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bigguns
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Can someone recommend a new heatsink for the RB800!! ASAP

Thu Jun 03, 2010 10:50 pm

Hi there,
I've noticed since closing my case (standard RB800 black case) that the temp as reached 76c - Given that there an temperature error in the firmware, I decided to measure it externally and the temp on the heatsink was at 70c.

I need to keep the unit in the case, or upgrade it to rackmount or something, but can someone recommend a bigger heatsink.

P.S MK team - please release some kind of system addon to help with the heat.
 
mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Fri Jun 04, 2010 7:50 am

we are also waiting
 
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sergejs
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Fri Jun 04, 2010 10:09 am

Temperature reports and monitoring them by SNMP should be fixed at MikroTik RouterOs 4.10 version.
 
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normis
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Fri Jun 04, 2010 10:11 am

don't forget to upgrade the bootloader as well, it has some important fixes for v4.10
No answer to your question? How to write posts
 
mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Sat Jun 05, 2010 9:15 am

Hi there,
I've noticed since closing my case (standard RB800 black case) that the temp as reached 76c - Given that there an temperature error in the firmware, I decided to measure it externally and the temp on the heatsink was at 70c.

I need to keep the unit in the case, or upgrade it to rackmount or something, but can someone recommend a bigger heatsink.

P.S MK team - please release some kind of system addon to help with the heat.

To Normis
i dont understand this
this rb was tested with a thermometer and the temperature was 70 degrees and the question was about a heatsink
But the answer was to upgrade to new ros
what is the problem with mikrotik can they not admit that there is a problem with the rb800
we will return our Rb800 to the supplier and not buy any until we get an answer
 
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normis
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Mon Jun 07, 2010 7:57 am

Just the temperature reading alone doesn't indicate that there is a problem. It's normal for these to become hot, 70C is fine for them. Are there any signs of problems that you think are related to the temperature?
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mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Mon Jun 07, 2010 8:41 am

at the moment it is cold outside (16c) and we have no problems (cpu is running at 56c)
3 days ago it was 21c outside and the cpu was running at 71c and the rb just disconnected
then we have to switch off power and wait for the temeprature of the cpu to go down to 65c and then it will work again
when the cpu gets to 71c it disconnects again and we have to disconnect power and wait
if you can not see that this is an cpu overheating problem then what about the other people that have the same problems
when we underclock the cpu to 600 it takes longer to heat up
we would like a answer soonest
thanks
 
bigguns
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Mon Jun 07, 2010 7:08 pm

I'm actually finding the system is lagging slightly - I've tried to install a larger heatsink but I can't get it to sit with any pressure thus not help the situation at all.
Could you please create a large heat sink that we could buy - just taller or something? But also airflow is a slight issue - is there anyway to increase the volts/amps to the fan?
 
mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 12:24 am

yes 3v and 5v fans are useless most fans are 12 volt
 
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 1:46 am

at the moment it is cold outside (16c) and we have no problems (cpu is running at 56c)
3 days ago it was 21c outside and the cpu was running at 71c and the rb just disconnected
then we have to switch off power and wait for the temeprature of the cpu to go down to 65c and then it will work again
when the cpu gets to 71c it disconnects again and we have to disconnect power and wait
if you can not see that this is an cpu overheating problem then what about the other people that have the same problems
when we underclock the cpu to 600 it takes longer to heat up
we would like a answer soonest
thanks
If AP heats up, at lower Hz, to the same temperature than it means that enclosure does not dissipate heat quickly enough. Larger CPU Heatsink will not help in that regard. You need to find a way to remove the heat from the enclosure at faster rate than it is created by RB800 and radios.
 
