Rb433 power off and dont back.

Hardware MikroTik hardware general
1

hello,

There is a base with 5 boards , 3xrb433 and 2x rb333. After some time 3 of them just go down all 433 looks like no power going to board. The PSU is 24v 0.8 A also there is a UPS and they are powered up by jack socet no PoE. When I take off power for 20 seconds and plug back they starting like be nothing happen. mostly of them working like PTP in NS2. Cards are R52. The worse is that will be take main bandwith from our provider and location is far away. Any Ideas what to do ??? I have a lot of rb333 and few rb433 and nothing happen with them. Someone said me to use better PSU with more than 1 A. Or try use some laptop charger like a PSU. Is that good way to resolve this problem ??? many thanks!

Regards

Mikal

2

Welcome Mikal.

When you say: “..433 looks like no power going to board.” Do you mean it doesn’t respond, there is no LED’s activity, or both?

Are the 3 rb433’s drawing power from the same UPS or outlet as the rb333’s?

3

Hi,

Thanks for response :slight_smile:
Yes there is no LED’s activity … and they take power from this same UPS.

4

Do they all drop at the same time? Create a Netwatch to email you or log when they go down if your not sure.

I would suggest putting them on separate UPS, just for testing. If that doesn’t work you may want to try different PSU.

I wish I could offer more suggestions.

5

there is an issue like this with some of the rb400 devices, please contact your supplier for more info on replacement/repair.

6

Ok
So definitly I just change that for rb333, but dont have now :frowning: … and also put better PSU. I hope so that stop my problem. thanks anyway for some sugestion !

regards

Mikal

7

Hi,

To close topic .. I change a PSu to 24v 1,6 A and that still up!!!

regards

Mikal

8

Hi, I have a similar problem with a RB433 with PoE. When we have a little blackout about 2 seconds, the RB it isn´t able to start again. It seems to be a electrical issue and it happens in 50 RB433 so it´s not a isolate problem.

9

I have this EXACT problem with RB450’s.

I have a dozen or so in the field and, maybe, 3 or 4 of them behave this way. If you loose power briefly, they do not come back up.

No lights… no sign of life.

Is there a field engineering fix I can apply?? solder a drain resistor or something somewhere??

10

ask your distributor, they will help

11

http://forum.routerboard.com/viewtopic.php?f=3&t=3868

12

I have exactly the same problem with 433ah board.
Is there any solution about the problem apart from ups?