Slashdot Mirror
Soldering For Non-Solderers?
DanielMarkham asks: "A few months ago I bought a 4GB USB drive from jmtek Online. I really liked the drive -- heck, 4 GBs were awesome! But over time, using it in my tablet PC, the connectors started loosening up between the USB plug and the IC. Eventually, the part that plugs into the computer came loose from the rest of the drive. So, now I've got six-hundred bucks worth of useless plastic. I don't know anything about circuit board repair, so I'm in a bit of a fix. As I understand it, the 90-day return period has timed-out, and there's not much I can do in the way of a refund. But all of my data is still on there, I just need some way to re-connect the USB plug to the circuit board. I guess that would involve soldering? Do you guys have any idea how I could get the USB drive fixed without spending a lot of time or money?"
Look for Ham clubs, Robot clubs, heck, even your local LUG could have somebody competant to help you out.
Good Luck!
Stop the world; I need to get off.
You should just have someone solder it for you. It would probably cost like $50 or so to take it to a shop and have them resolder the traces. Seriously. Don't even think about trying it as your first job because you will likely end up getting too much solder everywhere and the part will become useless, and a repair all the more costly (if possible). Find some geeky friends that mod X-Boxen and have them look at it. I bet you know someone that would do it for a bag of grass or a night of drinking or something along those lines. Just don't try to do it yourself, especially if you have never soldered before in your life. Its like asking "I've never tried it before, but how do I rebuild my tranny?" Not really recommended without proper tools, knowledge and experience.
zosxavius photography
USBDrive 4GB Weatherproof
Professional USBDrive 4GB Weatherproof
It would appear that both devices come with a 1-year warranty, so once you get your data off, I would contact them and tell them that it broke. (Assuming that it wasn't negligence that caused it anyway)
Get that thing replaced man, $600? Jeez. I'd want that thing fixed.
There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
Find a VCR/TV repair shop in your area (yes, they do exist). I bet they'd do it for you either cheap or free.
DiscDividers tabbed plastic CD dividers: divider cards f
I guess that if you lived just down the road you could come over and I'd teach you how to rework the solder joints ... you MIGHT want to clue the rest of us into what part of the planet you currently occupy!
You can check the phone book for electronics repair, retail, or electronics repair, industrial. Another place that may well be prepared to do this sort of work is a local two-way radio repair shop . The industrial folks and the two-way radio shops might well be better prepared to repair your device, but you may have to pay quite a bit. Be sure you bring all the parts.
What ever you do, don't try liquid metal. I HATE cleaning up after someone tries using that stuff. Ugh.
Once repaired, you might also consider a careful application of epoxy to strengthen the bond between the connector and the board. That is, after all, why the connector came off ... solder is pretty much useless by itself when it comes to holding something in place.
Soldering, by itself, isn't all that difficult. It only requires the proper tools and practice ... though I don't believe you really want to get that deep into things.
You MIGHT find a ham radio operator that knows what to do, and has the tools to do so, but that's probably a stretch (in the past, ham radio operators were more technically oriented, today it's so much easier to buy the equipment rather than make it. Thus, fewer hams are equipped, much less experienced in micro miniature repair). And yes ... I'm a ham as well, I speak from my experiences.
If the wire just tacks onto the surface, expose about 1/8 inch of bare wire, tin it (that is, using the soldering iron, wet the wire thoroughly with solder) then press it onto the board with the soldering iron. Quickly press the wire in place with the end of a screwdriver and remove the iron. Hold the wire with the screwdriver tip for a few seconds until the solder hardens.
If the wire passes through a hole in the board, you need to clean the solder out of the hole. To do this, place the iron to the board and use a soldering wick (an absorbant copper mesh, probably available at Radio Shack) to soak up the excess solder. Then you can strip the insulation off the end of the wire (about 1/8 inch again), place the bare wire through the hole, apply solder and remove the iron. If the wire is stranded, you may want to twist the strands together a bit to keep them together. Trim off any excess wire sticking through the other side above the solder.
If you can't find soldering wick, you can heat the wire by placing the iron against it and gently poke the wire through the hole, melting the solder as you go. Finally, apply some solder to the board to secure the wire. This requires three hands and is recommended only as a last resort.
The thing you must be careful about is not overheating the board. If the iron is held in contact with it too long (more than a few seconds), other components may become unsoldered or the varnish may melt, producing nasty fumes, or the copper traces may separate from the board. If the last of these happens, you may be able to salvage it by replacing the failed traces with 30-gauge wire using techniques described in the first paragraph. This is unnecessary if you are careful though.
