ministation board heat

[knevor]

has anyone noticed a heat issue with the ministation boards? As soon as the board is powered up, several components are extremely hot. I have tried this on two boards and have had the same result

[knevor]

swapped out power supply to a 12v instead of 18v and the board is running fine. No heat issues.

[UBNT-Mike.Ford]

Thanks for the update.

Mike

[wireless_guy]

Thanks for the update.

Mike

Hi Mike,

seems that not much discussion on ministation. Only the heat issue.

I'm making my WISP box with dual wan and plan to use ministation for my Radio module on Lan side. is it still the same with bullets 30 clients and more that that will degrade in performance? My system is 24V so if it has temp issue on 18V..I'm scratching my head now since the specs is max at 24V. I always connect my module to ta 5 meter cable just to give a drop for that 24V.

BTW, how much does it cost for the miniS. Is open WRT supported?

By the way, UBNT rocks!!!

Thanks

Wireless_guy

[wireless_guy]

Thanks for the update.

Mike

Hi Mike,

seems that not much discussion on ministation. Only the heat issue.

I'm making my WISP box with dual wan and plan to use ministation for my Radio module on Lan side. is it still the same with bullets 30 clients and more that that will degrade in performance? My system is 24V so if it has temp issue on 18V..I'm scratching my head now since the specs is max at 24V. I always connect my module to ta 5 meter cable just to give a drop for that 24V.

BTW, how much does it cost for the miniS. Is open WRT supported?

By the way, UBNT rocks!!!

Thanks

Wireless_guy

[ATADAMS]

We have noticed the same problem with heat issues on the Ministation2. Using the POE injector at 18v and 12v did not seem to make any difference in the heat that was given off by the board.

[UBNT-Mike.Ford]

Thanks for the update.

Mike

Hi Mike,

seems that not much discussion on ministation. Only the heat issue.

I'm making my WISP box with dual wan and plan to use ministation for my Radio module on Lan side. is it still the same with bullets 30 clients and more that that will degrade in performance? My system is 24V so if it has temp issue on 18V..I'm scratching my head now since the specs is max at 24V. I always connect my module to ta 5 meter cable just to give a drop for that 24V.

BTW, how much does it cost for the miniS. Is open WRT supported?

By the way, UBNT rocks!!!

Thanks

Wireless_guy

Hey,

OpenWRT is supported as the units operates identical to our LiteStation 2 boards.

Thanks,

Mike

[rasm]

I received some Ubiquiti boards today among them the MiniStation and I have to say that the first thing I noticed was the high temperature of the board. A rough temperature measurement yields 45ºC on the top side. At first I though it was OK, but then I lost LAN and WLAN connection to the board (the power led is still lit) and I don't think the board will return to life. This cannot be expected behaviour, the board just keeps getting hotter and hotter. I'm powering the board using the power jack with the 12V AC-Adapter of a NanoStation2.

[ATADAMS]

Hey Mike, any updates on this ministation heat issue? Thanks in advance!

[misteria06]

Thanks for the information

[onetechct]

Is possible to install air os on ministation 2 ?

[UBNT-Mike.Ford]

Is possible to install air os on ministation 2 ?


Hello,

AirOS comes on the device from the factory.

Thanks,

Mike

[steve-sydney]

Im here about heat issues as well,

Im finding that this ls2 in a sealed enclosure is resetting itself on hot days.

my setup is 2 radios in a single enclosure with both ac adapters - think removing the ac adapters and putting them in a separate enclosure will do the trick?

[UBNT-Mike.Ford]

Im here about heat issues as well,

Im finding that this ls2 in a sealed enclosure is resetting itself on hot days.

my setup is 2 radios in a single enclosure with both ac adapters - think removing the ac adapters and putting them in a separate enclosure will do the trick?


Hello,

It is a possiblitiy, however the boards should not be overheating in the first place.

thanks,

[UBNT-Mike.Ford]

Hey Guys,

What voltage PoE's are you using with the Ministation?

Thanks,

[steve-sydney]

Hi Mike,

Ive gone back to the site and replaced the board.
2 days later we had another really hot day and its constantly rebooting.
We dont need to use poe as we have 2 x 12v adapters in the enclosure.
we are going to try some ventilation ports and hope that solves the problem otherwise we will have to fabricate a cover to shade the enclosure.
interestingly our other wifi board is not overheating in the same enclosure.

