My Z490 has this problem, had it from day one. It comes and goes, super annoying but doesn't break the system. 
 
 
 

CyberbrainPC
My Z490 has this problem, had it from day one. It comes and goes, super annoying but doesn't break the system. 
 
 
 

 
I know doesn’t it suck? it’s unfortunate because we want the item to work. But sending the whole motherboard to EVGA, tearing down the whole system just to potentially get another board that might fail too. Evga should replace all board that had post code failure for free. 

B0baganoosh
*snip*
I imagine the only reason it hasn't hit them incredibly hard is that a lot of people won't RMA a board just for that.

Yup. I only RMA'ed my Z490 Dark KP because I'm going to sell it. I even felt a little guilty putting in a RMA request for something so seemingly minor, but that was before I saw this thread, and before my Z590 Dark did the same thing. The 1st character of the post code display on my Z590 Dark is now nothing but a faded 'u' shape at the top half of the character, the bottom half is dead. The 2nd character is still working though.
 

I got mine in the earliest release on 6/1/2021 and having the same issue 

rblaes_99
the question is:  (1.) does it really matter if the motherboard is running great?
 
its annoying, but I wouldn't tear down and RMA for this.
 
(2.) will the RMA replacement have the same issue?

 
1. Depends on how you're using it and whether you are doing regular testing that is close to the edge of stability. If so, the POST code is helpful. That said, it is not at all necessary for proper operation of the system and the LED failing isn't going to cause any other problems.
 
2. Probably, unless they've figured it out and fixed it, all their motherboards will have a chance of this issue now. It has been reported across z490, z590, and x570 boards...so it's something they used on every board. They didn't used to have this problem and it sounds like the original z490's didn't have this problem, so something changed and is an issue now. Probably just a bad batch of LEDs, but there are other options that I've put out there above (and in another thread lol) as possibilities. We won't know unless they say something. At this point, I've counted 25 boards, mostly in this thread, but also in z490 and x570 threads, that have had this issue, so they have to know about it and I would think they'd be investigating.
 
Your statement about not wanting to tear down the build because of this is the only reason they might not know how bad it is. For their sake, I'd think they'd want to get right on it though because a lot of people will likely do what Nereus has suggested and RMA it right before they plan to sell it as long as it is still within warranty. EVGA will lose a good chunk of money from these LEDs being bad so I can't imagine that wouldn't motivate them to fix it going forward.

Just had this happen on my Z590 Dark.  Don't want to tear it down to RMA.  Just going to wait for the Z690 Dark and hope it doesn't happen there as well.

akujo
Well I guess I am officially number 28?

 
(editing this after some thought):
You're approximately the ~27th person I've seen post in the forums with this issue...but you just put the tally up to 30, as you've had 3 boards with this issue. I counted someone else who had a FTW and a Dark board with failing indicators as 2 different counts on the tally...so you get 3 counts as the tally is "how many times has the indicator failed on people's boards?" not "how many people have experienced this?". Clear as mud? TLDR: tally isn't people, it's LED failures.
 
Also, none of this is "official" though, as I don't work for EVGA and I'm just trying to keep track of how bad it is for people who find the thread.
 
It isn't a "fix" by any means, but I've decided to turn my LED indicators "off" in BIOS on my 2nd board. It still lights up with the post code during boot, but as soon as it gets past boot, it turns off. I'm just utilizing HWiNFO64 on a second monitor for temperatures.

Well… this sucks. I just got home from being away for a month, fixed the cpu and now the Debug LED is failing also. I thought highly of the Z590 Dark still shows 1’s and 4’s but any other number just dies.
much disappointment.

On a side note. Anyone know what the second debug led is for or how to activate it on the Z590 Dark?

Kyrog
Well… this sucks. I just got home from being away for a month, fixed the cpu and now the Debug LED is failing also. I thought highly of the Z590 Dark still shows 1’s and 4’s but any other number just dies.
much disappointment.

On a side note. Anyone know what the second debug led is for or how to activate it on the Z590 Dark?

Yup, from the manual;
 
 

Multi-function POST Indicator

This is a four-digit POST code reader, which displays in sets of 7-digit LED. The display can be configured to show data in regular decimal format, or hexadecimal, which means the characters available (when working as intended) are 0-9, A-F and has a cap of 255 characters.   

During POST, the left set of LEDs will display the various POST codes as they cycle through the Power On Self-Test. The POST codes are listed in the troubleshooting section on Page 160.   

