Re: Dead ASUS ROG STRIX X299-E Gaming Motherboard

Well, what other options were there? The 0.3v were also on the battery tab, so that would indicate a short on a component that was powered by the battery. The PCH is powered directly by the battery. I tried to trace the path from the battery to the PCH using a boardview from another x299 board and a PDF schematic of a ASUS x299 board. All the components were ok. I even desoldered a few resistors that seemed suspicious but when out of circuit they measured ok. And in the end when I saw that the voltage at the battery tab changed with...

Re: Dead ASUS ROG STRIX X299-E Gaming Motherboard

I mean, that is my opinion based on several friends that had repeated X299 motherboard failures and the amount of bad X299 and older X99 boards I came across on a local site similar to ebay. Like I said, I couldn't find much information on specialty forums so I may be wrong

Re: Dead ASUS ROG STRIX X299-E Gaming Motherboard

Ok, so after a bit more measuring and trying to see where else could the 3.3v from battery could be shorted, the voltage began to drop even more. I took out the thermal camera and started to look around the board. I noticed the chipset had like an aura around the die, very faint but it was warmer.
So I unplugged the board, I put a heatsink on the ICH to cool it down as best as I could, plugged it back in and then measured the voltage again. Now it was 0.5v.
I removed the heatsink and started heating the ICH and voltage...

Hello. I am having some trouble with a X299 motherboard. I did some searches and I found very little info about these X299 chipset motherboards. It's a bit strange because they are known to be unreliable and I expected to find lots of posts. So I decided to make a thread and ask the experts for help
Ok, here is the info I have.
The board is completely dead, nothing happens when I try to start it up.
I stripped it down and started measuring. I have 3.3v on the power on switch pin, so that is ok. I also found 1v on a coil near the sata ports and 3.3v on the coil next to the...

Re: Help disabling a vcore phase on a MSI X570 Carbon - I have schematics + boardview

At first i found the mosfet connected to choke 4 burned and welded to the board. I had to grind away the short and the board started up.

After I installed the heatsink and messed up more of the board (pressure caused another short) I had to grind away and also remove the mosfet connected to choke 5.
From that moment I no longer had vcore

The +2 phases that power the SOC are working (choke 6 and 7)

I read the datasheet that said to ground isen...

Re: Help disabling a vcore phase on a MSI X570 Carbon - I have schematics + boardview

Hi. I was referring to the pwm pins on the ir35201 controller.
From factory they use:
1->5 pwm pins for vcore - used with ir3598 doublers to make up 10 phases
chokes 15 14 13 12 10 9 2 3 4 5 - weird numbering but that is the order

6 pwm pin is unused

7 and 8 pwm pins (the +2 phases, second loop) used with the same ir3598 but set up as dual that drives two dual mosfets
choke 6 and 7

Hello.
Does anyone have any experience with disabling a power phase on the CPU vrm?
The controller is IR35201 6+2 phases. It only uses 5 phases and the pins for pwm and feedback on the 6'th phase are not populated (no traces).
I got the board with a burned mosfet which I removed along with a part of the pcb. I dremelled away the short as best I could and the board started up fine without the vrm heatsink.
I then put some sealant and left it for two days to completely dry. I suspect the pressure from the thermal pads on the heatsink compressed the layers so when I started...

Hello.
I have an XFX Radeon RX480 8GB Black with artifacting.





You can see in the pictures how it behaves. From what I read this would be caused by a bad memory chip or bad memory controller in the core.
I found this video with a RX580 that has a similar problem.

https://www.youtube.com/watch?v=VWDYmCmIde4

He got lucky and the bad memory chip was shorted out and he could easily identify it. My problem is that the memory rail has 20ohm so that seems ok.
He mentions at about the 2 minute mark a guy that...

Re: New Members - please post your introductions here

Hello guys.
My name is Bogdan and I am from Romania.
I mainly do automotive electric and electronic repairs but recently I tried playing around with GPU's. I managed to fix two of them and the whole experience was surprisingly satisfying, so I bought some more. After watching lots of videos and reading different forums I ended up registering on the electronic repair forum everyone regards as the best: badcaps.net
I am still a newbie in this field so I guess I will need help for a while and after that I...