HD7950 missing mosfet

[dicky96]

i guys I have this Dual X Radeon HD7950

All the resistances check OK (and all other voltage rails are up) but I have a missing High side mosfet on the Vram VRM so that rail is down of course. Resistance on Vram is 60 ohm which is just fine.

Does anyone know what the missing component should be?

See pics - and thanks

[WayOfTheRoad]

Re: HD7950 missing mosfet

Is there a specific manufacturer for that card? I may know someone with that card but I'd like to be able to give all info available when asking.

[dicky96]

Re: HD7950 missing mosfet

OK Thanks, I'll check this morning and let you know

[dicky96]

Re: HD7950 missing mosfet

I didn't see as brand on it but hopefully these pics help?

[vinceroger69]

Re: HD7950 missing mosfet

Maybe this Sapphire Radeon HD 7950 3GB GDDR5 PCI-E

[SMDFlea]

Re: HD7950 missing mosfet

i guys I have this Dual X Radeon HD7950

All the resistances check OK (and all other voltage rails are up) but I have a missing High side mosfet on the Vram VRM so that rail is down of course. Resistance on Vram is 60 ohm which is just fine.

Does anyone know what the missing component should be?

See pics - and thanks

There`s a Sapphire sticker and a part number on the pcb 109-C38137-00 .Had a look for a schematic,can`t find one.

[dicky96]

Re: HD7950 missing mosfet

Well spotted - yes it's that one for sure

[lotas]

Re: HD7950 missing mosfet

Textolite with number 109-C38137-00 is the same as for SAPPHIRE DUAL-X R9 280 3GB GDDR5 OC WITH BOOST.

[SMDFlea]

Re: HD7950 missing mosfet

Textolite with number 109-C38137-00 is the same as for SAPPHIRE DUAL-X R9 280 3GB GDDR5 OC WITH BOOST.

Thanks for the info lotas .

NTMFS4C10N https://cdn.badcaps-static.com/pdfs/...3addefcd72.pdf

https://i2hard.ru/wp-content/uploads...0Dual-X/31.JPG
https://i2hard.ru/publications/21271/

[Pixcelart]

Re: HD7950 missing mosfet

Dual Channel mosfet??

[dicky96]

Re: HD7950 missing mosfet

@lotas @SMDFlea
Thanks guys, nice work. Parts ordered.


@pixcelart
No it's definitely as single channel mosfet