After the system boots, these same set of LEDs can be set to display a hardware monitoring sensor, such as the CPU temperature in Celsius. This temperature is specifically for the CPU socket, which will typically read slightly higher than a given CPU core. To read this temp in Fahrenheit, take the value in Celsius, multiply by 9/5 (or 1.8) and add 32.

The display can be used to show additional temperatures, or can be configured in tandem with all 4 digits to provide live readings for voltages or temperatures. For example, the LEDs can be configured to read voltages, such as 1.258 or -55C for CPU temp for when you are using LN2 extreme cooling. Detailed configuration instructions for the Debug Indicator are provided on Page 156.

 
 
Then on pg 156 there's a list and some screen shots - this is what it can do:
 
 

Multifunction LED indicator
 
EVGA Z590 DARK board is equipped with a versatile display to allow real-time monitoring of system status during and after the BIOS POST process. The operating mode can be configured in the BIOS Setup in the Advanced menu, and then H/W Monitor Configuration. The Debut Port Display setting selects the OS display mode. There are multiple modes available:
 
[Temp.] CPU – displays external CPU die temperature sensor readout in real-time. Use this mode to read negative temperatures.
[Temp.] PWM – displays VRM temperature sensor readout in real-time after BIOS POST completion.
[Temp.] SYS – displays motherboard bay temperature sensors.
[Temp.] ATX 6P – display motherboard ATX 6P temperature sensors.
[Temp.] M.2 KEY-M(1) – displays M.2 KEY-M(1) temperature sensors.  
[Temp.] M.2 KEY-M(2)(3) – displays M.2 KEY-M(2)(3) temperature sensors.  
[Temp.] VDIMM VRM – display DIMM VRM temperature sensors.
[Temp.] PCH – displays PCH temperature sensors.  
[Volt.] VCore – displays CPU VCORE after BIOS POST completion.
[Volt.] Memory – displays DIMM voltage for slots (0/1/2) after BIOS POST completion.
[Volt.] VCCIO Voltage – displays I/O voltage after BIOS POST completion.
[Volt.] VSA – displays System Agent CPU voltage after BIOS POST completion.
[Volt.] VCCST – displays PCH PLL voltage after BIOS POST completion.
[Volt.] VCCPLL_OC – displays analog VCC voltage for internal clock PLL after BIOS POST completion.
POST Code – displays only BIOS POST completion.
Turn Off - completely deactivates 80Port LED display
 
The Debug Port Display menu the BIOS Setup allows you to pick specific sensors to be displayed on the 80Port.
 
These temperatures and voltages can also be seen in the BIOS setup window in real-time, for a quick overview.   

The recommended settings to display during overclocking are “[Temp.] CPU” and “[Volt.] Vcore”.



 

 
 

Add my Z590 Dark to the list of POST LED failure. Looks like it is the same as others are reporting. It is the one on the left (closest to the USB/SPI flash port).

Just wanted to add my z590 Dark bought 10/08/2021 from evga.com has had the post indicator fail starting a week after purchase, this week it went fully unusable. 

 
#29? Submitted issue to EVGA a week ago.. so far the response has been that they are looking into it.  This Z590 FTW is a recent "NEW" replacement MOBO and in it’s third week the left POST light indicator failed.   There is one dark leg (lower right) while a very very faint illumination appears on the other 6 legs that fluctuate in boot and as the CPU temp changes.  From day one both Post led’s were extremely BRIGHT.  Noticed in last few days that the FAILED indicator does come on about once a day and fully function for only a few minutes to a half hour (including the dark leg)… appearing (in a non technical prospective) that the issue causing the fail is not a post LED light burnout itself.  (What concerns me is that this has been an EVGA issue for many months.)
 
EVGA­_Z590FTW*i9 10900*Patriot Viper 32G 4400ram*EVGA_RTX3070*EVGA_DG-77case*
EVGA_750GA PS*EVGA_CLC 360mm*EVGA_Z10 KB *Samsung NVMe 970EVOPlus 500G*
WD NVMe_BLACK SN750 500G*2x HDD_BLACK 1TB*WD SSD_BLUE 1TB* Win10Pro

add me to the tally, my second digit is faded/gone, im gutted, being from Australia this isnt easy or cheap to RMA.

Came here to report that I'm experiencing the same issue. Purchased a Z590 FTW on 10/21/21. The left digit's LEDs dimmed out maybe 2 weeks ago. Thought it might've been something that would resolve itself, but given the time frame and the posts on this thread this seems to be a common issue. I'm with a lot of others who posted on here though -- I don't think it would be worth RMA'ing unless there's some assurance that the replacement board won't cause the same issue in a few months' time.

grechie
What's that take the Tally to now? 36? 

 
After mcm.himself, yes 36.