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Old 27-06-09, 01:43 PM
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Rastalovich Rastalovich is offline
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Warping mobos

Got a mobo that I *think* is pretty warped, and just so happens is a bit problematic. What is it that causes this exactly ? Is it merely a heat differential surface to underneath ?

Gonna read up on the factors on this, also the "oven bake" approach to fixing whatever solder issues it might have.

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Old 27-06-09, 02:27 PM
noobieocer noobieocer is offline
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wieght of the hsf? maybe a water block witout backplate?

i wouldnt oven it, theres components both sides so either side sodler melts hen you have components dropping off. lol
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Old 27-06-09, 02:50 PM
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Back plates make no dif to warping in my experience.

Does it have anything bolted to it Rasta as that is usualy the cause.
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Old 27-06-09, 04:03 PM
rapidman17 rapidman17 is offline
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could be that you havent got all the motherboard spacers in and is casuing undue stress in one area.. ?
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Old 27-06-09, 04:29 PM
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Nah, there's no skimping on posts or anything, nor any bolted plates or braces.

And tbh, it could be clutching at straws, it just seems weird to me to look at the mobo on the desk and have such a curve to it. Having said that, many are slightly warped ootb.

I may look at using a hot-air torch in work as an alt to the oven thing.
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Old 27-06-09, 04:39 PM
sprento sprento is offline
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My 8800gt is well bent, prob the fact that the cooler is so heavy. One of these days it will fall off.
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Old 27-06-09, 05:29 PM
noobieocer noobieocer is offline
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why are you looking in to heating your mobo? you trying to sofen it to bend it back? i just hope you dont heat it too much and damage components or melt the solder cuasing parts to desolder off the board.
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Old 27-06-09, 09:43 PM
luckybob69 luckybob69 is offline
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dose it curve upward? what if this is intentional to counter the wieght of the heavier heatsinks and fan combos
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Old 27-06-09, 09:47 PM
luckybob69 luckybob69 is offline
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i have found a number of post like this most are linking to hs and fan combo

Warped Mobo

After 6 months of usage, due to the way the heat sink is mounted to the mobo, Intel boards are warped so bad that it can actually damage the layers.

I dare anyone to look at a 6 month old Intel mobo and look at the warp for your self.

You won't find this issue on an AMD mobo due to the plate used to mount the heat sink.

posted by : bjbrock, 02 March 2009
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Old 28-06-09, 10:01 AM
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Quote:
Originally Posted by name='noobieocer'
why are you looking in to heating your mobo? you trying to sofen it to bend it back? i just hope you dont heat it too much and damage components or melt the solder cuasing parts to desolder off the board.
The age old theory behind this goes way back to warped pcb and surface mounted/soldered components. When u bend a pcb, as the components' legs go through the pcb, they have a presence on both sides of the pcb - the upper side ~usually~ has the more bulk - underneath ~usually~ being just the tips of the soldered legs. It's these points where the solder beneath the pcb breaks away from the tracks running around the pcb that they're meant to be soldered to.

If u have a mobo that u know if broken, and are about to throw it away 1000% - bend it and u'll see and perhaps hear the solder coming away. (don't do it to a working one ofc).

What "oven baking" is meant to do it to get the solder to reconnect with the pcb in it's new shape. People are actually doing things similar to this to save xbox360s from rrod/rcod. Working so well in most cases that they're prepared to buy broken ones off people.

Agreeing alot with what luckyboy says too, even with a stock intel cooler, and the positioning of mounting posts, u can feel the pcb of the mobo give far too much when u press on it. Would be handy to have a back plate as standard, and elcheapo plastic thing would do.
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