PS3 PS3 Temperature issues - Staying at 255 degrees celsius

[snkplkn]

The 32ºC of the RSX doesnt looks real either, thats like the human body temperaure... kind of thing when you touch something with your finger and you feel nothing (in other words you are touching something that is at the same temperature than your finger)

Is imposible for a PS3 to run that low

RSX 32c temp is real. We have winter here and room Temp is around 17-18c. When i start my PS3 from cold, RSX is 25c and it slowly rises and stabilize around 35c. In winter i can play any game at Fan speed only 30% & Temps of RSX & CELL won't rise above 60c.

In summer, i have to use up to 43% fan speed to keep RSX & CELL below 70c. Room Temp in summer is 28-30c.

 

[wrx884]

RSX 32c temp is real. We have winter here and room Temp is around 17-18c. When i start my PS3 from cold, RSX is 25c and it slowly rises and stabilize around 35c. In winter i can play any game at Fan speed only 30% & Temps of RSX & CELL won't rise above 60c.

In summer, i have to use up to 43% fan speed to keep RSX & CELL below 70c. Room Temp in summer is 28-30c.

Im going to say it would have to be -17* to get that low temps? other wise im almost certain u could just put thermal gun on the back of the vents and still get a higher reading. Remember ur not meant to be using any sorter fan controls when giving temp readings other wise its a false read.

 

[snkplkn]

Cold boot. Starting PS3 from rest - 25c

i will get readings at syscon and some specific fan speeds and post here.

 

[snkplkn]

PS3 cold boot at Room Temp 16.5c idle on XMB, all temps using using CFU
CELL - 27c, RSX - 21c


Kept speed at Syscon for 30 Min (fan speed 20%)
Cell - 65c, RSX - 56c (after 30 min of idling)

Changed speed to 30%
Cell - 47c, RSX - 39c (45 min of idling)

Changed fan speed to 43%
Cell - 40c, RSX - 33c (45 min of idling)





Raising fan speed to max for a few seconds make RSX below 30c but i did not try to push for this test.

 

[snkplkn]

Im going to say it would have to be -17* to get that low temps? other wise im almost certain u could just put thermal gun on the back of the vents and still get a higher reading. Remember ur not meant to be using any sorter fan controls when giving temp readings other wise its a false read.

The original poster has taken photo with CFU at Max speed. And its perfectly reasonable for RSX to go to 32c or even below 30c at such high speed. It all depends upon room temp.

@sandungas

My Nvidia 450 GTS on PC is running at 22c Temp at 41% fan speed.

 

[habib]

It could be an error of ps3 software reading in a signed value which would mean your ps3 is running at -128c. But it's not. You probably fried the temperature sensors

 

[sandungas]

The original poster has taken photo with CFU at Max speed. And its perfectly reasonable for RSX to go to 32c or even below 30c at such high speed. It all depends upon room temp.

@sandungas

My Nvidia 450 GTS on PC is running at 22c Temp at 41% fan speed.

Ok, i didnt realized in the screenshot when he was inside CFU he was using mode = 0 (max speed)
I thought he was in (factory) syscon mode, in other words... all custom code related with fancontrol disabled

So the 32ºC could be real, and the problem only affects CPU readings

 

[snkplkn]

You probably fried the temperature sensors

yes. If Multiman, CFU & webman (don't run webman & CFU simultaneously) are all giving wrong readings, then his CELL sensor has gone bad.

This is the first time i have seen such case.


Edit - The original poster delidded his CELL. Delidding is risky job & can create problems. Some users have experienced YLOD few days after delidding when they thought that job was successful. Many users have hard bricked their PS3 during delidding.

Its possible that CELL sensors failed due to delidding.

 

[sandungas]

There are more components in between the thermal sensors and syscon, the squematic is like this:

CELL thermal sensor ---> thermal monitor
RSX thermal sensor ---> thermal monitor

Then... the thermal monitors are connected with syscon using a shared "2 lines bus" with a specific protocol... for simplification purposes you can think in it like USB where you can connect several USB devices in "cascade" in the same USB cable, here the thermal monitors are connected in cascade in the same "2 lines bus" and everyone of them is given an ID

CELL thermal monitor (ID=0) <=======> RSX thermal monitor (ID=1) <=======> syscon

By using a multimeter you can check the line in between CELL/RSX -------> and the thermal monitors (this is the "raw" output of the thermal sensor)
But you cant check the lines in between the thermal monitors <=======> and syscon






Edit:
Actually... now that im thinking in it... the fact that you had a correct reading from the RSX sensor it means the (shared) "2 lines bus" in between syscon and the thermal monitors is working fine

So... the only posible hardware culprits are either:
1) the thermal monitor located next to CELL
2) the BGA solder ball under CELL dedicated to the thermal sensor
3) the termal sensor itself (inside CELL)

 

[snkplkn]

What is difference between Temp sensor & Temp monitor? Aren't they same thing?

 

[ElGris]

What is difference between Temp sensor & Temp monitor? Aren't they same thing?