[rakpatel]

Adapter in Enclosure ? what you mean? Only Ministation in the enclosure is ideal situation and adapter should be outside I mean you power it up through CAT 5 or 6 through PoE also change PS to 18 V or 15 V

[steve-sydney]

Adapter in Enclosure ? what you mean? Only Ministation in the enclosure is ideal situation and adapter should be outside I mean you power it up through CAT 5 or 6 through PoE also change PS to 18 V or 15 V

I mean I have an enclosure with 240v coming in to it, and inside that enclosure is,
1 x LS2 - (self explanatory) connected to 12 dbi omni (the omni is not in the enclosure)
1 x über wap (one half of a point to point link) connected to a directional antenna (this antenna is also not in the enclosure)
2 x 240vac - 12vdc power adapters these provide power for the LS2 and über wap.

the über wap is one half of a link receiving a signal from another location and is plugged in to the LS2 which then acts as an access point.

It makes absolutely no sense to run poe for a distance of 30cm.

an update to what ive done to try and solve the LS2 overheating issue.
added 2 breather tubes one at bottom of enclosure and one at top to allow for thermal flow. Moved the LS2 board to the bottom of the enclosure - it was mounted at the top. Replaced both the transformer style power adapters with 1 x electronic power adapter.

we are scheduled for another very hot day this friday, hope these 3 changes help the ls2 deal with the heat.
IMO the ls2's are a little heat sensitive, the über waps have been installed in much harsher environments without heat issues.

[rakpatel]

Steve Do you mean

Enclouser = (TWO 12 V PS for LS and uber wap ) + LS + Uber WAP ?


Adapter in enclouser of Radio is not in common practice. Power supply generate heat as well. If it is not SMPS based and it is transformer based than it generates even more heat.

[steve-sydney]

Steve Do you mean

Enclouser = (TWO 12 V PS for LS and uber wap ) + LS + Uber WAP ?


Adapter in enclouser of Radio is not in common practice. Power supply generate heat as well. If it is not SMPS based and it is transformer based than it generates even more heat.

yes that is the setup exactly.

the changes i made did not do the trick, in fact its gotten worse. The unit is resetting itself quite frequently now, several times an hour, even on not so hot days.

[Dave-D]

Steve: 'it makes absolutely no sense to run
PoE for a distance of 30cm'?

It makes all the sense in the world, if you
have heating issues that severe. Instead of
tinkering with 'breather tubes' and so on.

I admit if you've changed to a switching
power supply form of PoE, you've reduced
that heating because they're more efficient.
Even so, count it as 10 to 20% of the total
heat budget. Will that make the difference? Dave

[rakpatel]

Dave,

I believe PS in enclouser make more heat. It should be ouside the enclouser of Ministation. If you post picture will be helpful to suggest...

Rak

[tagno25]

We had a simmilar issue with a ministation using a Ubiquti 15v PoE it died after 3 days. When we switched it to a 5v adaptor it still runs warm, but it is still functional almost a month later (but it is now cold out). We have some of our equipment simmilar to how Steve does it and have never had heat problems. It seems that the ministation needs some heatsinks to be able to operate on more than 5 volts.

[steve-sydney]

Even so, count it as 10 to 20% of the total
heat budget. Will that make the difference? Dave

Its unlikely to make a difference as its resetting in temeratures at 30 deg and we in australia expect temps over 36 deg regularly.

replacing the board today with a 200mw über wap and looking for aftermarket firmware to handle high mac acl limits.

Steve

[UBNT-Mike.Ford]

Hey Guys,

Make sure you do not use over 12V as you can cause clipping of the regulator and cause the board to heat up.

Thanks,

Mike

[FreenetAntennas]

Hey Guys,

Make sure you do not use over 12V as you can cause clipping of the regulator and cause the board to heat up.


Mike,

There is a big discrepency between what you are saying, and the LS2 Datasheet which says: "DC Voltage rating 5-24V (18V max recommended)".

Will the datasheet be corrected?

Rob

[knevor]

How are your ministations holding up on 5v. I am having an overheating issue running on 9v. Going to swap out to 5v tomorrow, and add a heatsink when it arrives.

[jdt141]

was there ever any resolution on this heat issue? I'm seeing the LAN side drop out regularly as the device hits 36 deg C.... well within the temp spec yet still a comms loss. Thanks.