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.

[ATTACH]249920[/ATTACH]

[ATTACH]249921[/ATTACH]

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.

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

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...

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...