6930p "Core2Duo whine noise" has been resolved!!! Without disabling speedstep!!!

Well I just got a new Elitebook 6930p and its a fantastic laptop other than the dreaded "CPU whine" as some call it. Most uneducated people believe it is the CPU that makes this noise but in reality this has NOTHING to do with the CPU. Its the power components like capacitors and coils that make the Piezoelectric Effect which causes the noise.

I could not bear the whine noise after a few days so I took matters into my own hands. Sure I read about stopping the C1-C4 states in Intels speedstep but thats not a proper solution IMO since battery life will suffer. So how can we mask or cover up this annoying noise? How can we seal it inside the laptop so it does not reach our ears? I have the solution!


Oh YAAA! Seal it up all the power components with silicon sealer. Silicon sealer is perfect as it does not conduct electricity. These components do NOT generate any heat either.





GLOB IT ON!!!!




OH YA! MORE GLOBING!!


No more annoying whine noise!!!! It really works!

 

looks good =), only thing I can say is Im pretty sure there goes the warranty (unless you have accidental damage and maybe say you like had your laptop open and was fixing a window and the stuff fell all over)

 

I am not sure if that is the right thing to do. You may prevent the noise temporarily but if those power components are getting hot, insulating them with silicon will just make everything worse. I hope you don't open a new topic soon saying that you fried your motherboard...



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That does not look safe.... but good try and what made you get the idea with silicone?

 

If it does not conduct heat, then wouldn't you have overheating issues with the chips and parts of the mobo sealed inside a big pile of silicone?

In either case, HP will likely take issue with the fact that you dumped silicone all over the components if you ever do need to send it in for repair.

 

Silicon is an almost perfect heat insulator. Covering the half of the entire motherboard with it simply makes no sense.

I think this thread should be deleted for safety reasons. People will risk their laptops with such ridiculous ideas...


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LOL




10char

 

Ahhh the uneducated...I would recommend getting an education in electrical engineering before posting again. The components are capacitors and coils which do NOT generate heat.

 

It does not look safe to you because you are not educated in electrical engineering like me.

 

not a bad idea i guess its everyone has the right to their own opinion about the result u do what makes u happy..... i do my own mods sometimes i like them doesnt mean everyone has to like them its a matter of preference and choice.....and if taking risks is what solves the problem i say go for it.....thats what got us this far in life by taking risks so nice mod props to you.....

 

LOL! Ventana y Puerta Silicón, are you Spanish?

Could you give update after few months of usage, I'm really concerned if that silicone start melting inside because of the heat generated by others components.

 

I am doing Ph.D. in the Department of Electrical and Computer Engineering at Cornell University. Thanks for your recommendations...


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Not my fault you didnt pay attention in class because you 100% in the wrong here.

 

Sorry but Electrolytic capacitors do make heat. Its practically a battery and energy passes through it, thus heat is created. Not a large amount of heat is generated but its there.

The top vent of a capacitor is engineered to buldge out aka " swollen capacitors" when it is overheating, a surge or a bad reaction occurs. It is used to vent out hydrogen gas and electrolytes (similar to batteries) to relieve pressure and stop it from exploding.

Cover the top vent of a capacitor and your asking for a fourth of July hazard in your notebook. Its rare to have bad capacitors but its possible.

 

My goodness....come on people....the poor level of education you guys are displaying is INEXCUSABLE. Laptops do NOT use electrolytic capacitors they use solid-state capacitors which do NOT vent anything and are 100% sealed/encapsulated. You will not find one electrolytic capacitor inside a notebook like the one you've shown in your pic.

Im new to this forum and Im saddened to see so many people here improperly educated especially people with thousands of posts.

 

My 6930p has really vivid, intrusive whining when on battery. On AC it is very quiet, the whining is no louder than other C2D laptops and hard to make out above background noise.

When on battery I have found that running a video in the background really reduces the volume / frequency changes to something approaching acceptable.

 

You should only have covered the coils, as it's the coils that whine. The capacitors have zero contribution to the noise.

And yes, doing this is NOT going to fry your mobo. The existence of the whine in the first place does, however, hint that the power filtering is less than optimal, but you can't really fix that yourself.