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W60B emitting high-pitched noise
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msncookie Offline
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Post: #4
RE: W60B emitting high-pitched noise
(08-18-2021 08:19 PM)Phil2021 Wrote:  
(08-18-2021 09:37 AM)msncookie Wrote:  My W60B base has started to emit a loud high pitched noise or squeal. Angry It is about 3 years old and has been powered by a PoE switch with no issues until now. The noise starts as soon as it is connected to PoE/switch port. Wondering if anyone else has experienced this, but I presume my only option is to replace.

Thanks.

How can this reply be detected as spam then adding this sentence changes it enough to let it continue!

It will likely be coil wine from one of the power chokes, its a problem with all sorts of electrical equipment, a bit like a rattle in a car that develops, but someone else with the exact same car and model doesn't have it, just one of those things. It doesn't usually mean it is about to fail.

Unlikely resetting everything will help, unless the reset puts it back to a slightly different state and it's drawing a different amount of power, as that will adjust the frequency the coil runs at which might stop it resonating. You could try moving it to on its side or putting it flat for a while, it might stop after a while then as the coil vibrates and settles differently. It could also be one of the capacitors acting like a speaker as it is about to fail which could then stop it working.

If you are going to replace then first of all you could try some silicon type sealant and squish it into the coils on the PCB. The base opens easily enough, two screws then a nail running around the edge will eventually pop the top off. You will see on the PCB around 3 or 4 (depends on revision) little grey things marked with numbers on the top, like 220, 4R7 or 6RB and you will see around the sides a thin coil of wire, squishing some silicon sealant around them may dampen them enough to stop the coil whining.

Hope that helps

Thanks... I figured it must be something along those lines, but your idea - and attention to detail - is much appreciated! I just checked on it, and it appears to have stopped on its own overnight so maybe it "settled" as you mentioned. Thanks again for the tip.
08-18-2021 09:47 PM
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RE: W60B emitting high-pitched noise - msncookie - 08-18-2021 09:47 PM

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