Warping mobos

[Rastalovich]

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.

 

[noobieocer]

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

 

[tinytomlogan]

Back plates make no dif to warping in my experience.

Does it have anything bolted to it Rasta as that is usualy the cause.

 

[rapidman17]

could be that you havent got all the motherboard spacers in and is casuing undue stress in one area.. ?

 

[Rastalovich]

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.

 

[sprento]

My 8800gt is well bent, prob the fact that the cooler is so heavy. One of these days it will fall off.

 

[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.

 

[luckybob69]

dose it curve upward? what if this is intentional to counter the wieght of the heavier heatsinks and fan combos

 

[luckybob69]

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

 

[Rastalovich]

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.

 

[zak4994]

Mine has been running an intel board for about 1 year and 6 months and mine hasnt warped a single bit.

Guess it depends on build quality too eh?

 

[Rastalovich]

Yeah build quality has to add something, but I don't think it helps the number of times I've perhaps replaced the cpu etc on the mobo / install / uninstalled it. And perhaps left it folding at times @ 100% on air for maybe the cpu and gpu, being very oc'd maybe.

Definitely method of use is a factor.

 

[mayhem]

There is way to much weight on them and add in the fact these PCS are not flat they are on there side + the fact of gravity and all so as said all ready that fact the parts are not soldered on correctly this causes warping.

Oven method only works because it heats up the whole board. Touching the board will not be as good as your only heating up sections you better off Using a hot pan or oven THB.

The xbox 360 isn't to bad but many ppl mess up because they don't have a proper frame to put the xbox 360 PCB on and the cause more problems than they solve..

I do quite a few Xbox MBs (360 and Old ones) and i would say i have about a 80% success rate which isn't to bad. How ever i don't by RROD because you don't know what your getting. Ive seen ppl buy RROD's not knowing what there getting and the bord inside is buggered beyond repair due to very bad oven methods. e.g PPl laying them on the Oven tray's or on the Racks lol.

The best way how ever for a bent MB is to lay it on a Make shift Rack screwed down (peace of thick wood that flat). place it in the oven and do it slowly for about 1/2 hour then let the oven cool down naturally.

Then leave it still fixed to the rack for a couple of days (put it in the airing cupboard). Once finished it should have re flowed all the solder and the MB hopefully may have warped back into shape.

Dont how ever take the MB straight off the rack after the oven else it will go back to its natural form (Bent) ....

 

[luckybob69]

I am back on this mobo warping again, I think it is an important topic that is not realy being talked about. The above photos are of the P6T with the cooler master V8 I think even with the back plate it could still warp. And what if I takemy case some where should I remove the cooler? Yes I know the cooler was the wrong way I corrected that after the photo

 

[Rastalovich]

Not exactly even spaced posts under the mobo either.