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**Mad_Professor** · 04-02-2013, 09:49 AM

Re: CPU 1156 Socket expertise required...

I don't see a problem here, but then again I'm not looking at the pins closely unless there is a problem.

Perhaps you can post comparison photo since I don't have any 1156 on hand to look at.

**spleenharvester** · 04-02-2013, 09:54 AM

Re: CPU 1156 Socket expertise required...

Same, I can't see a problem here. Is the board in question functioning?

**370forlife** · 04-02-2013, 09:57 AM

Re: CPU 1156 Socket expertise required...

I see no problems either. The ones on the right look like they are maybe off by a few thousands of a inch compared to the rest, but that effect could be had if you are not looking perfectly, directly down on the socket.

**hairykiore** · 04-02-2013, 11:00 AM

Re: CPU 1156 Socket expertise required...

Three replies ..this is great.....DSCN0836 is what I thought was the reason for the PC not posting IE the fan would go for up to 30 seconds,cut out and immediately power up again and keep repeating this sequence ..Then I found what I believe was a socket short...one can see the crossed over pin ..this was fixed..but the MB when re-installed did exactly the same...

DSCN0851 is a 1156 socket from another Gigabyte MB which works.....

Now just in case anybody thinks the picture was taken at an angle ..I covered this by using a poor mans peep hole to take the photo through. see DSCN0855 (.I used 2 tins of baked beans to get the camera in focus and my arms steady ???

I am still convinced its a socket problem ...

I did circle 2 pins in an earlier black and white enlarged photo ..I thought that its highly likely these pins touch especially with the CPU which compresses them down slightly when latched....Maybe its worth a try to move one slightly and put the board back in the unit and try again...
Hk

Attached Files

**trebo** · 04-02-2013, 02:30 PM

Re: CPU 1156 Socket expertise required...

maybe the CPU got damaged when you had the short in the socket, when those pins touched.
worth trying another CPU

**hairykiore** · 04-02-2013, 09:52 PM

Re: CPU 1156 Socket expertise required...

Originally posted by trebo View Post

maybe the CPU got damaged when you had the short in the socket, when those pins touched.
worth trying another CPU

Hi..Yes I thought I had explained everything has been checked with alternative working components eg the MB when bought had an i7 in it..it has since been checked with an i3 that I know goes....I did try the original i7 in another Gigabyte MB and it failed BUT hopefully this was because I never knew at the time this can happen with no graphics card slotted....
My main concern at the moment is the MB ..I have blown those pins up even more in an image viewer and I still think the two pins I circled in my original post could be touching .....Now its easy to separate them? but I thought it best to get some expertise comment on the pins which are clearly out of alignment in the upper segment especially down the right side...
It seems by the comments this is not an issue and everybody thinks the contact points will touch the CPU pads properly....
I have read of a MB being revived after 5 trys of checking/rechecking socket pins ??
I will move that one pin I have concern about a degree away from its next door neighbour and put everything back in the case and power it up...basicly thats all I can do....I have tryed to send the socket photograph to Gigabyte for comment but it failed to attach???

Of course if I was an expert ..there is probably a test one can do on the board itself to find any short...and the problem could be something else on the M/B ...its just that the way the fan starts up and fails apparantly is typical of a socket pin short... thanks hk

**hairykiore** · 04-02-2013, 10:31 PM

Re: CPU 1156 Socket expertise required...

Hi..Moved pin and Just did a simple bench test ...MB/cpu with PSU and started with touching the F socket Power pins with a screwdriver.... I actually thought it was gong to keep going..but after 35-40 seconds it rebooted ....The length between reboots is a worry ..I thought a short was a lot quicker between boots ....any comment is welcome ?? It may not be the socket..Hk

**hairykiore** · 04-02-2013, 10:56 PM

Re: CPU 1156 Socket expertise required...

Code:

I finally got ASUS tech support on the phone Monday; he had me strip everything off the motherboard except the power supply connected at the 24 pin and 8pin CPU mounts. Fortunately, the Rampage II extreme has a start button on board! Started up, and power supply fan cut off in 40-60 seconds indicating the usual failure. ASUS TS said it sounded like a ground fault, and could either be the motherboard or power supply. Long story short... Picked up new power supply from nearest town (1.5 hours each way), bench tested, success!

Hi I found this in another forum post via Google ..Similar problem so just in case I tryed another PSU ...Same result ...A ground fault ?? is this a short?? thanks Hk

PS I wonder if bench testing as I am doing with PSU and MB....if the audio speaker was plugged into the F Socket would it beep ?? So much to learn?

**Uranium-235** · 04-03-2013, 08:17 AM

Re: CPU 1156 Socket expertise required...

the VERY bent pin is 10:AR - Memory lane shorting to 10:AP ECC Memory lane (unsued for your CPU) - I'm not sure this would damage the CPU, or ram

however the ones that are circled that don't look bent are in the power section of the grid, they're actually VCC and ground. I'm not sure this is enough to kill your CPU VRM, but perhaps the chip's power regulation of the die itself. The i7 may really be dead, you should check that out

here is a clarksdale (xeon) lga 1156 pinout. It is essentially the same but there are some unused contacts like ECC and the like for all non-xeon sandy bridges

https://cdn.badcaps-static.com/pdfs/...7c44743e4e.pdf

**hairykiore** · 04-03-2013, 11:24 PM

Re: CPU 1156 Socket expertise required...

Thanks for your reply...Of course at this stage its the MB I am trying to get going and I am using a perfectly good and tested i3 CPU.....and the MB will not go with it... Now I have taken photographs and enlarged them etc and MY concern is still what I see as the pin alignment on the right side of the socket ...the pins have been twisted anti clockwise ..Yes only by a small degree but when I look at a photo of the contact pads on a CPU ...there is no room for misalignment ....Hk

**Uranium-235** · 04-04-2013, 01:52 AM

Re: CPU 1156 Socket expertise required...

this is why I hate LGA. One of the many reasons anyways. That metal used in those pins is VERY stiff. I don't think I had one single fixed LGA socket in my life

**momaka** · 04-04-2013, 11:54 AM

Re: CPU 1156 Socket expertise required...

Not sure if this will work, but if you have nothing else to try...

Try coating the CPU pads with a very thin layer of flour (put the CPU with the pads facing up, then put some flour on your hands and clap them close to the CPU. This will create a cloud of flour. Let it settle and repeat again several more times to get a thin even layer.)
Then carefully put the CPU in the socket (try not to move it once in the socket) and close the latch.
Open the latch and again carefully remove the CPU from the socket. Look at the CPU pad side and see what scratch "pattern" the pins from the socket made. If any of them go outside the pads - particularly those from the "misaligned pins", then you may have a pin alignment problem.

Other than that, the CPU socket looks fine to me as well.

**seanc** · 04-09-2013, 03:03 PM

Re: CPU 1156 Socket expertise required...

Check the mosfets for dark/discoloured ones, shorted or blown ones to the left of the CPU socket.
I've had multiple failures of the S2V boards.

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