Noisy ICX 8200-C08ZP (Coil Whine)

[Knowguy]

Purchased a gray market ICX 8200-C08ZP and it appears to be brand new in matching serial box. Device is flawless and works exactly as it should. But I noticed it is very loud with electronic noise / coil whine. The more traffic its processing the louder it is.

Was this a known issue and that is why these switches are being sold? I attempted to see if there was a way to pay for out-of-warranty service through support but I didn't get a lot of help.

Just trying to find out if this is a known issue, I only heard of this being a problem with the R770 APs, this switch being very new seems like I just received a lemon I hope. The ICX 7150-C12Ps that I am working to replace are dead silent.

[jonathan_golles]

A bit of an update; I talked to a Ruckus employee and they said they have a C08ZP on their desk, but it only makes the buzzing noise on bootup.

I wonder if this there's one factory batch of C08ZP's that has this issue after boot and we just were unlucky to get devices from that batch.

The noise is a bit annoying but my real concern is if this represents shoddy components and therefore a shortened device lifespan.

[Knowguy]

Nice update. I suspect they are experiencing the same thing that we are. The noise dies down once the device if fully booted.
Then the noise returns after any kind of load (traffic).
Like you I just want to be sure this isn't going to affect the longevity of the switch.

[Morad-Abbas]

Sorry to interrupt here, but coil whine cannot be fixed by software updates. It usually comes from a faulty or low-quality power supply component.

[Knowguy]

Yes I understand this, we just want to confirm if this is happening with a small subset of devices or if this is systemic to all 8200-C08ZP switches. I do not have the same issue on the 8200-C08PF. I don't want to continue rolling these out if its a known issue. Not that I would be getting an RMA as I do not have an official contract on these. I am a fan of the 7000 series so I thought I would try and help Ruckus out by investigating.