Hi all. I need to identify what sort of tiny surface mount resistor this is and ask for advice on how you would go about soldering one on. I do not have a SMD reflow kit but I am willing to get one if it takes that to fix this. I do have a Hakko FX-951 with several small tips. The image shows which resistor it is. I know very little about GPU hardware itself but I'm guessing this part is crucial to its operation because it no longer works with this resistor missing. I've attached a pic showing the missing resistor outlined in red, it was detached from the GPU and lost afterward.
I have tons of laptops with nvidia GPU's that I could take one off of, I'm just clueless as to exactly what the rating of this resistor is and if it is a common component I could remove from donor device.
The gpu is an nVidia GT 650m GK107 (N13P-GT), I can tell from this nvidia hardware documentation PDF (
https://media.readthedocs.org/pdf/envytools/latest/envytools.pdf ) that the following products use the same GPU, but I just don't know nearly enough about component level hardrware to know if this resistor is something common among other GPUs as well.
device id product
0x0fc0 GK107 [GeForce GT 640]
0x0fc1 GK107 [GeForce GT 640]
0x0fc2 GK107 [GeForce GT 630]
0x0fc6 GK107 [GeForce GTX 650]
0x0fd1 GK107 [GeForce GT 650M]
0x0fd2 GK107 [GeForce GT 640M]
0x0fd3 GK107 [GeForce GT 640M LE]
0x0fd4 GK107 [GeForce GTX 660M]
0x0fd5 GK107 [GeForce GT 650M]
0x0fd8 GK107 [GeForce GT 640M]
0x0fd9 GK107 [GeForce GT 645M]
0x0fe0 GK107 [GeForce GTX 660M]
0x0ff9 GK107 [Quadro K2000D]
0x0ffa GK107 [Quadro K600]
0x0ffb GK107 [Quadro K2000M]
0x0ffc GK107 [Quadro K1000M]
0x0ffd GK107 [NVS 510]
0x0ffe GK107 [Quadro K2000]
0x0fff GK107 [Quadro 410]
You may be asking yourself 'why is it so important to you to repair a GPU from 2012? buy a replacement for 10 bucks'... unfortunately for me it is not so easy. The computer is a macbook pro retina a1398 MC976LL/A EMC #2512 Mid-2012 and all of these macbook pro retina editions used a proprietary interface for their SSD, you cannot swap SSD's between the models, so if I were going to just replace the motherboard I'd have to make absolutely certain the MBP was the same EMC# produced in the same months. The motherboards are rare and expensive or I could buy an entire replacement laptop but they still hover in the $1,000+ range.
Thanks so much for any help you can offer.