not seen before , need some help please imac27" 2011

[Dozer]

already the 2. new(2014) GPU but no change. can that be from VRAM and if yes there are 8 what is the best way to figure out wich
tryed already with a good grafik car there are no problems

 

[aprendiz]

If with other grafic card you have image, replace all VRAM..... They are pretty cheap and can be replaced in 15 min...

 

[dukefawks]

What card is this? 6770 or 6970?

 

[Dozer]

No Title

109-C29657-10

i think a 6990 2GB

I replaced all 8 VRAMs, needed 2 houres, here the result

 

[Dozer]

No Title

 

[dukefawks]

New chips do not exist, the 2014 are polished remarker fakes. What are you doing?

 

[Dozer]

oh, ok damn the 2014 chips are realy rare and expensive. :-(

so the suggestion is to replace again with another gpu?

 

[dukefawks]

This card is too fucked up now, gonna be a time waster. Find a 6770m replacement.

 

[Dozer]

No Title

just for fun looked over the card and I found an aerea with nocked off 4 parts
C2243
C2443
R2310
C2305

Just toke them from a junk card

and now the stripes are gone !

 

[Dozer]

No Title

then starting asd, comes the apple logo, the rotating circle and then this picture

 

[Dozer]

still any idea? seems me the problem is from my replacing the VRAM.

i think the stripes coming from missing R2310

but they were black and after VRAM change i had them blue.

 

[dukefawks]

1) It can be anything, GPU/VRAM/some other damage
2) You still have a fake GPU

If you have more time to waste pull and reball the VRAM/GPU again........Then have this return in 3 months with a dead GPU again........

 

[Dozer]

so, ok I understand.

about the fake gpu. is that meaning there is no solution for that videocards? the only is to replace the gpu with another one not new or fake.

how or are you still repare this videocards?

 

[dukefawks]

I posted a solution on the Netkas forums. Not that 079800x chips are easy to find....

 

[Dozer]

Chapeau Duke ! Found it, great work! Thanks. I have here still some pills for trying that.

 

[dukefawks]

Let me know if you find the chips, all the ones listed as new on Ali are garbage.