Corsairs JohnnyGuru: 12VHPWR melting problem is caused by connectors not properly plugged in

#6070285

XenthorX

2022-11-09 09:17

Well that's reassuring.

#6070287

k3vst3r

2022-11-09 09:22

Sounds like problem enhanced by users been extra careful with the 12 pin adaptor trying not bend it excessively an insert it carefully, that sometimes it isn't seating proper when they think it is fully inserted.

#6070288

Goiur

2022-11-09 09:30

So... the connector is tr**** that cant be seated correctly (bad QC) or its not obvious when its not seated correctly (connector tab well seated but the connector is not completely inserted)? Users failing to install it correctly should be taken into account, but many tech people took a look into it and did not noticed that (i did no see anything about it).

#6070296

Pale

2022-11-09 09:52

Goiur:

So... the connector is tr**** that cant be seated correctly (bad QC) or its not obvious when its not seated correctly (connector tab well seated but the connector is not completely inserted)? Users failing to install it correctly should be taken into account, but many tech people took a look into it and did not noticed that (i did no see anything about it).

Gamers Nexus also did extensive testing into the issue, and was unable to reproduce the melting cable even when they, for experiment's sake, intentionally damaged the adapter in ways which should increase resistance through the connector, and thus produce more heat. But they were entirely unable to reproduce the results across six different adapters. They also noted however, that their adapters were soldered differently than for example the one presented by that German site. This is a weird issue by all means.

#6070299

Spets

2022-11-09 10:04

Moments like this I'm glad I over tighten things 😀 Now to gloat to the wife as I replace the washers in the taps >.>

#6070301

SniperX

2022-11-09 10:06

In other words....make sure the connector goes balls deep into that 12pin socket... 😀

#6070303

kakiharaFRS

2022-11-09 10:10

Just received a cable from aliexpress and it was pretty shocking, videos and pictures you see online don't do this connector justice so I made a picture for you the two connectors on the left are cable mods 18AWG the 3 on the right are from aliexpress they are 16WG, I ordered a 18AWG too but they cancelled the order 😏will order another one but it's going to take 1-2 months again bottom line is the new connector is SMALLER than a single old one (wider but less height which you don't see here) and of course the contact surface of each 12V pin is smaller too it's insanity that someone gave this an ok for production a car subwoofer amplificator also works with 12V and the cable from my battery to my amp was as thick as my pinky finger for a 55A fuse, so pretty much the same current a 600W gpu would see, talk about a difference in safety

edit : the connectors are taped against a table and had no notable height difference so that's 1:1 size for the two types of connectors, no visual tricks here

#6070304

Kaarme

2022-11-09 10:11

It's also a bad design choice, and nothing else, if a connector is easy to connect improperly without noticing. We have had electric connectors since the 19th century, so it's not exactly a new field of engineering. Like k3vst3r said, it's also a grave matter that when you are dealing with a really expensive device and have heard rumours of the adapter being sensitive, lots of people may not be willing to use enough force to push the connector in. If you break the adapter by manhandling it, you can't use your card, yet the warranty won't help you either.

#6070305

Astyanax

2022-11-09 10:18

stop blaming the connector, which has been tested for years under the required loads and then some, with flying colours, its obviously a protection method for fragile egos, but doesn't correct the issue going forward. molex has had connections of all tightness over the years, nothing has changed.

#6070309

TheDeeGee

2022-11-09 10:26

kakiharaFRS:

Just received a cable from aliexpress and it was pretty shocking, videos and pictures you see online don't do this connector justice so I made a picture for you the two connectors on the left are cable mods 18AWG the 3 on the right are from aliexpress they are 16WG, I ordered a 18AWG too but they cancelled the order 😏will order another one but it's going to take 1-2 months again bottom line is the new connector is SMALLER than a single old one (wider but less height which you don't see here) and of course the contact surface of each 12V pin is smaller too it's insanity that someone gave this an ok for production a car subwoofer amplificator also works with 12V and the cable from my battery to my amp was as thick as my pinky finger for a 55A fuse, so pretty much the same current a 600W gpu would see, talk about a difference in safety

edit : the connectors are taped against a table and had no notable height difference so that's 1:1 size for the two types of connectors, no visual tricks here

I wonder why they didn't stick with the longer pins atleast. That could have prevented this issue.

#6070310

Goiur

2022-11-09 10:27

Astyanax:

stop blaming the connector, which has been tested for years under the required loads and then some, with flying colours, its obviously a protection method for fragile egos, but doesn't correct the issue going forward. molex has had connections of all tightness over the years, nothing has changed.

lab testing != real world

#6070316

codyrocco

2022-11-09 10:39

Let's use this:

#6070319

andreiga76

2022-11-09 10:43

I can confirm it's easy to think the connector is inserted and in reality is not fully, you need to push a little more until you hear a click, you need more pressure than you are used with with 8 pin connectors.

#6070321

Astyanax

2022-11-09 10:46

Goiur:

lab testing != real world

Get a valid argument, you think the 8 pin and 4 pin molexes didn't melt at all? get real. PC Builders adapt or leave the hobby. Atleast the humans in a lab learn from failure, instead of shirking responsibility.

#6070330

H83

2022-11-09 11:09

Astyanax:

stop blaming the connector, which has been tested for years under the required loads and then some, with flying colours, its obviously a protection method for fragile egos, but doesn't correct the issue going forward. molex has had connections of all tightness over the years, nothing has changed.

Goiur:

lab testing != real world

Some guys here mentioned that maybe the lab testing was made without using a case and I wouldn't be surprised if this really happened. To make matters worse, the 4090 is huge, making it harder to seat the connector properly inside a closed case.

#6070333

mentor07825

2022-11-09 11:29

This reminds me when Apple told their customers that they're holding the phone wrong.

#6070338

hamltnblue

2022-11-09 11:41

The problem here is two fold. 1, too many connections on a single small plug. 2. The connector wasn't made Idiot proof. The more pins you have to press in, the more tension. Not every one has the same strength, or are afraid to apply enough pressure. To those who don't do this often, there is a fear of breaking the connector, so don't press hard enough. They should have stuck with the three, 8 pin connectors used on the 3000 series

#6070343

cryohellinc

2022-11-09 11:54

Funny attempt to put the blame away from them. In any case, I'm one of those paranoid ones that always makes sure seated as best as possible in the socket.

#6070344

Goiur

2022-11-09 11:55

Astyanax:

Get a valid argument, you think the 8 pin and 4 pin molexes didn't melt at all? get real. PC Builders adapt or leave the hobby. Atleast the humans in a lab learn from failure, instead of shirking responsibility.

¿70? years has gone by since the molex started... You would think that in 70 years basic design flaws would be avoided. Get a valid argument yourself.

#6070347

Astyanax

2022-11-09 12:09

Goiur:

¿70? years has gone by since the molex started... You would think that in 70 years basic design flaws would be avoided. Get a valid argument yourself.

plastic can't be perfectly molded every time, thats why the design has its specified tolerances, get stronger and push it in right instead of passing off responsibility. hey, maybe blame the AIB's for not using the vendor nvidia told them to use, since FE's, Palit and PNY cards have no issue accepting any adapter or native cable instead of the actually fine connector in the adapter itself.

cryohellinc:

In any case, I'm one of those paranoid ones that always makes sure seated as best as possible in the socket.

Good man, because even the ATX24, EPS and PCIE 8 pins can melt this way if the connection is bad, and we've seen plenty of those cases. https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FmkTKa.jpg&t=642&c=H_IiWUYnrbtS4w