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Author Topic: Guruplug overheating?  (Read 71494 times)

varkey

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Re: Guruplug overheating?
« Reply #15 on: 27 May 2010, 01:36:00 pm »

^ I didn't buy it from NewIt, got it from GlobalScale.
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Epeli

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Re: Guruplug overheating?
« Reply #16 on: 28 May 2010, 06:46:00 pm »

I just took some readings of my new Guruplug plus (from newit) with an infrared thermometer.
You can read the results in another thread  here http://www.newit.co.uk/forum/index.php/topic,323.msg1701.html#msg1701

Edit:
I'm copying the results here, since this is the right thread for those

Room temperature: 25°C

Top of the plug: 47°C
Bottom: 58°C
sides: 60-70°C !!

I'm using the EU power kit. So the input voltage is around AC 230v and  frequency is 50Hz.
« Last Edit: 28 May 2010, 07:52:01 pm by Epeli »
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kinnison

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Re: Guruplug overheating?
« Reply #17 on: 28 May 2010, 08:00:03 pm »

ouch!! I only bought my sheeva 7 days ago, and was wondering if I should have got a guru instead.. now I am glad I didn't!
I only need it for small scale stuff, one usb, 100Mb network is fine for me, and what attracted me to the Sheeva was the very small wattage it uses, letting me run it 24hrs a day without worrying about my electricity bill.
At the moment, it's been running about 3 days straight.. from touch alone I would guess it's about 35-40C on the sides (the warmest) - that's warmer than my router, but not hot enough for me to begin to worry.
If the guru is getting anything like as hot as I've heard, that would be a worry for me - plus presumably it's using more electricity as well, which at the end of the day was the MAIN reason I bought a sheeva (I have redunant PC's that would happily become linux servers with 300W PSUs)

Chris.
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alessio

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Re: Guruplug overheating?
« Reply #18 on: 28 May 2010, 08:01:04 pm »

Epeli, thanks for the data. I was afraid of this scenario before receiving GP.
Now it looks that the problems with power supply and overheating were not solved.
At least for this batch...

I will make  temperature pictures with thermovision camera and make power measurements.
But not before until Monday when I get back to my lab.

PS Can anyone please suggest how to easily set CPU to 100%?
I guess I can do this with a simple bash script.
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Epeli

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Re: Guruplug overheating?
« Reply #19 on: 28 May 2010, 08:09:43 pm »

PS Can anyone please suggest how to easily set CPU to 100%?
I guess I can do this with a simple bash script.

Here's my recipe:
Code: [Select]
sheevaplug-debian:~# python -c "while True: [i**10.0 for i in range(10000)]"

Exit with Ctrl+c
« Last Edit: 28 May 2010, 08:11:47 pm by Epeli »
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Sakis3G

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    • Sakis3G blog
Re: Guruplug overheating?
« Reply #20 on: 28 May 2010, 08:21:22 pm »

Code: [Select]
apt-get install stress
man stress
(Example from man page: stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 10s)
Really good one (and multi-threaded). Can stress more things than just CPU (in case it is something else causing heat).
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sk.akties

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Re: Guruplug overheating?
« Reply #21 on: 28 May 2010, 08:36:54 pm »

Posted again in the right thread  :-\

I got mine this afternoon and plugged it in half an hour later.
Now it is running for more than 5 hours and it gets only hand warm.

I have kept it running idle and with BT/Wireless on.

That "hand warm" is ofcourse a temperature I did not measure exactly but at least it is less than
the measures stated above I can assure you, otherwise I could not hold it in my hand.
The bottom of the plug is cooler.

So what could explain these differences?

Mine is a EU Guruplug Plus / 230V / idle

Will try tomorrow with a full load and post these results.

I decoupled mine just to be sure for the night and it cooled down in a few minutes to normal.
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Cloaked Alien

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Re: Guruplug overheating?
« Reply #22 on: 29 May 2010, 02:23:56 am »

Does this damn thing have any sensors that can be read?

