CPU 4 Pin put in wrong " is mobo toast"

[Ballbreaker]

My bro stuck a CPU 4 pin in the wrong way, but pc wasn't tested for quite sometime before that.
now pc wont boot no cpu spin nothing.

i've paperclip tested PSU and seems fine, tried to boot with just cpu and out of the case " incase of shorts" still nothing
no signs of life

question can this "destroy the mobo" i would think it would have safety measures for this kinda thing
or is it just age of the board "LGA1155"

side note i cannot see anysigns of damage on the board... burns, swollen caps, etc no burnt smell

any ideas?

 

[HolyCowImAnoOb]

I dont think a cpu pin can be stuck in incorrectly? Its got shapes on the ends to prevent wrong insertions.

Didnt he perhaps put the PCI-e power cable in there?

 

[AceSwiftShooter]

is your bro a toddler who was fiddling with your stuff and playing match the shapes?
I joke, but I do not laugh. Thoughts... and all.

How did he put it in wrong? was it a rotational error about a 4 pin female? or a sideways shift along an 8 pin female? Either way I have no answers just throwing thoughts at you. lol. soz.

Also, how did he get that right?

 

[matrixkid]

I dont think a cpu pin can be stuck in incorrectly? Its got shapes on the ends to prevent wrong insertions.

Didnt he perhaps put the PCI-e power cable in there?

Have to agree here. They made these connections pretty foolproof. You can't mess it up.

Sent from my LM-G710 using Tapatalk

 

[OddballZA]

Have to agree here. They made these connections pretty foolproof. You can't mess it up.

Sent from my LM-G710 using Tapatalk

Agreed. The connector is designed to only go in one way. Because of the way its keyed you would either need to use a ton of force to somehow mangle the plastic enough to get it to go in, or actually physically cut the plastic.

 

[Ballbreaker]

he a noob tested the psu on some other guys machine then put it back in his pc wrong

something like this its a 8 pin that spits in two i tried what he did and it goes in with little effort weird maybe he forced it in?

https://imgur.com/a/uDeYpfh

 

[Ballbreaker]

its a Raidmax 300w nothing great was used for a gt1030 dont believe it comes with pci-e just a 8 pin for cpu?

 

[Gurshick]

I've done something clever like this once with a gpu, psu would just turn on and off immediately, and I did it few times after which I discovered my effff up. Fixed it up and all was fine.

In saying that I think most psu has protection in place if you swap 12v and ground. But not 100% sure on that.

Sent from my Redmi 8 using Tapatalk

 

[Off-The-Chart]

he a noob tested the psu on some other guys machine then put it back in his pc wrong

something like this its a 8 pin that spits in two i tried what he did and it goes in with little effort weird maybe he forced it in?

https://imgur.com/a/uDeYpfh

that rotation can actually work

only thing is, he should have noticed the clip on the end which should only go to the matching 'lock' on the mating connector

hmmmm, sending 12v through what should be a ground.......

any1 know the result that will give?

 

[Ballbreaker]

that rotation can actually work

only thing is, he should have noticed the clip on the end which should only go to the matching 'lock' on the mating connector

hmmmm, sending 12v through what should be a ground.......

any1 know the result that will give?

Well thats interesting because it didnt seem to struggle going in the wrong way, im just wondering why it has no signs of life no case/cpu spin nothing i have dealt with the split second fan spin but nothing at all doesnt seem good

 

[WiZard]

Most likely you fried the 12V output on the PSU, not all PSUs have short circuit protection. Try using a different PSU or testing the 12V output with a meter.

 

[Senshi]

Most likely you fried the 12V output on the PSU, not all PSUs have short circuit protection. Try using a different PSU or testing the 12V output with a meter.

Especially not shitmax, sorry I meant Raidmax.

Good chance you damaged/destroyed VRM's on the mobo as well.

Sorry but quoting "some kind of protection against this' is ignorant. It's like saying "I stuck a fork into the wall plug, I got zapped, surely there should be some kind of protection against this?"

There are 2 layers of protection here :

1. The connector is generally made to go only in 1 way, this was overridden and forced in.
2. Common sense

Sorry if I seem harsh but moaning/complaining that better safety/protection features should be in place (when they already are) when you/sibling made a booboo is what's wrong with humanity today.

