My MacbookPro6,2 was experiencing GPU Panics. There are a lot of reports with regards to Apple previously replacing the boards and after a little while, the problem reappears. I did a lot of research on this issue when my MBP started to crash (GPU Panic) 5-6 times a day.
Results from my research, the issue is the Tantalum capacitor used to regulate power to the dGPU. When the dGPU is running at high performance settings, it requires a lot more voltage. Because the bad capacitor can't handle the voltage anymore, it cause the GPU Panic.
Solution was to replace the bad tantalum capacitor; not just with a similar part! If you do that, you'll end up with the same issue later down the road. The solution is to replace the bad capacitor with a better part! Louis Rossmann recommended using Aluminum Polymer capacitor because they are highly reliable! Here is the link to his video (https://youtu.be/DzcgT_fiVTA) ... just don't mind the language used! I used a Panasonic Aluminum Polymer Capacitor (https://www.digikey.ca/product-detail/en...).
Since I had the logic board out of the laptop enclosure, I decided to clean and replace all the original thermal paste that Apple applied. Note ... it is quite the mess they've created! Using more than actually needed.
Last image highlights the Aluminum Polymer Capacitor I used in my fix.
Overall results ... no GPU panic since replacing the bad capacitor. MBP is running very smoothly.
My Mac: MacbookPro6,2; MacOS Sierra -10.12.2; 8 GB; 512 GB SSD; External Display - Dell U2713HM @ 2560x1440.
I have a MBP 6,2 i7 and also this bloody GeForce 330M - do you think it's also not possible to fix it?
I have this same problem with my MacBook Pro mid 2010. My question is what is the exact value of the capacitor for the video switching?
Juanito Villanueva 의
It controls the voltage going to the discreet video graphics (GT330M). If the original cap can't support the required voltage, the Mac experience a GPU Panic.
When the system recognizes the need for the discreet graphics card, it will switch over from the CPU's graphics and that's where the GPU panic comes up.
Hope this answers your question.
I should add: You might find this tool useful to turn off the discreet GPU: gfxCardStatus that should stop the panic as proof the issue is within the discreet GPU logic.
gfxCardStatus doesn't work if you are connected to an external display on the MBP6,2. When an external display is connected to the display port, it automatically activates the discreet GPU. The real proof is in the actual repair done by Louis Rossmann and that I've been able to replicate the repair to resolve the issue for FOREVER. gfxCardStatus only handicaps the MBP.
The real issue is, Apple just using parts that is just "good enough" to pass. Over time the caps just can't handle the voltage requirements. Given the amount of money they charge for their laptops, they should be using PREMIUM parts! Not "just good enough".
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