[blacksmith]

Is there any way that I could improve the cooling for the Odyssey card in my Tezro? Adding a radial/axial fan or any other way?
Quite often my Tezro is giving me a warning regarding the temperature reaching the threshold. It is stabilizing right away but I am not very comfortable with the situation.


Happy New Year, cool girls and boys!
Blacksmith

[weblacky]

Hmmm.....pleae give us L1 output for env. I'm having trouble believing this. Remember the DS1780 for graphics env monitoring is on the graphics card itself.

Use an additional tempreture probe from a multimeter or IR thermal gun device to prove these temps.  I'd more believe your PSU and ENV are breaking down.  The only reasons I say this is:

1. You have no associated FAN RPM issues or comment..and yet a temp "stabilizes"...how?
2. While not impossible, I've not heard of a Tezro having VPro graphics overheat sisues when everything is running correctly (FAN RPMs, PSU, All covers on, etc).
3. I've seen damaged VPro DS1780 IC before on a graphics card...they also there no direct fan to control for graphics tied to the VPro DS1780, if you're not having another Fan issues somewhere else...#1 still comes to mind.
4. Wacky voltager ripple can be "a thing" for Tezro, myself and others have low-voltage VRM damage that may or may not be related to PSU health...haven't finished that yet.


I have rebuilt Tezro PSUs and bench ran them...but I've not yet taken the plunge to actually place one IN a Tezro as well as finish fixing my 1.8V VRM issue.  I will hopefully get to it this coming year (2024), Tezro needs a LOT of 3.3v power to run and the XIO slot provides that for the VPro graphics cards. Just an FYI, I don't have too many "extra" Tezro PSUs but I have a few.  When I'm done rebuilding I will be selling at least 1.  If I can get a core exchange for an "old but seems working" Tezro PSU I can make a deal. This is still in research phase but is coming.  If you're in a such a boat, powering down and wating for PSUs to become available may be the safer bet.

Gather more info but it sounds (on its face) more like a DS1780 going bad than I believe the senario it's describing...but please gather instruments to verify that temp condition outside the system monitoring, my gut says...you'll likely find that the DS1780 is off. 

If you have no other symptoms that's where I would start.

[blacksmith]

Here is a picture I took couple days ago. The temperature for Odyssey goes to 51C, then the fan goes over 80% for a second or so, and then goes down. Today I've use it most of the day and nothing happened. The fan stayed at 60% all the time. Now I wonder if not the fan might be at the end of the life.

[weblacky]

Here is a picture I took couple days ago. The temperature for Odyssey goes to 51C, then the fan goes over 80% for a second or so, and then goes down. Today I've use it most of the day and nothing happened. The fan stayed at 60% all the time. Now I wonder if not the fan might be at the end of the life.

How much time has been between these two events?
Could you do this..do another ENV quickly at startup, then show the alert like you have then immediately do ANOTHER env to show temps right after alert of stablization.

I found something VERY similar but with NO further work (other than removing a DM3 board) on it here: https://gainos.org/~elf/sgi/nekonomicon/...306/1.html


Yeah, something's not right... It sounds like the fan is not the problem but likely the reactionary symptom. I am more thinking you probably have skew on the temperature sensing on your DS1780 IC on your VPro card.  A shift that fast shouldn't be able to happen with the fan cooling it down. 


I think as long as your fans don't sound like they have bearing problems or other types of grinding or slowness that they are okay. After all they're not even shown as running at max speed on the L1.   If your fans were running abnormally high or there's a discrepancy between the RPM and the actual fan speed then I agree with you.

I think you still need to verify this sudden heating with some sort of thermometer or temperature sensing device you can get in there during this time. If these temperatures are actually real, then this just doesn't make sense as to why you're having a sudden burst like that that occurs as part of a warning. I wouldn't expect the starting of a normal windowing system and all that to pull an actual warning from the L1. That's why I'm thinking that the rate of change on this temperature is beyond reality and so may be based on some form of sensor problem.

Please try to find more information associated with it if you and if you can prove or disapprove of the temperature increase via another method. If you find the temperature is not syncing up on the high side I would say you should have the chip replaced on your graphics card and see if it does anything. It certainly can't get worse.

I've not seen inside the heat sinks on these cards yet but perhaps this might also indicate a breakdown of the material used on the heat sink (from thermal cycling a high-end card) and maybe we need to either use those new carbon sheets or silicone transfer pads in lieu of the old material. I'll actually have some data on within about six months or so. So hopefully we'll know more about refurbishing these cards and improving heat transfer to the heat sinks.

[Irinikus]

My Tezro gives me the same warnings during the summer months.

The temperature is always stabilised by the system ramping the fan speeds up. (So the cooling system is operating as it should.)

51 Degrees Celsius is a rather low temperature threshold in my opinion.

It does indeed get rather warm down here in Southern Africa during the summer months!

[chulofiasco]

Mine has also done this. I added another fan using a BS fan controller I got off of Amazon.

The power is pulled from the CDROM connector, and it blows into the graphics box.

I agree with Irinikus, it is a rather low threshold for it to begin to whine...

[weblacky]

My Tezro gives me the same warnings during the summer months.

The temperature is always stabilised by the system ramping the fan speeds up. (So the cooling system is operating as it should.)

51 Degrees Celsius is a rather low temperature threshold in my opinion.

It does indeed get rather warm down here in Southern Africa during the summer months!

I think we have a description problem here before anything else. The term "stabilizes right away" does not indicate if the fans ramp down after they ramp up or once they ramp up they stay at the new, higher, speed. If it's the latter that I totally agree with the two other comments on this thread. I read this to mean that the VPro starts out at 36°C then quickly becomes 51°C. The system puts an alert out about it and ramps up the associated fan. After a few moments the fan is placed back to its original speed with the overheat problem suddenly resolved.

Am I accurate in my description or have I misunderstood what was posted?