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Repairing Motherboards (anyone know how)
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Originally Posted by techno t 
Chinese designs are a PAIN!!!!!!!1 cheap build quality and poor solder joints being made. And now with lead free coming in the poor solder quality is really affecting mainboard connections. BGA's are failing at a rate of knots and the whole thermal problems are getting worse as the lead free joints are more brittle then tin/lead soldering.
Damn cheap builds and lead free soldering really dont mix, I had a laptop in the other day, intermittant as hell. Seemed more stable once warm, struck as a poor solder joint somewhere, luckily saw that it had a few memory issues once it did boot so resoldered the lead free DIMM skts with normal tin/lead solder. Fixed it first timehowever not all fixes are as easy as that, and lead free is making things a whole hell of a lot harder
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Here's what I do, I will blend 60/40 with the lead free*, then cover all of it with flux, then flow the iron across it. Also verifyling that I didn't short close connections... If there is too much, I will wick off the excess, then flow again. Not leaving the iron in one spot too long.
That will also allow a lower melting point vs Lead Free alone. Too bad Radio Shack still haven't gotten good irons and tips for the lead-free work yet.
lead free is pretymuch the only one you can\ buy in the uk now - lead/tin is illegal
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Join Date: Feb 2008
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It's illegal to use tin/lead on LEAD FREE boards, but you can still use tin/lead on tin/lead boards. And really if you have a nasty joint problem, a mixture of tin/lead like kegger's says up there is a brilliant solution.
Because really, who's gonna check the solder if they have a working system
lol
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Because really, who's gonna check the solder if they have a working system
lol*
Tearing a tag off a mattress is also illegal in the US. It would be a shame to be in prison bunking with a mass murderer and you in for tearing a content tag off a mattress, or using Pb/Sn solder. Poor Brits!!! and no 60/40 solder
But i think the US law as written was intended for the manufacturing process, not end user. Haven't read the UK law, much less knew of it.
Because they use Tons and Tons of LEAD which pollutes rivers and streams. And because it is still available in stores and hobby shops.
But i think the US law as written was intended for the manufacturing process, not end user. Haven't read the UK law, much less knew of it.
Because they use Tons and Tons of LEAD which pollutes rivers and streams. And because it is still available in stores and hobby shops.
is the stupid WEEE thing baught up by the EU
you cant put electrical material of any sort in the trash now either
you cant put electrical material of any sort in the trash now either
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Here in good-old Croatia there is no such ban. If there was one, then it would make no sense, since every fisherman, regardless of the tools they use, all use one common material for weight. Led.
It would be real prudent.. baning led in electronics, but saying OK to the tonnes and tonnes of led being soaked (and dumped) into the sea. And we eat fish caught by the same nets that have led weights...
It would be real prudent.. baning led in electronics, but saying OK to the tonnes and tonnes of led being soaked (and dumped) into the sea. And we eat fish caught by the same nets that have led weights...
Last edited by Chaky; Mar 8th, 2008 at 8:59 pm.
I say what I see. If you find my words offensive, then you find my reality offensive.
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LEDs for fishing, new idea that
anyway all joking aside my point I make regularly is that it came from the earth and so its only going back where it came from
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anyway all joking aside my point I make regularly is that it came from the earth and so its only going back where it came from
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Hmmm unless its a capacitor or a pretty big resistor or the BIOS thats the problem, there is almost no chance of repair. Most modern motherboards are printed on 3-4 layers, so fixing something via solder is pretty much out of the question.
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Plus you have to weigh up the cost of a new board versus the cost of repair. Boards cost from as little as £20 nowadays for a basic board, it's that sort of cost that drives companies to repair or not to repair.
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In an attempt to return this thread to it's original subject...
"Repairing Motherboards (anyone know how)"
I'll just pose this question: Is there anyone that would like to share their method for troubleshooting a dead motherboard? I know a thorough visual inspection is important, and I know how to test for bad capacitors, but other than that, I'm pretty much lost.
Thanks!
"Repairing Motherboards (anyone know how)"
I'll just pose this question: Is there anyone that would like to share their method for troubleshooting a dead motherboard? I know a thorough visual inspection is important, and I know how to test for bad capacitors, but other than that, I'm pretty much lost.
Thanks!
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