Hi,
I have an RTX 2060 6GB Samsung on 2060/2070 Nvidia PCB. It's running fine below 0.9v, above 0.9v it crash, even with -500MHz. There is no error on MATS. The VR controller is the uP9512R and there is 5 mosfet. All measurement were done under load with Unigine Superpositon.
Here is a measurement of core voltage behind the core, doesn't seems right (20us/div) :

Here is what one of the PWM signal looks like (they all looks the same), with some "empty" period (2us/div) :

Do you think the VR controller is bad ? What should I check ?
Thanks for your help :)



Привет,
У меня есть RTX 2060 6 ГБ Samsung на плате Nvidia 2060/2070. Он работает нормально ниже 0,9 В, выше 0,9 В падает, даже при -500 МГц. В MATS ошибки нет. Контроллер VR — uP9512R, 5 мосфетов. Все измерения проводились под нагрузкой с помощью Unigine Superpositon.
Вот измерение напряжения ядра за ядром, кажется неправильным (20us/div):

Вот как выглядит один из сигналов ШИМ (все они выглядят одинаково) с некоторым «пустым» периодом (2us/div):

Считаете ли вы контроллер VR плохим? Что я должен проверить?
Спасибо за вашу помощь :)

any idea ?
Есть идеи ?

Turns out it was 12v filtering that was bad. I added a few more 12v caps and it's working without issues now.
Оказывается, это была плохая фильтрация 12 В. Я добавил еще несколько конденсаторов на 12 В, и теперь он работает без проблем.

Wow thats an awesome finding ! . I wish if there was a way to find if these capacitors are faulty or not without being short.

I believe desoldering those 12v filter caps and measuring them with ESR meter would help

but still it would require alot of effort to desolder random caps one by one and check their capacity.

exactly, in fact too much effort ;)

There isn't that much effort in desoldering capacitor, you could just replace all of them, no need to measure the bad one, decent caps are pretty cheap. I have another 2060 with similar issue on which I'm gonna replace all 12v capacitor too.