Page 1 of 1
Raspberry pi 3 running way too hot
Posted: Sun Aug 27, 2017 11:13 am
by scriptkiddy
So i got my Raspberry pi 3 thursday this week, is set it up with raspbian with noobs because that was what already was on the sd card i got with the pi, it did set up just fine, but then i turned it off and after a little time i booted it up again, now it had troubles booting, i was getting way too hot to boot, and therefore failed to boot, i could get it to boot by blowing on the cpu to remove som heat.
When i finnaly got it booted i thought i would measure the temprature, so i ran the /opt/vc/bin/vcgencmd measure_temp command, it said 105 degrees celsius and i was only running a terminal and the cpu usage was like 5% max.
is there a problem with my pi? please help me here it is really frustrating...
Re: Raspberry pi 3 running way too hot
Posted: Sun Aug 27, 2017 12:15 pm
by SurferTim
My RPi3 runs at around 49 degrees celsius, but I always use a heatsink on my CPU.
Re: Raspberry pi 3 running way too hot
Posted: Sun Aug 27, 2017 12:48 pm
by scriptkiddy
SurferTim wrote: ↑Sun Aug 27, 2017 12:15 pm
My RPi3 runs at around 49 degrees celsius, but I always use a heatsink on my CPU.
Hm... do you know where i can write to raspberry pi about a product issue?
Re: Raspberry pi 3 running way too hot
Posted: Sun Aug 27, 2017 12:52 pm
by SurferTim
Maybe you should contact your supplier about the issue.
Re: Raspberry pi 3 running way too hot
Posted: Sun Aug 27, 2017 1:33 pm
by rpiMike
How are you powering your Pi3 ? Have you connected anything to the GPIO pins ?
You could try temporarily carefully placing a copper coin on the CPU to expel some heat.
I would also flash the latest Raspbian Stretch with Desktop to the sd card.
I use heatsinks on all of my Pi3's
Re: Raspberry pi 3 running way too hot
Posted: Sun Aug 27, 2017 1:59 pm
by mahjongg
Sounds like you have damaged your PI's SOC. For example with static electricity or by connecting more than 4 Volt on a GPIO .
I would return it to the reseller.
It becomes hot because the SOC developed an internal short circuit.
Without a heat sink a PI would not normally reach such a high temperature in no normal case.
Re: Raspberry pi 3 running way too hot
Posted: Wed Aug 30, 2017 11:24 am
by scriptkiddy
mahjongg wrote: ↑Sun Aug 27, 2017 1:59 pm
Sounds like you have damaged your PI's SOC. For example with static electricity or by connecting more than 4 Volt on a GPIO .
I would return it to the reseller.
It becomes hot because the SOC developed an internal short circuit.
Without a heat sink a PI would not normally reach such a high temperature in no normal case.
Thanks a lot, i will return it to the seller
Re: Raspberry pi 3 running way too hot
Posted: Sun Sep 03, 2017 10:12 am
by decca
Hi,
When I login to my PI3 by SHH, I receive the nice login message with the current temperature:
Temperature........: CPU: 65°C/149°F GPU: 65°C/149°F
Is this too high or do I need a heat sink?
Re: Raspberry pi 3 running way too hot
Posted: Sun Sep 03, 2017 11:36 am
by DougieLawson
It's not too high, 85°C is too high.
Adding a heatsink may help depending on what workload you want to run.
Re: Raspberry pi 3 running way too hot
Posted: Mon Oct 23, 2017 5:19 pm
by phillytim
My Pi typically idles around 60-63'C, yet QUICKLY hits 80'C when I'd fire up Facebook on Chromium.
Like, almost in a heartbeat. Definitely appears to need a heatsink, if I ever do any sustained server activity.
Re: Raspberry pi 3 running way too hot
Posted: Mon Oct 23, 2017 5:51 pm
by gkaiseril
Is your Pi in a case?
Re: Raspberry pi 3 running way too hot
Posted: Mon Oct 23, 2017 7:05 pm
by phillytim
gkaiseril wrote: ↑Mon Oct 23, 2017 5:51 pm
Is your Pi in a case?
