little squares of the pcb
6) put the resistor in place and keep it _gently_ pushing down with a small 
tool, like the point of a pin or similar (gently, otherwise you make it jump 
away!)
7) take your iron and pick up some but _little_ fresh alloy on the tip and then 
melt it on the first side of the resistor
8) do the other side of the resistor
9) verify that your resistor is firmly in place and you haven't leaked the 
alloy around and check any short-circuit

the size is really tiny, so good luck and don't panic!
you can put your resistor in any direction, it hasn't +/- polarity.

be quick with the iron on your components otherwise you'll fry them!
no more than 2-3 sec.
you can cool down the components and do another try little later.

I suggest you to use the eutectic alloy because it's easier to use on this hard 
size

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