Linksys E1200 v2 - Inoperable with all port lights on

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deltavee
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Joined: 02 Jul 2021
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PostPosted: Fri Jul 02, 2021 16:35    Post subject: Linksys E1200 v2 - Inoperable with all port lights on Reply with quote
Flashed an old Linksys E1200 (V2) to work in bridge mode about a year ago.
Followed the instructions as given on the main DD-WRT website.
Everything working fine until yesterday.
On power-up, all the rear lights are ON and dimmed, even when the ports are empty.
Router is not working and is not accessible via the browser.
Reset button does nothing.

Any suggestions would be appreciated, thank you.
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tli
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Joined: 06 Mar 2019
Posts: 65

PostPosted: Fri Jul 02, 2021 18:07    Post subject: Re: Dead Power Adapter? Reply with quote
deltavee wrote:
...
On power-up, all the rear lights are ON and dimmed, even when the ports are empty.
Router is not working and is not accessible via the browser.
Reset button does nothing.

Any suggestions would be appreciated, thank you.


Check the power adapter with a multimeter as it could've become faulty. Try using another compatible working power adapter as this seems like a hardware failure.
kernel-panic69
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Joined: 08 May 2018
Posts: 14125
Location: Texas, USA

PostPosted: Fri Jul 02, 2021 18:51    Post subject: Reply with quote
See note 6 of the Peacock thread. Could be power adapter, could also be bad caps on the router SoC board or a combination of both.

See the device wiki for recovery information if everything checks good.

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deltavee
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PostPosted: Sat Jul 03, 2021 8:03    Post subject: Re: Dead Power Adapter? Reply with quote
tli wrote:
Check the power adapter with a multimeter as it could've become faulty. Try using another compatible working power adapter as this seems like a hardware failure.


Thanks. Original adapter outputs about 11.5v with a DVM. I tried the 12v adapter from the main router (also a Linksys) and that did not work either. All lights on (but dimmed) and the router inoperable.

Also, to rule out a defective power adapter, I used it to power-up the main router and that device works fine. So the problem appears to be with the router itself.


Last edited by deltavee on Sat Jul 03, 2021 8:15; edited 1 time in total
deltavee
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Joined: 02 Jul 2021
Posts: 6

PostPosted: Sat Jul 03, 2021 8:06    Post subject: Reply with quote
kernel-panic69 wrote:
See note 6 of the Peacock thread. Could be power adapter, could also be bad caps on the router SoC board or a combination of both.

See the device wiki for recovery information if everything checks good.


Thank you. I will run the checks as per Note 6 and post any results here.
tedm
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Joined: 13 Mar 2009
Posts: 554

PostPosted: Sat Jul 03, 2021 23:57    Post subject: Reply with quote
I still think might be the power adapter. I've bought a few of those at Goodwill and I sometimes have to go through 3-4 12v adapters out of the bins before finding one that will work. When one doesn't work all the lights go dim. Fortunately those routers are cheap as dirt.
deltavee
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Joined: 02 Jul 2021
Posts: 6

PostPosted: Mon Jul 05, 2021 7:10    Post subject: Reply with quote
Recap: Flashed E1200 stops working after 1 year of use. No changes made to the operating environment, software or hardware in use. OEM power adaptor tested with another router (OK), and another OEM power adaptor tested with E1200 (fail).

Using Note 6 of the Peacock Thread:

1. Hard 30-30-30 reset
2. Computer static IP set to 192.168.1.1 (router 192.168.1.1)
3. Ping -t 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data:
Reply from 192.168.0.102: Destination host unreachable.

If it is useful, I noticed that the Ethernet Adaptor icon in Network Connections remained greyed out even when the router was powered on.
Also, the Troubleshooter diagnosed the problem as "Plug an Ethernet cable into the network adaptor Ethernet".
This would suggest that the router is invisible to the computer.

Any further advice or suggestions would be appreciated : )
blkt
DD-WRT Guru


Joined: 20 Jan 2019
Posts: 5660

PostPosted: Mon Jul 05, 2021 8:33    Post subject: Reply with quote
kernel-panic69 wrote:
could also be bad caps
deltavee wrote:
Recap

Also, consider a newer router.
kernel-panic69
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Joined: 08 May 2018
Posts: 14125
Location: Texas, USA

PostPosted: Mon Jul 05, 2021 9:05    Post subject: Reply with quote
deltavee wrote:
Pinging 192.168.1.1 with 32 bytes of data:
Reply from 192.168.0.102: Destination host unreachable.

Why did you set your PC to 192.168.1.1 and not 192.168.1.2 (or .5 or any other number in the last segement of the IP address than 1)? It looks as if your PC is still using an incorrectly assigned static IP or the last IP address it was assigned via DHCP.
Peacock Thread wrote:
If you get "destination host unreachable", you likely have your computer on a different sub-network than the one you are trying to ping. Check to make sure that you have your computer set to the same static IP subnet (eg.192.168.1.10) as the address you are trying to ping.

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deltavee
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PostPosted: Sat Jul 10, 2021 21:56    Post subject: Reply with quote
Thank you for the follow-up.

If I set the static IP to anything but 192.168.1.1, the return is:

Pinging 192.168.1.1 with 32 bytes of data:
PING: transmit failed. General failure.

The above returns on .10, .2 and .5

I also tried the above static IP sequence on another machine, just to rule out an issue with the hardware on this desktop. Same result.
kernel-panic69
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Joined: 08 May 2018
Posts: 14125
Location: Texas, USA

PostPosted: Sat Jul 10, 2021 22:51    Post subject: Reply with quote
Check your ethernet cables; If they all test good with an actual cable tester, then this may be hardware failure, or again, bad capacitors. Power supply won't make a bit of difference if a cable is bad, shorted, or if the router got hit by a power spike.
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tli
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Joined: 06 Mar 2019
Posts: 65

PostPosted: Sun Jul 11, 2021 1:41    Post subject: Reply with quote
Given that many areas in the US have been experiencing heatwaves with unusually high temperatures and duration, overheating damage to routers are quite possible--besides the potential damage from increased likelihood of power fluctuations.
deltavee
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Joined: 02 Jul 2021
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PostPosted: Sun Jul 11, 2021 9:27    Post subject: Reply with quote
Thank you for the continued support. I did try another cable but no joy.

If we cannot communicate with the router, then as per Note 6 the options for revival diminish rapidly.

This is the 2nd tour of duty for this router. It has already served for many years as a primary device. I was happy to save it from the bin by being able to flash it with DD-WRT software and use it in bridge mode for another year. But I guess it is finally worn out.

It could be the capacitors, and while I have the tools and expertise to diagnose and repair, I simply do not have the time.

Thank you to everyone for their helpful suggestions and advice.
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