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 7:05 am

i have same problem, until now the problem never solve :shock:
 
bigguns
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 8:00 am

at the moment it is cold outside (16c) and we have no problems (cpu is running at 56c)
3 days ago it was 21c outside and the cpu was running at 71c and the rb just disconnected
then we have to switch off power and wait for the temeprature of the cpu to go down to 65c and then it will work again
when the cpu gets to 71c it disconnects again and we have to disconnect power and wait
if you can not see that this is an cpu overheating problem then what about the other people that have the same problems
when we underclock the cpu to 600 it takes longer to heat up
we would like a answer soonest
thanks
If AP heats up, at lower Hz, to the same temperature than it means that enclosure does not dissipate heat quickly enough. Larger CPU Heatsink will not help in that regard. You need to find a way to remove the heat from the enclosure at faster rate than it is created by RB800 and radios.
If you take the RB800 and the standard case (which is made for them!) the unit cannot substain the heat created. I wanted to buy a router which would not have more load than 22% and even still in its case, the temp after 4 hours reaches 85c on the cpu - at that point I didn't want it to be damaged so removed the case and the temp dropped to its current 68c.

Like you say, the heat needs to be removed or atleast drawn away. I actually think this is a manfacturing error in the fan volts and the airflow - it needs more of both!

Like I said it would be great if MK can do some kind of add-on to the board to help with this (ideally something that can work in their indoor case!)

Edit:
I've been thinking and the easiest - fastest solution would be for MK to make a new case (I understand this may not help everyone but something is better than nothing).
--- MK - if you can create a case like the Watchguard - firebox 2 (rackmountable/desktop by adding brackets), with the main's power feeding 12v power to case fans and of course power to the unit itself, the unit wouldn' need touching itself.

Please can we get a formal response and something build quickly? The last thing I or anyone needs is dead RB800's from heat - which may/may not be covered under warranty.
 
mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 4:52 pm

i agree
this is bad design from the manufactor
 
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THG
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 5:16 pm

The problem is that you put your RB800 in a closed box and think it'll work flawlessly under extreme conditions.
 
mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 5:33 pm

The problem is that you put your RB800 in a closed box and think it'll work flawlessly under extreme conditions.
Well where does MikroTik expect you to put it, outside strapped to your tower without an enclosure? And why does the RB600 work flawlessly, even wth an overclocked CPU, in the same enclosure with the same wireless cards?

Also, since when is 21 degrees ambient "extreme conditions"?
 
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THG
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 5:53 pm

Also, since when is 21 degrees ambient "extreme conditions"?
Inside the enclosure. :)

What do you have for enclosure?
 
mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 6:52 pm

Ut7 box same as for the rb600
 
bigguns
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 6:59 pm

The problem is that you put your RB800 in a closed box and think it'll work flawlessly under extreme conditions.
Personally my units are closed, but if this was a problem, surely it wouldn't have been created in the first place?
 
rmichael
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 7:41 pm

If you down-clock it to RB600 frequency it'll produce same amount of heat and should work in whatever box RB600 worked. Higher freq will require enclosures that dissipate heat at greater rate - large surface area (ribbed) and aluminum- or fan cooled case.
 
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THG
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 7:46 pm

If you down-clock it to RB600 frequency it'll produce same amount of heat and should work in whatever box RB600 worked. Higher freq will require enclosures that dissipate heat at greater rate - large surface area (ribbed) and aluminum- or fan cooled case.
Exactly!

http://www.wirelessenclosures.com
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mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jun 08, 2010 8:29 pm

we down-clocked to 600 and still have the same problem it just takes longer
the question is if a bigger box is needed with cooling why was nothing mentioned by mikrotik after they tested the rb800 in all conditions
now the people that baught the 800 find the problems after installation and they have to fix it
this is not good bussiness practise
 
bigguns
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 09, 2010 9:01 am

Clock downwards, 'may' reduce the temperatures of the unit, then if I need to do that, I'm not getting what I paid for am I?

And my units are used indoor's so, really I don't want a huge case to do this with; just something with a fan on the side to help with the airflow.
As mentioned I would really like to hear from MK about what they have in the works to do - new heatsink/new indoor case/new design/longer warranty?
 