If you use rosin core or flux core solder, you should use a q-tip soaked in paint thinner to clean the newly soldered connection after it has cooled. This will prevent corrosion.
Finally, to keep this from happening again, it is best to secure the wire so that it does not flex near the solder joint, where it is brittle and prone to breaking. Nylon zip ties are good for this and should be placed around a structural component of your hardware and preferably not around the board itself.
If you don't want to risk ruining your good hardware right away, you may want to practice by soldering wires to an old token ring card or something.
As for the soldering iron, a small iron of less than 50 Watts is best for this kind of work. Do not use a soldering gun because they are bulkier and more difficult to control and certainly do not use the 300 watt model designed for copper roofing.
Good luck.
Unknown host pong.
I've used the soldering tip that came with my propane torch -- I can solder up to five circuit board traces at once with that baby! But you have to remember to turn off the flame before you point it at the circuit :-O
If all this should have a reason, we would be the last to know.
Your best bet as far as wiring goes is to cut apart an extra USB cable. The wires are color coded to correspond to pin numbers.
Referencing your orininal connector and getting pin numbers simply connect the following pins to wire colors:
1-red
2-white
3-green
4-black
(ignore the shielding on the USB cable or connect it to ground (pin 4))
Install Ubuntu in Android
Yeah, this is one of the most common problems with devices that have plugs, and you can usually fix it with soldering. Generally, your solder joints won't last as long as the original bad joints did in the first place, so this "repair" won't be particularly permanent unless you do something like mount the connector to the chassis and connect it to the PCB with flexible wires instead. Soldering is not too hard, but for something that costs $600, you might not want this to be your first attempt.
I did a laughably sloppy job of this with my MP3 player a year or so ago and posted the steps and pictures . You probably don't want to be this sloppy.
Subjects like this make me really miss Heathkit.
Most of you kids are too young to remember them as they were in their prime. They used to sell kits that allowed you to build almost anything electronic and you learned as you built. They had the very best documentation available anywhere for anything. Every manual started with a brief course in soldering. They also had some excellent training courses including.....soldering.
If this were the 1980's I would recommend that you purchase a kit from them. You would then learn to solder and be able to go on to fix your drive, and maybe go on to build one of their excellent amateur radio sets or TV's or robots.
Sigh
. Quit playing Monopoly with Bill. Switch to one of many non-Microsoft products today.
Well, soldering itself isn't too difficult to comprehend:
- don't be hung over, or have drank too much coffee. Your hands need to be steady.
- when working on small circuits, a magnifying glass is helpful. There's things called 'helping hands' which will hold the components to be soldered in the right position, and also have a positionable magnifying glass with a light.
- clean all oxidation off of the metal surfaces to be soldered, using light duty sandpaper, steel wool, or a chemical compound called "rosin". Make sure you use rosin acceptable for electronics, plumbing rosin is often acidic and will damage electronic components.
- use solder of appropriate guage to what you're working on. Probably you want really tiny solder.
- physically attach the two metal surfaces, with a vise or what have you. Make you you leave enough room to get the iron in, and still be able to see what's going on.
- clean the tip of the iron, heat it up, then apply a small amount of solder to the iron itself. This is known as 'tinning' the iron.
- apply the solder on one side of the metal surfaces, and put the soldering iron on the other. The idea here is that the metal surfaces have to be hot enough to keep the solder from 'balling up' and running off the board, or otherwise creating a 'cold solder joint'. it shouldn't take more than ten seconds from the tip you place the soldering iron on the metal joint to when the solder on the other side starts to melt. If it takes longer, use a higher power soldering iron
- don't use too much solder or too little. It's hard to explain this in words, just look at other soldering joint done by professionals and you should see what it looks like
- apply heat just long enough to completely melt and spread the solder around the joint. Leaving the iron on too long can overheat components.
- if you don't apply heat long enough, or if you bump the joint while its cooling, you may create acold solder joint. This will have a pitted or scaley appearance, sometimes greyish. You want something smooth and shiney.
One of the things I've learned though experience, is the importance of the proper heating power. Some places will tell you 'use a low wattage iron' to avoid overheating. Well, this is bullshit. If you use an iron that is too wimpy, like those cheap $5 radio shack ones, the joint isn't heated up quickly enough, but the heat has time travel away to the components while you're sitting there with the iron on the joint for 30 seconds wondering when the solder is going to melt. The best irons are the ones with adjustable settings and a trigger, a 'soldering gun'.
- remember when soldering that while solder provides some physical strength, in electronics that is not its main purpose. Any wires that are under strain should not depend entirely on solder to keep them together. Use some sort of strain relief when called for.
I hope this has been helpful.