Burned ferrite bead RTX 2080 LB617

[Borges]

have purchased an RTX 2080 which contains a scorched component. I have carefully removed it with a heat station. The card is not short and it works, but it is seen with artifacts.

The problem is that I cannot find the characteristics of the component anywhere. I am going to attach a photo in case someone has the same graphics card and can measure the component or if someone knows which one I have to buy. I would really appreciate it

:trashcan:

[dicky96]

Re: Burned ferrite bead RTX 2080 LB617

First thing -those ferrite beads look like capacitors to me

Second thing they seem to be connected near the 12V 6/8 way connector (can you confirm one end of them goes to ground and the other end goes to 12V?)

If that is the case just remove them - they will be nothing to do with artifacting that will be caused by some other problem - try testing the Vram for faults. If you find any it could be faulty RAM, faulty GPU memory controller or faulty voltage supply to either

This video explains how to test the Vram, all you need is a hard drive 80Gb or more - then post the results here


https://www.youtube.com/watch?v=a4QUkoBvxuY

[TheLaw]

Re: Burned ferrite bead RTX 2080 LB617

They are ferrite beads. They are labeled LB617 and LB618.

Hard to say if they are the cause of the artifcating. Remove them, clean up the boards, check if traces are damaged. You can start by just replacing them with 0-ohm jumpers and see if that fixes it. I can't tell what package size those are, maybe 0603?

If the ferrite beads are in fact needed for proper function (and not just as EMI mitigation) you can start with a chip bead with Z = 10 - 50 ohms @ 100MHz, and go up from there, swapping out beads until it works (maybe).

https://www.fair-rite.com/product-ca...ts/chip-beads/

[Borges]

Re: Burned ferrite bead RTX 2080 LB617

I have recently removed this ferrite beads from the board and the GPU is working with the same artiffacts, which makes me believe that they might work as fuses.

It could be that the due to the ferrite beads being burned or not present on the board the 12V rail might not be closed therefore underpowering the board.

I think that the dimensions of the ferrite bead are between 2mmx1mm and 1.6mmx0.8mm