Power supply clicking on new build (not not old build)

[champ222]

Hi all

Bit of a strange one here. I have a Corsair HX620 PSU that is about 10 years old. Its had an easy life, and its been flawless. ive recently updgraded my PC and now the PSU has started ticking. Its an irregular tick, not particularly loud, but a bit irritating. When under load, its silent, it seems to be when its idle that it ticks the most. It sounds as if a wire is hitting the fan, BUT its not the fan. if i stop the fan, it still ticks.

my old build:

core 2 quad Q6600
gigagyte 965P-DS4
Sapphire AMD Radeon HD 6850
Samsung 830 128GB SSD
3x of HDDs
Corsair HX 620W ATX2.2 Modular SLI Compliant PSU (CMPSU-620HXUK)

All fine like this.

My new Build

G4560
gigagyte Z-270X ultra gaming
Sapphire AMD Radeon HD 6850
Samsung 830 128GB SSD
Corsair HX 620W ATX2.2 Modular SLI Compliant PSU (CMPSU-620HXUK)

now it ticks. very strange.

looking around online, there are various videos etc of exactly the same noise.

any ideas what the cause is?

 

[champ222]

Power states? I'll have to have a google. What would I search for?

I did wonder if it was interference from the pwm system from the fans, or maybe the leds on board. I'll have to do some experiments...

 

[champ222]

good call, i'll give that a go.

thanks