FYI i am waiting on an approval for a flat rate motherboard repair from the client, when it is approved, I will really start to dig into the board starting with resoldering our friend GPU_Vcore chip. gmux? its been a while since ive seen one of these so i might have just assumed the gender of gpu vcore
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820-3332-a - Video problems when on dedicated GPU (high power mode)
- Thread starter Joesipaq
- Start date
Reflow (resolder), change U8900, in this order.
Reflow should be good enough...
If no result, then reflow GMUX too.
Reflow should be good enough...
If no result, then reflow GMUX too.
U9100 is DPMUX and U9150 is the Analog MUX.
Do you get same issue on external screen?
Do you get same issue on external screen?
In this case looks like GPU/vRAM issue.
However, reflow U9100 and see if helps.
However, reflow U9100 and see if helps.
I have not re-flown U9100 yet, as practicing i havn't gotten the temp right yet, and pop-corned a chip... Oops. Got 2 more boards to learn on before this one. I am thinking though, it it is a nVRAM issue, and i see results, most likely wouldnt it be a temporary solution due to just heating the SNOT out of the nvram by proximity? If this is a temp solution, id rather not offer it to my client.
Has there been a bypass created for this board yet? Or is that something i should try to crunch out of the schematics to copy the other ones floating around?
Has there been a bypass created for this board yet? Or is that something i should try to crunch out of the schematics to copy the other ones floating around?
Thanks for the heads up Duke. VRAM i think would be simple enough to change out, but the GPU, i haven't done that before and have seen the videos of that east machiene to do bga on gpus, do i need soething like that to correctly change out the gup?
Where would you source the vram and gup from?
Where would you source the vram and gup from?
GPU would need a decent rework machine yes. VRAM are not something that normally goes bad so getting them off Ebay/Ali from China should be ok. I would try the VRAM first as these GPUs don't tend to go bad.
You did make sure the problem only exists when using the NVIDIA GPU? Problem should not be there when on Intel of course. Run a 3D test like "heaven" to test.
You did make sure the problem only exists when using the NVIDIA GPU? Problem should not be there when on Intel of course. Run a 3D test like "heaven" to test.
I would say the odd video issues are consistent with what i have seen in bad ram. Thanks Duke.
I know there is a sub fourm for Tools, but to ask you directly, do you have any experience with what would be a decent rework machine 240v for casual stuff? I don't think ill get hardcore into bga rework - but who knows
I know there is a sub fourm for Tools, but to ask you directly, do you have any experience with what would be a decent rework machine 240v for casual stuff? I don't think ill get hardcore into bga rework - but who knows