Question C-states causing "bird twittering" on either coils or capacitors - what kind of silicone to apply to mitigate the twittering sound?

[uplink-svk]

Hey there mates!

My heavily modified cheap-ass SilverStone HELA 1200R Platinum is dead silent due to my mod, but when I have C-States enabled in BiOS, all hell breaks lose with bird noises in my PSU.

I tried different configurations with C-States, but all of the possible and impossible combinations cause the same twittering [not only C1e as is being suggested on some forums].

Could You please help me out? I know that the sound comes either from coils or capacitors, but I've no idea where from exactly.

Should I apply silicone on the coils that are being attached to that vertical PCB thingie?

Or should I apply silicone on the row of capacitors between the vertical PCB thingies?

Or somewhere else?

And my second question is, is the plastic plate necessary? I mean, is it for routing of airflow, or some protection from fan? I mean the fan isn't conductive, it's made out of plastic.

Here's a short video of the sound, so You can hear whether it's coil, or capacitors.

Thank You guys!

With best regards

uplink

 

[white.a.drew]

Hey there mates!

My heavily modified cheap-ass SilverStone HELA 1200R Platinum is dead silent due to my mod, but when I have C-States enabled in BiOS, all hell breaks lose with bird noises in my PSU.

I tried different configurations with C-States, but all of the possible and impossible combinations cause the same twittering [not only C1e as is being suggested on some forums].

Could You please help me out? I know that the sound comes either from coils or capacitors, but I've no idea where from exactly.

Should I apply silicone on the coils that are being attached to that vertical PCB thingie?

Or should I apply silicone on the row of capacitors between the vertical PCB thingies?

Or somewhere else?

And my second question is, is the plastic plate necessary? I mean, is it for routing of airflow, or some protection from fan? I mean the fan isn't conductive, it's made out of plastic.

Here's a short video of the sound, so You can hear whether it's coil, or capacitors.

Thank You guys!

With best regards

uplink

It's a cap issue your not the only one that has experience with this issue people have been saying they to rma countless numbers of these units because of it

 

[uplink-svk]

It's a cap issue your not the only one that has experience with this issue people have been saying they to rma countless numbers of these units because of it

Thank You for Your super fast reply @white.a.drew ! Well, hmm. Is this issue dangerous? Will it lead to faster deterioration of the capacitors, or their early demise, or even explosion? Would silicone over the caps help? Or would it make it worse?

 

[white.a.drew]

Thank You for Your super fast reply @white.a.drew ! Well, hmm. Is this issue dangerous? Will it lead to faster deterioration of the capacitors, or their early demise, or even explosion? Would silicone over the caps help? Or would it make it worse?

I honestly have no idea on a lot of that info I do know that most of the time a whining cap is a deadly cap in the long run and is never a good sign I can tell you that much however what in the end may happen deepends on several circumstances

 

[uplink-svk]

I honestly have no idea on a lot of that info I do know that most of the time a whining cap is a deadly cap in the long run and is never a good sign I can tell you that much however what in the end may happen deepends on several circumstances

Well, I just hope it won't set itself on fire. It has all of those OVP, UVP, O whatever protections, so I hope it'll last. I'll just pour some high quality dielectric and highly heat conductive silicone on it and will see. Thank You mate!

 

[Ralston18]

Consider it DANGEROUS.

PSUs are not made to be repairable or modified.

Attempting to make repairs or modifications could backfire for any number of reasons.

And without real knowledge of the components and purposes (i.e., "vertical PCB thingy" and "is the plastic plate necessary") is all the more indication that things are trending astray.

There may be "internet fixes" but none should be trusted. And could likely make things worse if some solution (e.g., silicon) is applied. Especially if not rated for electrical use or carefully vetted as being safe.

I do not know (full disclosure) the source or causes of the "bird twitters".

However, it is very likely that any fixes may not go well and even end badly.

As has been pointed out you modded the PSU. And a "cheap one" at that.

At best the mods voided any warranty. At worst - smoke, sparks, etc. could follow directly or with some further attempt to stop the twitters. Again: bad ending.

Uninstall the PSU. Recycle responsibly. Purchase a known brand and well vetted PSU to replace that "modded" PSU.

FYI:

https://www.tomshardware.com/reviews/best-psus,4229.html

No need to go any further with this thread.

Closing thread.