RB750GL brandnew, not booting.

Hardware MikroTik hardware general
1

Hi,

I ordered +/- 10 RB750GL’s and am busy configuring them now.
I already got 3 of them not booting (brandnew out the box)! I tried to reset to defaults with the hardware button, but no joy. (yes, i use the right procedure) The led’s of ether 1 & 2 (where my utp is connected) are constantly blinking.
I have no access to the devices in any way. What can I do? I need them asap in the field!

kind regards


PS The ones that were working were running ROS5.2

2

try also the reset jumper on the bottom of the box, just to make sure the reset button procedure was not done incorrectly.

3

Hi Normis, thx for coming back to me.
Jumper on the bottom? I don’t see a jumper?

To reset, I hold the reset button with a pen, then plug the power and when the ACT starts flashing I release the reset button and the device resets to defaults normally.


kind regards
B

PS WIth one of the devices I noticed leaving it on the power for +15min gave me access to it.
After upgrading to ROS5.6 the device seems to act normal. Did you have issues like this before with ROS5.2 on RB750GL

4

I think he means this…

http://wiki.mikrotik.com/wiki/Manual:Password_reset

On the models with plastic cases the access hole is under one of the silicone feet.

5

Ah ok, good to know, thx.
FYI, I was able to recover them all by letting them connected to power and ethernet for 15 to 20 minutes.
After that time the router became accessible and I was able to upgrade FW to ROS5.6. I didn’t have any issues anymore after that.
I’ve never seen such behaviour on any other MT device I had in my hands in the past. Anyway, I’m happy it’s solved RMA is always a PITA :slight_smile: (I don’t mean the RMA service of MT, but the hassle that comes with it)

Kind regards,
B