Sensor could be a little thermal resistor, they're used even on cellphones.
i/e: https://i.pinimg.com/originals/dd/b2/8d/ddb28d06b275e5b70c1c4285d7819c71.png

Temp monitor is just the software that read the signal of that resistor, which is mainly managed by a biggest IC, generally SMD. I don't know how it really works on fats (I have the schematics, but never read them), so maybe the thermistor is in the near area of the CELL, or inside of it

 

[wrx884]

The original poster has taken photo with CFU at Max speed. And its perfectly reasonable for RSX to go to 32c or even below 30c at such high speed. It all depends upon room temp.

@sandungas

My Nvidia 450 GTS on PC is running at 22c Temp at 41% fan speed.

As i stated if u used a fan utility its a false read because u are forcing that temp down so u cant get a true reading of what the actual temp is. how else will u know if the thermal paste is doing its job? or if its the fan doing all the work? so in other words by just using the fan to do all the work ur putting a band aid over an issue that could be present thats my point of my comment before.

 

[sandungas]

What is difference between Temp sensor & Temp monitor? Aren't they same thing?

Take a look here: https://www.psdevwiki.com/ps3/Thermal

The sensors are inside CELL and RSX, usually the CPUs and GPUs have several internal thermal sensors (latests AMD processors have tenths) but one of them is the main thermal sensor... and have a line connected to a pin of the socket... this way you can meassure that line externally and is going to tell you the exact temperature inside it

As far i know that value is just a meassure of resistance (in beteeen the line and ground), so you can meassure it with a multimeter while the machine is working and you will see how the value in the multimeter varies along time (this is a signal that the sensor is working)

And the thermal monitors are this chips with 8 pins

Are made by "Texas Instrument" brand, they takes the value from the sensor and converts it to data, that data is sent using a specific protocol in a "2 lines data bus"

That lines in between the thermal monitor chips and syscon are very well isolated inside internal layers of the motherboard to protect them from interferences (i guess like a sandwich surrounded all along by ground in other internal layers of the motherboard)
The goal of this design where the temperature data is traveling along lines that are "shielded" against interferences and uses some kind of data verification is to prevent any kind of problems when syscon is reading the temperatures... they put effort and money in it, and is a good solution

Also, is made for accuracy... if you meassure the resistance of something that is connected at the other side of long lines you are getting the resistance of the lines too
But with this design the distance in between the thermal monitors and syscon doesnt matters

 

[Plumpz]

My temp for idle
Cpu 75c
Rsx 35c

I was wondering why is my cpu so high everyone saying that the highest idle is suppose to be around 60 just want to know what I can do to fix it I don't really play much games on it as it gets super super loud plan on doing some ventilation mods but don't know how much of a difference that would make

 

[microfortune]

Hi,

I was wondering if you the error on my CPU which I wrote about a few months ago could be related to either the CPU or the temperature sensor which @sandungas mentioned above. Would be grateful to hear your suggestions.

 

[Naked_Snake1995]

My temp for idle
Cpu 75c
Rsx 35c

I was wondering why is my cpu so high everyone saying that the highest idle is suppose to be around 60 just want to know what I can do to fix it I don't really play much games on it as it gets super super loud plan on doing some ventilation mods but don't know how much of a difference that would make

No it won't, 75°Cs on the CELL means that the TIM under the IHS and the DIE is worn out, unfortunately, that means the CELL needs a deliding, which i don't encourage you to do, unless you have any sort of experience with deliding, doing it wrong, will permanently damage your PS3, and this cannot be fixed, my advice, give it to someone experienced to do the job for you.

Sent from my G8141 using Tapatalk

 

[Arcely Ompoc]

Is my super slim ok 71C CPU 71C GPU with newly applied paste i used Gelid GC Extreme

 

[sandungas]

Hi,

I was wondering if you the error on my CPU which I wrote about a few months ago could be related to either the CPU or the temperature sensor which @sandungas mentioned above. Would be grateful to hear your suggestions.

Is really a very rare problem, having 255ºC on CELL is imposible
Btw, 255 (decimal) is = 0xFF (hexadecimal)
In other words, is the max value you can store in 1 byte, you PS3 is displaying that because is displaying the value 0xFF as a fallback.... but is not real

You should take a look at the thermal monitor chips from the photos i posted before, maybe there is something burned near them... or some scratch cutting a line

But this is very confusing, it makes me think that maybe the cause is a software problem... the syscon chip is supposed to "monitor" the temperature values at all times... if at some point syscon finds a 0xFF (like the one you are having) it would trigger all alarms and would shut down the PS3 automatically
Your PS3 is not shutting down.... so from the point of view of your syscon everything is fine

 

[ElGris]

Is my super slim ok 71C CPU 71C GPU with newly applied paste i used Gelid GC Extreme

If it is on load (playing games) is normal depending of the ambient temperature. If not, then it's high. Btw, that thermal compound looks cheap, get at least MX-4 and watch how to apply a thing layer over the CELL.

 

[Arcely Ompoc]

If it is on load (playing games) is normal depending of the ambient temperature. If not, then it's high. Btw, that thermal compound looks cheap, get at least MX-4 and watch how to apply a thing layer over the CELL.

Thank you i might get a Thermal Grizzly Kryonaught after the community quarantine it might improve and the ambient temps are high here morning to afternoon.