Re: Nexus 4090 Whining

Hi,
Thanks for replying! Well, the problem is starting to happen again with the new PSU. Which is that my LED lit fan controller is now starting to get dimmer by the hour... which is one of the symptoms described above that I noticed before the Nexus started failing and whining, and before the caps around the CPU blew. So I'm thinking that this new PSU is going to get ruined like the Nexus.

I did the recap on the motherboard and tried disconnecting everything I could (PCI cards, HD's, memory etc.). I even swapped out AGP cards. The...

Re: Nexus 4090 Whining

Okay,
Well I just tested the voltages (on the new Seasonic) as directed on the loaded PSU in the system by back probing all rails. They all test perfectly at the back of the connector. Well within tolerence. Almost perfect actually. So this is a component problem on the mobo somewhere.

Any ideas where to begin? I see no blemished components or bad caps on the board (I already recapped the blown ones around the CPU), but I'd like to do my testing as quickly as possible as this is a nice new PSU and I do not want to damage it buy running...

Re: Nexus 4090 Whining

Hello everyone.
Thank you so much for your help! Yes, looking at it now it have the UL number E190414. I was going to post pics... but I really couldn't find anything weird inside the PSU.

Rather than wait, I ordered and installed a brand new 520 watt Seasonic M12II Bronze. It's really nice... but this, my first time running it, still shows almost the exact same voltages in Speedfan. Everything seems to be in spec except for the +5v which is grossly out.

I took some screenshots so you can see what I'm talking about. The...

Re: Nexus 4090 Whining

Hello,
Thanks for the speedy reply! Looking at it now I only see Teapo, "RLS" (OST?), and Rubycon capacitors. Everything in this PSU is stock. There are a few pots in here too that I'm dying to tweak.

Anyway... would this whining coming from the transformer be a result of bad caps? If so, how would I go about diagnosing it? I do not see any bulging or anything that looks odd. Thanks again!

Hello,
First post... love this forum already. Great resource guys! I'm completely new to this and had no idea there were so many bad caps out there. To the chase:

Computer started taking multiple front switch attempts to power up. Switch... wait... switch again. Sometimes taking 5 minutes to finally boot. About 3 weeks go by and backlit fan controller slowly fades to blank over days... then suddenly one day gets bright again (4 pin molex 12v?). Then PC starts turning on by itself. Looked inside, mobo has blown caps around CPU and 4 pin connector. Replaced them with Rubycons...