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problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 7:37 am
by dreammbc
problem RouterBOARD 751U-2HnD not boot after update
please help me iam upgrade my router board 751U-2HnD v5.11 but it dosn't work
led power and ehternet 2 is working but router dos't work
how can i fixed this problem
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 11:02 am
by skl
try reset router
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 1:55 pm
by dreammbc
i reset router but no respond
and i run netinstall but didn't find the router
the problem
i wrong update routerboard 751U-2HnD different software rb4xx
please help me how can i used netinstall to install the orignal sofware
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 1:57 pm
by normis
rb400 software is identical to rb751 software, the files are the same.
do any LED lights blink or flash?
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 2:05 pm
by dreammbc
i used v3.2 but after ugrade the router didn't work
led power and led ethernet 2 is light
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 2:18 pm
by normis
this device doesn't work with v3.2
use Netinstall + v5.11
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 2:21 pm
by dreammbc
how can i used net install?
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 2:26 pm
by normis
http://wiki.mikrotik.com/wiki/Manual:Netinstall
To load from running Netinstall servwer, hold the front panel button during boot time, until LED turns off (not blinking, but turns off!), then release it to make the RouterBOARD look for Netinstall servers.
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 2:33 pm
by dreammbc
what do you mean the front panel button ?
the rest buttom
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Wed Jan 18, 2012 4:40 pm
by dreammbc
please help me
what do you mean the front panel button ?
are you mean the reset button
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Thu Jan 19, 2012 7:44 am
by normis
yes, reset button. there is only one button on the device. hard to miss
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Thu Jan 19, 2012 12:31 pm
by dreammbc
thankyou
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Thu Jan 19, 2012 10:06 pm
by praiafrances
I have a problem all led of my router are blinking and it don't work. what can I do ?
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Fri Feb 24, 2012 3:35 pm
by sergfox
When the power RB751G-2HnD serial 2F7A0121FEFF / 148, Power LED flash and 1-5, with a frequency of 2 times per second.
What does this mean? And how to fix it?
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Tue Apr 10, 2012 12:34 am
by infowebprod
Hi, I have the exact same thing: Power and 1-5 LEDs are flashing with a frequency of 2 times per second.
I also hear a subte clicl each time they flash. looks like an issue with initialisation of the router itself
Is there a known bug? I'm unable to get it to boot.
This started this PM while I wasnt even at home.
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Tue Apr 10, 2012 1:48 am
by infowebprod
looks like this is a power supply failure...replaced it got it working fine... so the power supply failing after 3 days...
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Thu Apr 26, 2012 8:17 am
by willy
Beware, and please do not buy: This device power supply very bad, 8 device from 10 devices come with this problem! Dear MT! Please fix it!
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Thu Apr 26, 2012 8:57 am
by normis
Beware, and please do not buy: This device power supply very bad, 8 device from 10 devices come with this problem! Dear MT! Please fix it!
Please don't spread misinformation! This has nothing to do with power adapter. If you have some problems, email support.
Re: problem RouterBOARD 751U-2HnD not boot after update
Posted: Thu Apr 26, 2012 1:03 pm
by winet
i have never had any problems with MT product's power supplies. they are so far so good