PSU coil whine under continuous load : the Silent killer or it's harmless?

[HashRate Hero]

For my home Farm !

Some power supplies started a slight coil whine under 24/7 load, but multimeter voltages are rock solid. Do you replace them immediately as a precaution, or just ignore it?

[retaur]

I think it should be harmless. Most devices make noise when under load, especially transformers. If a phone charger makes a noise, a PSU making one isn't too abnormal.

If the multimeter and miner are running with correct values then there's probably nothing to be concerned about.

[HashRate Hero]

I think it should be harmless. Most devices make noise when under load, especially transformers. If a phone charger makes a noise, a PSU making one isn't too abnormal.

If the multimeter and miner are running with correct values then there's probably nothing to be concerned about.

Maybe it s due to another device that interfers with the signal   ..... probably ! In fact the charger were silient before i moved the setup near some other devices ....


I will update once i back home !

[FP91G]

For my home Farm !

Some power supplies started a slight coil whine under 24/7 load, but multimeter voltages are rock solid. Do you replace them immediately as a precaution, or just ignore it?

I've encountered this problem, but it usually doesn't interfere with the equipment's operation.
You're doing the right thing by looking at the instrument readings and not the noise. Noise doesn't reduce the lifespan of components, but it can be a nuisance if you're frequently near the equipment.

[philipma1957]

what age is the psu?
what watts can the psu do?
how many watts are you pulling on the psu?

does the psu plug into 220/240 volt or 110/120 volt?

whine can mean a lot of different things.

most are harmless but not all.