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  1. #1

    TL-WDR4300: 2.4GHz band repeated signal failure, but 5GHz band just fine

    Model : TL-WDR4300

    Hardware Version : WDR4300 v1 00000000

    Firmware Version : 3.14.3 Build 151104 Rel.45874n

    ISP : Comcast Xfinity

    Greetings...

    Please help me determine if I have a defective router:

    Problem: After keeping this router in its box, brand new, I finally set it up about 3 months ago. Since then, it has been increasingly losing 2.4GHz band functionality at random times. This is observed by a rapidly deteriorating connection quality (~20 seconds) followed by the 2.4GHz band disappearing from the list of available wifi access points completely. To restore 2.4GHz functionality, I have to restart the router (power down, power up).

    Observations: The 5GHz band remains stable, regardless of whether the 2.4GHz band fails or not. In fact, when the 2.4GHz band fails, I use my iPhone to log in to the router through the 5GHz band to restart it if I'm feeling too lazy to walk up stairs and press the power switch. Unfortunately the laptops in this home are too old to "see" a 5GHz band, so it's essential the 2.4GHz band performs reliably.

    Also, the 2.4GHz band fails at least 3 times per day, sometimes minutes apart, but sometimes a few hours apart. This usually happens in the middle of the night, possibly because the temperature is 10*F lower. If I had to guess a pattern, I would say the failures occur whenever the house cools down at night, say ~70*F to ~60*F, but this is no excuse for this to happen.

    Things I've tried:

    1) Factory reset
    2) Upgrading to latest firmware (3.14.3 Build 150518 Rel.70901n)
    3) Factory reset again
    3) 2.4GHz unreliable and failing even when router is used in factory default settings

    I'm tempted to go back to the cheapo $25 Belkin router I had previously. It never had trivial problems such as this, and I expect far better from a product I paid nearly $80 for.

    Any help/insight you could provide would be super helpful. Otherwise, I'm gonna fight with the manufacturer to send me a replacement, despite that it's been in the shrink wrap for a year. This is unacceptable performance.

    FYI Current 2.4GHz settings:
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    Last edited by Culdee; 02-08-2017 at 17:06.

  2. #2
    Administrator tplink has disabled reputation
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    Hi,

    May I know how many clients you connect the 2.4GHz wifi of WDR4300?
    And what about the model No. of wifi adapter on your computer?
    A suggestion to try, login the management page of the router, and then go to NAT, disable Hardware NAT function and reboot the router.
    After, test again if this issue still exists.

  3. #3
    Quote Originally Posted by tplink View Post
    Hi,

    May I know how many clients you connect the 2.4GHz wifi of WDR4300?
    And what about the model No. of wifi adapter on your computer?
    A suggestion to try, login the management page of the router, and then go to NAT, disable Hardware NAT function and reboot the router.
    After, test again if this issue still exists.
    Hi...thanks for your response.

    Currently there are 7 clients connected to the 2.4GHz band, and none connected to the 5GHz band. There are 3 laptops, and all 3 lose connectivity when the 2.4GHz band fails. It completely disappears on all laptops.

    The model of the wifi adapter on my laptop is a Intel(R) WiFi Link 1000 BGN with driver version 15.11.0.7.

    I'll try disabling that hardware NAT function you described. But how would that help?
    Last edited by Culdee; 02-10-2017 at 07:50.

  4. #4
    Bump...

    So disabling the hardware NAT function did not solve the issue. The router continues to drop the 2.4GHz band beyond detection by any device.

    This is absolutely ridiculous. I was trying to remotely assist my parents with a PowerPoint revision for a legal case and the internet kept cutting out, so I would lose the remote connection. It just blows my mind that an expensive router could be this finicky. Like I said really cheapo routers don't even do this (I'm using one right now).

    I can't see how this could be anything other than a defective device. It was never dropped or banged around. It just started doing this right out of the box more and more frequently.

  5. #5
    I'm having the same issue with the Archer C1200 I bought three months ago. 5ghz works great but 2.4ghz has connection issues. I emailed support and I'm waiting to hear back. I suspect it's a hardware issue.

  6. #6
    I have this same problem with the Archer C5. I've been trying for months and nothing works. 5ghz is amazing, 2.4 is always terrible.

