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rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 1:25 pm
by hex4
hello
My Hex Router (RB750Gr3) is stuck in powering up loop , it keeps rebooting every 6 seconds
I checked power supply and it's fine.
I have tried to reset it but with no success.
Please help
thanks
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 1:48 pm
by sebastia
Hey
Quite unfortunate
Have you tried netinstall?
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 1:57 pm
by hex4
it keeps rebooting every 6 seconds , don't think netinstall would work if the ports are reset every 6s.
I guess there is hardware failure. but need to be sure.
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 2:08 pm
by sebastia
Try don't assume...
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 3:00 pm
by CZFan
Had this before on a 951G when I did an update wrong, late, on a Friday afternoon
Netinstall saved me
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 3:09 pm
by hex4
ok , tried Netinstall , guess what , nothing ... any other suggestions ?
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 3:11 pm
by hex4
it worked last night fine ,
this morning it's stuck on powering up loop,
there was no update or anything.
hw fault ?
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 3:23 pm
by mkx
I checked power supply and it's fine.
How did you check the power supply?
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 4:36 pm
by hex4
multi meter and I have a few spare ones as I have few more mikrotik devices.
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 6:24 pm
by mkx
Under load?
Re: rb750Gr3 keeps rebooting
Posted: Sat Jan 19, 2019 10:13 pm
by hex4
I have checked just voltage with multimeter to see if the PSU is not dead , then I used other PSU from different Routerboard with same result.
Re: rb750Gr3 keeps rebooting
Posted: Sun Jan 20, 2019 1:37 am
by hex4
update : I was playing with the Netinstall and .... it's working now
just need to find what was happened.
thanks for the suggestion
Re: rb750Gr3 keeps rebooting
Posted: Sun Jan 20, 2019 5:37 am
by ukitnam
Try don't assume...
just wanted to repost this since you already have solved the problem.
Re: rb750Gr3 keeps rebooting
Posted: Sun Jan 20, 2019 1:39 pm
by hex4
few notes which can be helpful for someone with same issue ....
https://wiki.mikrotik.com/wiki/Manual:Reset_button
Starting the RouterBOARD in Netinstall mode
Or Keep holding the button for 5 more seconds until until LED turns off, then release it to make the RouterBOARD look for Netinstall servers. You can also simply keep the button pressed until the device shows up in the Netinstall program on Windows (
total 15 seconds)
then
https://wiki.mikrotik.com/wiki/Manual:Netinstall
Re: rb750Gr3 keeps rebooting
Posted: Sun Jan 20, 2019 8:45 pm
by anav
Thanks for the update and links, netinstall is not as easy the first time around and glad you found your way!
My issue was trying to connect to hard to get CapACs for netinstall and not knowing what the heck I was doing the first time.
Re: rb750Gr3 keeps rebooting
Posted: Thu Nov 21, 2019 11:14 pm
by MasteRTriX
Hi, today I upgraded routeros from 6.45.5 to 6.45.7 and router entered in a boot loop.
I tried netinstalling back to 6.45.5, 6.40.8, 6.42.12, 6.43.16, 6.44.3 and every time it flashes correctly but goes back to bootloop.
Tried also other working power supplies with no luck
Thanks in advance for any help you can provide
Edit: tried latest 6 beta and even 7 with same results. Flashed ok with netinstal but afterwards boot loop. I´m beggining to think the initial upgrade bricked it somehow, and netinstall doesn´t really do a 100% clean install.
Re: rb750Gr3 keeps rebooting
Posted: Mon Mar 30, 2020 12:56 am
by gargola
Hi @MasteRTriX
Did you find any solution? I have an RB750UPr2 that Netinstall says it worked and reboot the router, but after rebooting it, it gets again in the rebooting loop, within netinstall it can stay on for hours, so no problem there.
I have tried with 6.45.6 6.45.8 and 6.4 (i think that was their firmware before getting in to this)
Best regards.
Hi, today I upgraded routeros from 6.45.5 to 6.45.7 and router entered in a boot loop.
I tried netinstalling back to 6.45.5, 6.40.8, 6.42.12, 6.43.16, 6.44.3 and every time it flashes correctly but goes back to bootloop.
Tried also other working power supplies with no luck
Thanks in advance for any help you can provide
Edit: tried latest 6 beta and even 7 with same results. Flashed ok with netinstal but afterwards boot loop. I´m beggining to think the initial upgrade bricked it somehow, and netinstall doesn´t really do a 100% clean install.