I have this board too and it works just fine with two SL6BY and one SL5XL procesors. Did you reset mobo settings?

It's without a battery at the moment. I also reflashed the BIOS. Just four red leds and no post 🙁

My mobo won't start when battery went out of power, maybe this is the problem

I can try it. But it starts with Coppermine cpu just fine tho.

Are you sure that the cpu's are not damaged? Maybe try reseting bios settings or different board

Tualatins are all good and tested with different boards - Asus TUSL2-c, Abit ST6, VH6T... All work fine, just these two MSI have problems...

Just tested with CR2032 installed - the same, no boot. Also swaped the ATX PSU and all the same. No go 🙁

Google found this (yesterday):
https://forums.anandtech.com/threads/msi-694t … alatin.1258616/

It seems pretty weird to me 😕

Maybe you should try recapping the board.

kixs wrote:

Tualatins are all good and tested with different boards - Asus TUSL2-c, Abit ST6, VH6T... All work fine, just these two MSI have […]
Show full quote

Tualatins are all good and tested with different boards - Asus TUSL2-c, Abit ST6, VH6T... All work fine, just these two MSI have problems...

Just tested with CR2032 installed - the same, no boot. Also swaped the ATX PSU and all the same. No go 🙁

Google found this (yesterday):
https://forums.anandtech.com/threads/msi-694t … alatin.1258616/

It seems pretty weird to me 😕

I think it's a bit odd that the one on anandtech had this problem back in 2004, and here you are, 13 years later.
Do you happen to be using the same PSU for testing both your MSI boards? If this is the case, you might want to try out a different PSU, also because this is much easier and faster then changing the caps on both boards only to find out this is not the problem.

It might be that these MSI boards are more sensitive to issues with the PSU compared to other Tualatin boards (this is only an assumption though).

I forgot about that, my 694T is very sensitive to PSU. Once have problems with registry error message when instaling via4in1 drivers. When i change PSU all problem were gone and whole unit was much faster

I've tested it with two different PSU's... I can repeat with another.

I'll be darned! Took my newest old ATX PSU - infamous LC Power 420W and it boots with Celeron 1200 - amazing 😁

Switched to P3-S 1.4GHz and done some OC'ing... it boots at 155FSB = 1633MHz. I don't think this particular cpu has any more juice in it 😉

Thanks guys for the tip. I always test with at least two different PSU's when something isn't right... If it wasn't for your last post BigDaddyM I certainly wouldn't go for the 3rd one 🤣

I'll test the other board later...

The other board works too 😀

But it makes me wonder why? Other PSUs had worked with all my boards so far? Are these MSI somehow defect? What could be wrong? Capactiors look fine on the outside. Or are the PSUs actually bad - these are from early 2000?

I'm glad i could help. If Tetrium would not mention about PSU I would forget about it 😀 Can you write what power supplies you used?

Here is a picture of 4 PSU's tested with MSI board. All generic brands.

They are all tested and had no problems so far. That's why I wonder why would MSI boards refuse to work with Tualatin CPU and work just fine with Coppermine CPU 😕

Label: status, year made

Since the Tuallys use a lower voltage but seem to draw a similar amount power to the C-mines they probably draw a higher current which puts more stress on the VRM and if the input quality to the VRM is bad it makes that job even harder.

kixs wrote:

I'll be darned! Took my newest old ATX PSU - infamous LC Power 420W and it boots with Celeron 1200 - amazing :D […]
Show full quote

I'll be darned! Took my newest old ATX PSU - infamous LC Power 420W and it boots with Celeron 1200 - amazing 😁

Switched to P3-S 1.4GHz and done some OC'ing... it boots at 155FSB = 1633MHz. I don't think this particular cpu has any more juice in it 😉

Thanks guys for the tip. I always test with at least two different PSU's when something isn't right... If it wasn't for your last post BigDaddyM I certainly wouldn't go for the 3rd one 🤣

I'll test the other board later...

BigDaddyM wrote:

I'm glad i could help. If Tetrium would not mention about PSU I would forget about it 😀 Can you write what power supplies you used?

yw, both of you 😀

The point of this forum is also to learn from eachother, so we can make eachother better and improve due to one another 😀

kixs wrote:

Here is a picture of 4 PSU's tested with MSI board. All generic brands. […]
Show full quote

Here is a picture of 4 PSU's tested with MSI board. All generic brands.

They are all tested and had no problems so far. That's why I wonder why would MSI boards refuse to work with Tualatin CPU and work just fine with Coppermine CPU 😕

Label: status, year made

Tbh...I wouldn't use any of the 4 you have there and I'm not really surprised these PSUs are having issues. These kinda look cheap and it would be a waste if one of these cheaper PSUs would fry a Tualatin board (Tualatin boards were always a lot less common then ordinary Coppermine boards).
Btw...I remember having had an MSI on my workbench years ago and I also could not get it to POST. I didn't know about these issues back then, but I didn't toss the board anyway (was some MSI s478 i865 board, so I was kinda disappointed when it wouldn't POST).

If you like, pop the cases off those PSUs and post some pictures on the Bust a Myth thread.