New PSU - weird noise when at idle

[Turbo Ben]

HI all.

I've just started to get parts together for a new system. I'm looking to go direct die water cooled so wanted to run everything before I start delidding to make sure it all works.

Everything is working but I've noticed a weird noise coming from the PSU (gigabyte UD1300 GM - 1300W Gold). It's like a quiet crackling noise with occasional clicking. Sounds like a small electrical arc. It only does it when the system is at idle. As soon as I run cinebench the noise stops, but returns when the test finishes. Note that my idle power will be very low as I don't currently have a GPU installed.

It's not the fan as at idle the fan does not spin. Although I have seen it spin up for a short period even when not under load.

I've also noticed what I can only describe as a hot electrical smell. It's not a strong smell and is maybe just because the unit is brand new.

I contacted gigabyte a few days ago but haven't had a reply yet.

Is this something I need to be concerned about or is it normal when running a large PSU at such a low wattage?

 

[Turbo Ben]

Hi, thanks for the good info. Now you mention it I do remember the GN videos of the GB PSU's exploding.

Think I'll go for something else.

I've contacted the company I bought it off and they won't accept the 14 day return as I've used the PSU. They offered a discount or I can return it for a refund pending an inspection. I don't trust them so I'll chase Gigabyte up (still haven't had a reply, been 4 days now). Also just tried signing up for gigabyte forums but have to wait for someone to activate the account. God knows how long that's going to take. Not impressed so far with the after sales service.