ASUS RT-AC86U Issue/Dead (Eth4 LED Only)

ntec

New Around Here
If you were able to replace this IC, you perhaps can diagnose what’s wrong. There is a way to test boot the router with this IC removed.
I removed the ic and still no go so something else is definitely wrong.
 

thelonelycoder

Part of the Furniture
Well, my trusted development router just died with the weak ETH4 led symptom.
RIP, you started as main router and then were delegated to developing amtm and Diversion when the RT-AX88U arrived.
 

jsbeddow

Senior Member
Well, my trusted development router just died with the weak ETH4 led symptom.
RIP, you started as main router and then were delegated to developing amtm and Diversion when the RT-AX88U arrived.
I almost reached for the "like" button, but that didn't seem appropriate at all.

Now I just need to convince the CFO (my wife) that we need to replace our currently functioning RT-AC86U with a newer router....yeah well, because it is likely to die, probably imminently. That's going to go over really well, I can see it now.
 

thelonelycoder

Part of the Furniture
I almost reached for the "like" button, but that didn't seem appropriate at all.

Now I just need to convince the CFO (my wife) that we need to replace our currently functioning RT-AC86U with a newer router....yeah well, because it is likely to die, probably imminently. That's going to go over really well, I can see it now.
Mine was of the first 86U series that came out, it worked fine for multiple years. Interestingly, the outdated RT-AC87U died last year, of old age I guess. This one had a dead WAN port after a lightning hit our house. Still worked fine with one of the LAN ports used as WAN. I still have 5 working Asus routers left, the AX56U now becomes the new dev router.
 

Tech9

Part of the Furniture
The lonely coder with six five routers. This is sad. Very sad only.
 

doczenith1

Very Senior Member
Mine was of the first 86U series that came out, it worked fine for multiple years.

I also have one of the early 86U's. Three or so months ago I saw this in the log accompanied by 92C cpu temperatures.

Code:
May  9 18:27:01 kernel: thermal cooling_device1: turn off CPU#1
May  9 18:27:01 kernel: IRQ6 no longer affine to CPU1
May  9 18:27:01 kernel: IRQ28 no longer affine to CPU1
May  9 18:27:01 kernel: IRQ29 no longer affine to CPU1
May  9 18:27:01 kernel: IRQ30 no longer affine to CPU1
May  9 18:27:07 kernel: process 2565 (vpnserver1) no longer affine to cpu1
May  9 18:29:41 kernel: thermal cooling_device1: turn on CPU#1
May  9 18:29:41 kernel: CPU1: Booted secondary processor
May  9 18:39:01 kernel: thermal cooling_device1: turn off CPU#1
May  9 18:39:01 kernel: IRQ6 no longer affine to CPU1
May  9 18:51:45 kernel: thermal cooling_device1: turn on CPU#1
May  9 18:51:45 kernel: CPU1: Booted secondary processor
May  9 18:57:00 kernel: thermal cooling_device1: turn off CPU#1
May  9 18:57:00 kernel: IRQ6 no longer affine to CPU1
May  9 18:58:40 kernel: thermal cooling_device1: turn on CPU#1
May  9 18:58:40 kernel: CPU1: Booted secondary processor
May  9 18:59:00 (wg_manager.sh): 21032 Clients ^[[97m0^[[95m, Servers ^[[97m1
May  9 19:02:49 kernel: thermal cooling_device1: turn off CPU#1
May  9 19:02:49 kernel: IRQ6 no longer affine to CPU1

I've placed a fan behind the router and now see high 60's temperatures and no issues since.

Edit: Previous to these error messages I seem to remember the cpu temp hovering in the low 80's normally.
 
Last edited:

Similar threads

Latest threads

Sign Up For SNBForums Daily Digest

Get an update of what's new every day delivered to your mailbox. Sign up here!
Top