Yes, the Raspberry Pi org standard one, the white & red.
Re: Raspberry pi 3 running way too hot
Posted: Mon Oct 23, 2017 8:16 pm
by Imperf3kt
Even outside a case, the Pi3b will easily shoot to ~70-80℃ if you use the internet on it.
I remedy the issue with a small heatsink and as extra measure, I added a fan that only turns on if the Pi hits ~65℃.
So far so good.
I wish people would just accept the fact the Pi gets hot under NORMAL use.
Re: Raspberry pi 3 running way too hot
Posted: Mon Oct 23, 2017 8:31 pm
by phillytim
Cool, go to know - thank you!
Only problem is that the Pi throttles down and web browsing becomes practically unresponsive once it hits 80'.
I just started measuring the temps, and may well throw a heatsink on it.
Re: Raspberry pi 3 running way too hot
Posted: Mon Oct 23, 2017 8:46 pm
by bensimmo
Try a Microsoft solution when they find they always get hot under load.
https://microsoft.github.io/ELL/tutoria ... erry-Pi-3/
(Or The Register's take on it ongoing many new sites
https://www.theregister.co.uk/2017/10/1 ... erry_pi_3/ )
Re: Raspberry pi 3 running way too hot
Posted: Wed Oct 25, 2017 6:27 pm
by phillytim
It would be awesome if someone could sell the Microsoft-spec as a complete kit, as not many of us have 3D-printers.
Re: Raspberry pi 3 running way too hot
Posted: Wed Oct 25, 2017 7:31 pm
by jahboater
Imperf3kt wrote: ↑Mon Oct 23, 2017 8:16 pm
I wish people would just accept the fact the Pi gets hot under NORMAL use.
Mine doesn't, I have to run an artificial stress test to get it to throttle back.
A large software build with all four cores flat out doesn't cause throttling.
Code: Select all
pi@Pi3:~ $ vcgencmd measure_temp
temp=34.9'C
pi@Pi3:~ $
Idle, 21C ambient, a small (15mm cube) heatsink, no fan, in free air.
Its been running for months.
I would get the latest Raspbian.
Re: Raspberry pi 3 running way too hot
Posted: Wed Oct 25, 2017 8:56 pm
by Imperf3kt
jahboater wrote: ↑Wed Oct 25, 2017 7:31 pm
Imperf3kt wrote: ↑Mon Oct 23, 2017 8:16 pm
I wish people would just accept the fact the Pi gets hot under NORMAL use.
Mine doesn't, I have to run an artificial stress test to get it to throttle back.
A large software build with all four cores flat out doesn't cause throttling.
Code: Select all
pi@Pi3:~ $ vcgencmd measure_temp
temp=34.9'C
pi@Pi3:~ $
Idle, 21C ambient, a small (15mm cube) heatsink, no fan, in free air.
Its been running for months.
I would get the latest Raspbian.
I have always used the latest version.
Perhaps it is just my Pis then because sitting at 5% CPU load with a YouTube video (@720p) playing through Chromium, I see temperatures between 70 and 80 degrees.
Take your heatsink off and tell me your Pi stays under 40℃
Re: Raspberry pi 3 running way too hot
Posted: Wed Oct 25, 2017 9:41 pm
by davidcoton
From the earliest posts about Pi3Bs, it was clear that:
- The power performance of Pi3Bs varies
- Some Pi3Bs will reach thermal throttling under a fairly light load
- Other Pi3Bs can reach a farly heavy load without thermal throttling.
I have not seen any posts which rationalise this -- no way of distinguishing in advance which individual Pis overheat easily, or why there is such a variation. But there are just too many reports to dismiss as "unusual" or due to some unexplained environmental or configuration issue.
To turn round my opening list:
- Some Pi3Bs need heatsinks to stay cool under a relatively light load
- Under heavy load or higher ambient temperatures, a heatsink and fan may be necessary
- Other Pi3Bs never need a fan, and only need a heatsink when heavily loaded.
YMMV