Mine's running fairly hot, a bit higher than hand warm. Right now it's rsyncing my backup archives so we'll see if it's still working tomorrow =)
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lettuja

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Re: Guruplug overheating?
« Reply #23 on: 29 May 2010, 02:48:43 pm »

My GuruPlugPlus gets also burning hot while just idling @ 230V/50Hz.

I tried also the gigabit ethernet and GuruPlugPlus doesn't reboot immediately when connecting to other gigabit devices but after a few minutes plug seams dead.

Could someone open the case of GuruPlug and GuruPlugPlus to confirm that the psu is the source of heating. As it will void the warranty could New IT people ask manufacturer to send us pictures of inside of guruplug?

It would be so interesting to see what is inside. ;)
« Last Edit: 29 May 2010, 11:57:55 pm by lettuja »
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rjkm

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Re: Guruplug overheating?
« Reply #24 on: 29 May 2010, 03:50:49 pm »

I got a normal GuruPlug today. It does not get very hot, just warm.

But I am getting random reboots every few minutes. Network is connected to gigabit.
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henk55

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Re: Guruplug overheating?
« Reply #25 on: 29 May 2010, 03:57:40 pm »

Quite of few and clever people has already open it.
There are already several pictures on www.

Look here what the creater of SSODS (for SqueezboxServer) did;
http://oinkzwurgl.org/guruplug

With that information I open it also the GuruPlug, the big real problem is --air ventilation--
in a dam small box here, there is a big change for really hot-spots, and building-up.

Free air temp. (open BOX) just below 60 degrees celcius already!!!
Could you image, in a closed small box what happens?

I measered the 5Volt output (230V AC) 5.170 V at the GuruPlug, on a balast resistor 4,9 Ohm  1,05 Amps at 5,15 Volt,
so secundair voltage is a bit to HIGH!

So I could choose 30 day warranty lost, or the Guruplug 'lost' for repair within 30 days for the -HEAT- problem!
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Cloaked Alien

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Re: Guruplug overheating?
« Reply #26 on: 29 May 2010, 08:04:34 pm »

What about an USB-fan? ;)
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Cloaked Alien

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Re: Guruplug overheating?
« Reply #27 on: 29 May 2010, 09:28:09 pm »

What about an USB-fan? ;)
Seriously though. Even though mine isn't scorching hot I know what kind of effect on lifespan these heating issues can have.

I actually don't mind cutting mine up and fitting a fan to it, as long as that IS the best approach. I'm fully aware that I've bought myself development equipment and not a consumer product.

.. Although you'd think they'd actually test to see if the gigabit ports works in gigabit mode..
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darek

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Re: Guruplug overheating?
« Reply #28 on: 29 May 2010, 09:38:51 pm »

Ohhh,

so, i need to buy also 240 to 110 converter, fan, and do all this stuff to make GP work as It should work out of the box? WTF im asking? I bought GP for home server, now I'm reading that there's fire possibility? No way I'll leave it alone in my flat.
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trampjuice

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Re: Guruplug overheating?
« Reply #29 on: 30 May 2010, 10:20:53 am »

In summary then:
1. The PSU Overheats and melts down.
2. Independent of the PSU, the GURUPLUG system board overheats and the unit is killed.

Quite a problem from the posts of people here who have just received their units.  Getting one of these Guruplugs in the next month.

Whats the best thing to do?

1. Wait till it overheats and then return to to base?
2. Use a better PSU (5v 3A) and engineer a CPU fan into it to keep the system board cool, but totally voiding the warrenty.

Question is : How long is the warranty we get from newit? It has to be the same as provided from Globalscale or Newit have a liability. Although with UK/EU consumer law their is likely a difference from the US customers staring at melted black blobs on the plugcomputer site.
 
« Last Edit: 30 May 2010, 10:30:11 am by trampjuice »
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