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Old 08 April 2007, 11:36   #41
Jope
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Hehe, that Agnus socket replacement pic reminds me of replacing the cracked buster socket in my A3000T.. :-D

I used the trusty paint stripper-rework station there too. There's really no other way to get sockets with that many pins off the circuit board. :-)
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Old 10 June 2007, 13:26   #42
Chain
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my another nice repair of Viper 520

http://chain.3dgrafika.cz/wrk/alcone/_viper520_oprava/


Card was dead if you switch on (jumper) fast ram, so ive replaced dram chips and it works, hell yeaah!

Hyunday chips are desoldered from 72pin simm -.) (due to unable to find same part number anywhere else)

man, im beginning to like that hotair rework
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Old 10 June 2007, 14:27   #43
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Anyone got any tips of how to de-solder something?

(In this case a simm socket from an A4000 motherboard without damaging the board)
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Old 10 June 2007, 14:50   #44
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Sold wick and a £20 (paint stripper) hot air gun...

(courtesy of our resident wizard... MERLIN )

i would recomend a small custom built nossel for the gun (i believe that a coke can or similar could be used / beaten to shape *this was mentioned too ) )

However a small solder re-work station would do wonders for a small investment. ebay prices have gone up recently so have a shop.. you should be able to get a decent one under £70.

If however you are lifting components i would recomend a copper rod or similar to place onto them and absorb the heat generated by the hot air desoldering unit.
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Old 10 June 2007, 15:03   #45
Chain
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its on amiga.serveftp.net, but thats now down (hope its temporary prob)

BUT here is mirror of simm desoldering page just for ya
http://chain.3dgrafika.cz/temp/amiga...lace_simm_.htm

(Property of A.Hoffmann, hope he doesnt mind for mirror it)


and be cautious, coz soldering with hotair in these hot days (32C here) needs a lot of cold beer!

Last edited by Chain; 10 June 2007 at 15:10.
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Old 10 June 2007, 15:12   #46
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@Chain

32c Holy Shit!!!!! i start wishing oblivion to take me after 27c.....
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Old 10 June 2007, 15:29   #47
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Thanks chain

That's exactly what I needed.. lol

Same motherboard that I have too xD
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Old 10 June 2007, 17:13   #48
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Quote:
Originally Posted by Zetr0
However a small solder re-work station would do wonders for a small investment. ebay prices have gone up recently so have a shop.. you should be able to get a decent one under £70.
Lichfield Electronics (I believe owned by Oliver Hannaford-day of CDTV.org.uk) has decent prices, £55 for the cheapest model http://www.lichfieldelectronics.co.u...d39ec734c2aa99 though, he doesn't seem to stock solder paste, flux pens, or indeed any surface mount components, which is something of an oversight in my view.

Farnell and RS will supply solder and flux, along with components, however their prices are not the best for home constructors, http://www.futurlec.com/ do cheap components (along with a reasonably priced board manufacturing service) but no solder or flux.
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Old 08 October 2007, 14:45   #49
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Originally Posted by BinoX View Post
Thanks chain

That's exactly what I needed.. lol

Same motherboard that I have too xD
and here is how looks mine...
http://chain.3dgrafika.cz/temp/A4000_/a4000_simms.jpg
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Old 12 October 2007, 00:16   #50
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Guys check this chaps work, he does some articles on Surface mount soldering too...


http://amiga.serveftp.net/hardware_repair.html
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Old 19 October 2007, 22:58   #51
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I did this to a GeForce 4 Ti4600 many moons ago, it was a bad ass card



I had to change ALL the caps, but I was most pleased with the one I stuck on the back, I thought I was being well clever
I was given the card and it only cost me about £2 to put right I really did think that was good.
If I remember it ended up on the back because the board was damaged in some way...
The card ran for about 2 more years then died due to RAM for no reason

EDIT : I knew there was a reason I was looking in here...
Does anyone know where I can get a solder pump, not those crappy spring loaded solder suckers, I used to have this thing with a rubber ball that basically sucked it up as you pumped it, but I have not seen one for years, eBay shows all those crappy ones I don't want.

I REALLY badly need to learn how to solder properly, a rework station looks nice are they easy to use?

Last edited by DrF; 19 October 2007 at 23:05.
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Old 19 October 2007, 23:29   #52
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Quote:
Originally Posted by DrF View Post
I REALLY badly need to learn how to solder properly, a rework station looks nice are they easy to use?
everything is difficult on first try, but you wil LOVE IT after few minutes, trust me
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Old 19 October 2007, 23:41   #53
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Well I have ordered some essentials for now solder, desoldering wick, flux, soldering paste, super pointy tweezers. Gonna get a new iron, and I want to get a Willem programmer thingy, theres some many things I need to learn to do, but I never have the tools

I will keep looking for a hot air rework station, that site with the SMD tips makes it look a little TOO easy to use.
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Old 11 January 2008, 18:47   #54
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This video may be of some help to people, I found it quite good, how to do SMD soldering with not so expensive normal soldering gear, and from the video the methods look like they work quite well.

http://www.curiousinventor.com/guide..._Soldering/101

PS : Double post 'cause this topic has been dead awhile and it would be nice to see how everyone got on
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Old 11 January 2008, 19:28   #55
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After all these years I still cant solder for toffee, I made up a scart lead for my arati jaguar last night and I made a right mess, badly burning myself in the process.

Worst bit was, I realised half way through that the connectors I was using either end were intended to be solderless
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Old 11 January 2008, 19:34   #56
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Quote:
Originally Posted by Mick_AKA View Post
After all these years I still cant solder for toffee, I made up a scart lead for my arati jaguar last night and I made a right mess, badly burning myself in the process.

Worst bit was, I realised half way through that the connectors I was using either end were intended to be solderless
Sounds like me
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Old 12 January 2008, 15:00   #57
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This video may be of some help to people, I found it quite good, how to do SMD soldering with not so expensive normal soldering gear, and from the video the methods look like they work quite well.
I saw that too on hackaday.. It's a good video for someone venturing to the SMD world.

However you must learn how to solder through hole stuff and wires into connectors before even considering SMT work.. Without soldering experience, doing SMD will just result in a nervous breakdown and a ruined PCB.
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Old 19 January 2008, 03:13   #58
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Lightbulb How to dessolder SMD caps or other 2-lead things...

If you don't have enough talent ($$$$) to buy/rent/borrow/steal a SMD rework station, and have to dessolder a capacitor (or a resistor, or whatever), just use two solder irons, one in each lead of the device.

Just a tip...


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Old 25 February 2008, 13:06   #59
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I have been working in the electronics industry as an electronics assembler for over 25 years. In the upcoming RetroGeek Computers episodes I will share what I have learned through the years. I will record the first of the three-part series this week. Then it will be coverted to a Video-MPG and posted in the Downloads/Videos area of the RetroGeek Computers website. So stay tuned.
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Old 25 February 2008, 13:20   #60
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heres a great place to start learning soldering technique

http://www.curiousinventor.com/guides/How_To_Solder

from through hole to SMD its great, helped me no - end...

dont forget youTube as well just type SMD soldering or de-soldering
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