 

[P1000]

he a noob tested the psu on some other guys machine then put it back in his pc wrong

something like this its a 8 pin that spits in two i tried what he did and it goes in with little effort weird maybe he forced it in?

https://imgur.com/a/uDeYpfh

That rotation would only short out the PSU 12V, and I am not aware of any PSU that does not have short-circuit protection inherently build into the topology (although this is set at a very high current for 12V). My professional opinion is that that particular error should not have caused any problems.

The question is why did he test the PSU in another PC, obviously there was a problem BEFORE he inserted the connector wrong...

 

[Ballbreaker]

Most likely you fried the 12V output on the PSU, not all PSUs have short circuit protection. Try using a different PSU or testing the 12V output with a meter.

Used a meter last night 12v all good def board related and not the shitmax

Just have no idea what is the problem with the board everything looks fine?

 

[Ballbreaker]

The question is why did he test the PSU in another PC, obviously there was a problem BEFORE he inserted the connector wrong...

Some work colleague pc wouldnt start his psu was fecked this one is fine

 

[marcus.strydom.daedalus]

My bro stuck a CPU 4 pin in the wrong way, but pc wasn't tested for quite sometime before that.
now pc wont boot no cpu spin nothing.

i've paperclip tested PSU and seems fine, tried to boot with just cpu and out of the case " incase of shorts" still nothing
no signs of life

question can this "destroy the mobo" i would think it would have safety measures for this kinda thing
or is it just age of the board "LGA1155"

side note i cannot see anysigns of damage on the board... burns, swollen caps, etc no burnt smell

any ideas?

Ive had 2 2nd/3rd gen boards die on me, with no signs of why or how

 

[el3venth]

Used a meter last night 12v all good def board related and not the shitmax

Just have no idea what is the problem with the board everything looks fine?

Did you check all the 12V pins? On the 24pin connector and the 4pin? Might have different rails.

With regardings to forcing the cable in, as my old woodwork teacher used to say whenever some kid tried to hammer in his dovetail joint as opposed to carving it right: "Hou op! Met genoeg krag kan jy jou vinger in jou hol afbreek."

 

[Ballbreaker]

Did you check all the 12V pins? On the 24pin connector and the 4pin? Might have different rails.

With regardings to forcing the cable in, as my old woodwork teacher used to say whenever some kid tried to hammer in his dovetail joint as opposed to carving it right: "Hou op! Met genoeg krag kan jy jou vinger in jou hol afbreek."

looks like all these XT raidmax PSU's use single rail, i didn't check the 24pin but 4 pin was reading 12v 🤷

does anyone know if i should try ovenbake this thing as a last resort because i'm 99% sure the board is the problem/feckd

 

[∀Z‾soʇɐuɐɥ┴]

Have to agree here. They made these connections pretty foolproof. You can't mess it up.

Sent from my LM-G710 using Tapatalk

I disagree that it's fool proof.
I have had to take a 8pin gpu extension before to plug into cpu 8pin port on a previous board, and while it takes some force, it can be done.
Atleast in my case I was just using a extension which, while the pin shapes were different, were still going in the right way.
Was also a temp solution that was running for like a day.

 

[Off-The-Chart]

I disagree that it's fool proof.
I have had to take a 8pin gpu extension before to plug into cpu 8pin port on a previous board, and while it takes some force, it can be done.
Atleast in my case I was just using a extension which, while the pin shapes were different, were still going in the right way.
Was also a temp solution that was running for like a day.

tbh, I find that hard to believe

reason being, the GPU 8-pin has 2 pins connected, so your force had to be something to get it to go in and not damage the connector

I also just tried putting a 6+2 into it and although the 6 part fit easily, adding the 2 didn't make it go

 

[nagapie]

Well my boss said anyone can build a pc however this thread clearly proves you need common sense to build a pc case or some other cases a torch and some glasses.

Worst thing i did with a psu when i was younger was flipping that 220v/110v
I think its called and it stank out my room learnt my lesson quickly as the smell stayed for a few hours.

I'm sure on all fully modular psu's say pcie or gpu or cpu etc. on the cable or by the port on the psu. On the nonmodular i havent had one in a while so cant comment but they should have the same i think but the cheapskate psu's probably wont have this.

 

[Ballbreaker]

Thinking of renaming this thread to can you stick a cpu 4 pin in the wrong way?

anyways we have determined it can... i did replicate this
probably because its a shitty PSU and doesn't have a thick
connector so it just slides in " thats what she said"

anyways

1. Did this break the MOBO? many people saying no it wont

2. Why would CPU fan etc have no spin/life besides the PSU "i know this is working"unless you think it can provide
12V and turn on and still be fucked.

3. Is board dead should i Oven bake it