  7. #7
    Junior Member Andrei9 is on a distinguished road
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    Please help!
    Same problem here...
    model TL-WDR4300
    Firmware Version: 3.15.1 Build 160831 Rel.56887n
    Hardware Version: WDR4300 v1 00000000

    5ghz ok, but 2.4 is losing internet connection randomly...

    it is very annoying

  8. #8
    Thanks for your response. If you went through the same troubleshooting steps as myself and the issue is still occurring, then you have a defective device according to their tech support (I've been communicating with them via email and support ticket). They will replace it free of charge if you purchased within 2 years ago.

  9. #9
    Junior Member SchauDK is on a distinguished road
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    Same issue here on a Archer C2600.

  10. #10
    Sorry to hear that. Recently I've had to reboot mine twice within half an hour. That's unacceptable.

    So if you've ensured you have the most recent firmware, factory reset, etc etc...then you have a defective device according to the tech support I spoke with. You need to create a support ticket here. They'll run you through the usual boiler plate troubleshooting, and then if none of that works, they should start the process to replace your device.

  11. #11
    Junior Member wjacobs359 is on a distinguished road
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    2 tl-wdr4300 lose 2.4ghz

    I have 2 of these TL-WDR4300 routers and both of them lose 2.4ghz connection only. I have tried to remove security, change the channel. I can't upgrade firmware because the router has newer firmware than what is on the website. not sure how that works, but I am not the only one that noticed that. I am looking now to replace them with something that has good range for my 2000 sq ft, 2 floor house. any Recommendation on fixing this issue or suggestions for a better router with good range?

  12. #12
    Same problem, at 2.4ghz, the connection is super slow, even to slow for a wireless scan of documents, loses connection repeatedly, impossible to work with, even my old Linksys does this better,
    The 5GHZ seems to be working fine though.
    Could the problem be with the antennas ?

  13. #13
    Quote Originally Posted by Marco1970 View Post
    Same problem, at 2.4ghz, the connection is super slow, even to slow for a wireless scan of documents, loses connection repeatedly, impossible to work with, even my old Linksys does this better,
    The 5GHZ seems to be working fine though.
    Could the problem be with the antennas ?
    Hey Marco...if you're having the same symptoms as I did, then you have a defective device. I already went through weeks of troubleshooting with TP-Link and they're techs were unable to fix the issue. If it's within 3 years of purchase, you can get it replaced under warranty, but you'll still have to go through all the diagnosis steps with the tech support to prove it.

  14. #14
    Quote Originally Posted by Culdee View Post
    Hey Marco...if you're having the same symptoms as I did, then you have a defective device. I already went through weeks of troubleshooting with TP-Link and they're techs were unable to fix the issue. If it's within 3 years of purchase, you can get it replaced under warranty, but you'll still have to go through all the diagnosis steps with the tech support to prove it.
    I'm pretty sure it's out of warranty, since i'm sure i had it for longer then 3 years.
    It's only lately that it became so slow and instable.
    I know it's not the antennas, since i ordered and tried the 9dbi antennas on it, so that theory is out the door.
    Unless i can find a way to fix the problem, so is the router.
    I allready replaced it with the AC1750, the Archer C7, V2, for wireless MAC filtering.
    So far, it works great for a used router.
    Not so happy with the AC1200, Archer C5, v1, also a used router, which i can't login to nor won't simply reset.
    So now i'm trying to work out how to flash it in failsafe mode, so i got a used backup, if it works, in case i really can't get the N750 to work properly again.

  15. #15
    Quote Originally Posted by Marco1970 View Post
    I'm pretty sure it's out of warranty, since i'm sure i had it for longer then 3 years.
    It's only lately that it became so slow and instable.
    I know it's not the antennas, since i ordered and tried the 9dbi antennas on it, so that theory is out the door.
    Unless i can find a way to fix the problem, so is the router.
    I allready replaced it with the AC1750, the Archer C7, V2, for wireless MAC filtering.
    So far, it works great for a used router.
    Not so happy with the AC1200, Archer C5, v1, also a used router, which i can't login to nor won't simply reset.
    So now i'm trying to work out how to flash it in failsafe mode, so i got a used backup, if it works, in case i really can't get the N750 to work properly again.
    Sure, give it a try. I already tried all of those advanced restoration modes, flashing, installing old firmware, factory reset, etc...nothing worked. Hopefully you might have better luck than I. In any case, the N750 is a fundamentally flawed model.


 

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