PC Graphics card

[newtothis]

I have here a Nvidia GTX Titan Black that will not post. The fan spins briefly before stopping with no output.

As I am not used to working on graphics cards I am after a little help if possible :

What do I start checking first?

[Spork Schivago]

Re: PC Graphics card

Did you try the video card in another computer first? If you don't have another computer, did you try it in another PCI-E slot? I'd start there. Rule out the motherboard first and once you've confirmed that it is in fact the video card, maybe look around for bad capacitors? If it works in another PC, I'd make sure your BIOS is fully updated. I've seen where some video cards prevent POST but a simple BIOS update fixes it. I believe the Asus Rampage V has some issues with certain video cards where a BIOS update fixes the problem. Just a thought.

[newtothis]

Re: PC Graphics card

I am tech savvy Its the card

[newtothis]

Re: PC Graphics card

I have reballed the RAM and GPU as a precaution but still no joy. It is as if the card has a short as it powers down with no POST... Resistance across power terminals come back nominal and by what I know of testing these MOSFETs they are fine too.

Funny that you say about the Asus V, I am using a crosshair V but bios is fully updated and card has been tested in 3 different machines

[stj]

Re: PC Graphics card

when the fan stops is the psu and motherboard still running?

[newtothis]

Re: PC Graphics card

Yes, Just no post. Motherboard shows a VGA error (GPU)

[newtothis]

Re: PC Graphics card

Checked BGA soldering via 800x magnification, All looks good.

Ok lets start at basics to make sure I am doing this right.

How to check if a card is shorted? What points do I use?

[stj]

Re: PC Graphics card

check for shorts across the fets and smoothing caps.
if your lucky it will be a shorted ceramic cap.

[newtothis]

Re: PC Graphics card

Will get a picture up shortly so can point what to check if that's ok?

[newtothis]

Re: PC Graphics card

ref image

[stj]

Re: PC Graphics card

everything big that is prefixed with the letter "C" on the board.
the cans with blue print, and the black rectangles.

yes, i know there are a lot!

[newtothis]

Re: PC Graphics card

These?

what reading should I be looking for?

[stj]

Re: PC Graphics card

that's some of them.
the exact readings arent important as long as none are shorted.

[newtothis]

Re: PC Graphics card

Full continuity on all the ones in red except the 2 to the right

[stj]

Re: PC Graphics card

have you got a hot air system?

[newtothis]

Re: PC Graphics card

Yes and I have a full IR setup too

[newtothis]

Re: PC Graphics card

bump

[shovenose]

Re: PC Graphics card

Is it not still under warranty??

[newtothis]

Re: PC Graphics card

Nope.

Repair needed

[stj]

Re: PC Graphics card

do you have an esr meter?
because if not it's gonna take a while.