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THG
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 09, 2010 11:35 am

I don't think this issue is due to a overheated CPU, it's designed to work up to 105,0°C. The RouterBOARD itself is designed to work up to 65,0°C. Be aware that such temperature will effective drop the MTBF to around three years.
 
bigguns
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 09, 2010 3:05 pm

I don't have any issues as of yet - but I don't like equipment running at a high temperature, due to the MTBF drops. THG can you recommend any case that is suitable for a indoor usage in an enclosed location - which can be purchased in the UK or Europe?

Ideally a rack mounted case with cooling would be the best solution but I cannot find anything suitable for the RB800.
 
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 09, 2010 3:46 pm

Ideally a rack mounted case with cooling would be the best solution but I cannot find anything suitable for the RB800.
Kam Fabrication LLC have one.

2U-UNIRB

http://www.wirelessenclosures.com/
 
bigguns
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 09, 2010 4:32 pm

Thansk I'll give them a call later on, to see if they can get one to the UK.
 
rmichael
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 09, 2010 7:31 pm

Someone on this board reported that it was more efficient (30% less heat) to power RB800 through power jack. Try 12V/2A PSU (if you're powering just the board) and see if it helps.
 
bigguns
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 09, 2010 10:19 pm

I am using the jack and it doesn't make any difference :(
 
rmichael
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 09, 2010 10:45 pm

I am using the jack and it doesn't make any difference :(
What voltage?
 
bigguns
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Thu Jun 10, 2010 8:49 am

12V/2A - adaptor - thats why the case is the only thing that I can change.
But I have noticed that when at 80% load connections start dropping.
 
bigguns
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Sun Jun 13, 2010 3:05 am

Dev's can you give you let us know what/if anything is being done about this.
 
zero
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 23, 2010 6:07 pm

hi, just some idea.... its the same as a Pc's cpu....

use heat paste and copper heatsink....

if you looking for different type and size....

best is DEEP COOL, COOLER MASTER........All shapes and sizes :D
 
mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Wed Jun 23, 2010 6:14 pm

how would you then fit the 604 daughter board on there with a bigger heatsink
 
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Sun Jun 27, 2010 7:17 pm

are you from cape town...?

there is from all shapes and sizes.....

if you need give me a ring......+27(0) 76 867 8500...... :)
 
zero
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Sun Jun 27, 2010 7:20 pm

also forgot your enclosure.....need a better one....

there are all sorts of custom made ones....

it also has nice space for airflow, all are ip65 and ip66 all weather proof

just give me a ring .... :D
 
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Sun Jun 27, 2010 11:57 pm

It's normal for these to become hot, 70C is fine
I didn't realise that Mikrotik were shipping RBs with Military Spec processors !

Wonderful for the price. Amazing how you do it really.
Don't forget to give me at least a tenner a month, every month
 
mars
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Sun Jul 04, 2010 6:18 pm

are you from cape town...?

there is from all shapes and sizes.....

if you need give me a ring......+27(0) 76 867 8500...... :)

hi
do you have a website or place i can look at the items
thanks
mars
 
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Sun Jul 04, 2010 11:58 pm

Mikrotik RB800 Heatsink has been released !

No need for a Fan !

Order code : RB-8xx-ANV
anvil.jpg
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Tue Jul 13, 2010 8:00 pm

Mikrotik RB800 Heatsink has been released !

No need for a Fan !

Order code : RB-8xx-ANV
anvil.jpg


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Re: Can someone recommend a new heatsink for the RB800!! ASA

Mon Jul 26, 2010 9:08 pm

Order code : RB-8xx-ANV
Laughed out loud for over a minute. Nice!!

Dan <><
 
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Re: Can someone recommend a new heatsink for the RB800!! ASA

Mon Jul 26, 2010 11:31 pm

That will handle a BTU or so... :lol:
Things that make you go "Hmmmmmmmm"...

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