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#221 |
Registered User
Join Date: Sep 2007
Location: Stockholm
Posts: 4,381
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Some people use a syringe with wide throat to suck out solder
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#222 |
Registered User
Join Date: Feb 2012
Location: #DrainTheSwamp
Posts: 4,545
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a thin needle of a sewing kit - maybe attached to the iron - or from the reverse side.
but in most cases, alot of flux does help alot. a little blob of solder onto the hole, to have better contact with the remaining stuff inside. Last edited by emufan; 08 August 2016 at 17:31. |
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#223 |
Registered User
Join Date: Mar 2013
Location: Oslo/Norway
Posts: 265
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You need it to be molten to get it out, and that is my problem.
I will try put the needle trick, and see if that helps. |
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#224 |
Registered User
Join Date: Sep 2007
Location: Stockholm
Posts: 4,381
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I use a gel-based flux called Löthonig. Since it's a gel, it stays put and doesn't quickly evaporate as more fluid flux. Put a blob on the solder point and warm it up. Since the ground plane will absorb a lot of heat, you may need to go above 400°.
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#225 |
Registered User
Join Date: Mar 2013
Location: Oslo/Norway
Posts: 265
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Thanks for tip. Found 1 seller at ebay, so will try with hotter temperatures and if that doesn't work, I'll get the Löthonig.
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#226 |
Registered User
Join Date: Mar 2013
Location: Oslo/Norway
Posts: 265
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Well I managed to get the solder off somehow it was a huge struggle to do so.
So now all my ram can be set securely in place. The only downer is that it refuses to boot with more than 1 of the simms in place(in addition to the soldered one) no matter how many jumpers I try to change. |
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#227 |
CaptainM68K-SPS France
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i use a flux pen, that i rub on the solder. With my thermo-controled Station, i melt easily the solder, and suck it up with my pump
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#228 |
Registered User
Join Date: Mar 2013
Location: Oslo/Norway
Posts: 265
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I tried something similar, but it didn't work.
I turned up the temperature, and used a needle the get trough the solder. After quite a bit of hassle I succeeded, and after that soldering on the memory socket was relatively straight forward. |
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#229 |
Tech Guru
Join Date: Dec 2015
Location: Oxnard, CA
Posts: 189
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A good brand name iron and the proper tip is key! Do yourself a favor and get a Weller or Hakko station. I prefer the Weller with ET series tips. They are not a lot of money and are available in all types of sizes and configurations for any task you would need.
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#230 |
Registered User
Join Date: May 2001
Location: ?
Posts: 19,665
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My life changed when I got a Weller.
I got the cheapest one that has temp regulation, WLC-100. ![]() I also now got used to screwdriver tips, and actually I am always using the really thick one that comes with the iron. I bought finer tips for future adventures into precision/smd As for desoldering, I got a plastic cheap pump. Got really used to it. Never used wick but it could help sometimes with stubborn solder (and to reduce temp exposure of a PCB) I cannot recommend highly enough all the advice given in this video blog: [ Show youtube player ] |
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#231 |
Registered User
Join Date: Mar 2013
Location: Oslo/Norway
Posts: 265
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Already have a Weller. It's a WECP-20 so it's an older type, but still functions good.
By the way the EEVblog guy have a review of the ZD-987, and I agree with his conclusion that it may not be the best built device in the world, but does what it says it will do. For any who de a lot of trough hole desoldering it is a good tool to have considering it isn't too expensive. I used this to remove 4x 64 pin ram sockets, and only 5-6 was difficult, and of those only 2 was really hard. It might be I should have used more heat, as all trouble spots was on the end of the ram sockets, or some of the solder had gone bad. I don't know. At least got one of them up and running again. Last edited by Viserion; 17 August 2016 at 23:32. |
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#232 |
-
Join Date: Jul 2003
Location: Helsinki / Finland
Age: 44
Posts: 9,964
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#233 |
Registered User
Join Date: Mar 2013
Location: Oslo/Norway
Posts: 265
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I was just listing a few possible reasons out of the top of my head.
I was thinking of solder cracking, but that may be more of a BGA problem than a trough hole one. Most likeley as you said ground, or something sucking up the heat. |
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#234 |
Posts: n/a
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Hi everyone...i am a new user here. As per my knowledge The hardest part about soldering is learning how to hold 3-4 things with two hands. The Solder, the Soldering Iron and the wire and the thing you are soldering.
The second hardest part is knowing how much solder to use and how long to leave the soldering iron in contact with the thing you are soldering. I always used too little solder and took the soldering iron away too soon as I was frightened of breaking things.Third hardest part, good tools. Cheap crap soldering irons with tips the size of bournmouth are useless. The soldering iron tip should go to a pencil type point, ideally be temperature controlled and be the right weight. printed circuit board assembly company Last edited by RockyFath; 24 January 2017 at 21:56. |
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#235 |
Banned
Join Date: Sep 2016
Location: UK
Posts: 2,917
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For soldering i strongly recommend watching "Louis Rossmann" on YouTube.
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#236 | |
Registered User
Join Date: May 2001
Location: ?
Posts: 19,665
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Quote:
I got one of those "helping hands" things and I really love it. No more burned fingers ![]() Also they look like a funny robot ![]() |
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#237 |
Banned
Join Date: Sep 2016
Location: UK
Posts: 2,917
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My experience of soldering is that if you are trying to hold multiple things you are doing it wrong
Sent from my iPhone using Tapatalk |
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#238 |
Registered User
Join Date: May 2006
Location: UK
Posts: 42
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OK, newb q here.
What does the flux % in different solders mean, is it just like it sounds, the % of flux in the solder? In the EEVblog tutorial that Akira linked (thankyou) he recommends 63/37 with multicore flux, he used 5 core flux, but couldn't find any of that stuff on ebay or amazon, esp at the thinner diameters EEV guy recommends. So I just went for one with "Rosin Core Flux 1.2%" but saw others at 1.8% and 2%. |
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#239 |
Registered User
Join Date: Mar 2016
Location: Dublin
Posts: 31
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I got this stuff recently - works great. Pretty sure I paid a bit less for it at the time though.. http://ie.farnell.com/multicore-loct...250g/dp/419308
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#240 |
0ld0r Git
Join Date: Mar 2009
Location: Cornwall, UK
Posts: 1,729
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