You could use PC analyser.

Although it doesnt do much for you in terms of actually fixing the machine.
You see, i have this very M919 (Do you have 1 VLB slot?) and this little diagnostic board does not show any code at all!

I assume it is the BIOS in my case.

What about the jumpers ?

yep, mine has the vlb slot. i have been working with it and tried multiple cpu's (AM486dx2 80, i486dx266) as well as ram and nada. im not sure about the jumpers though, I will look at them.

No POST code is usually CPU or BIOS. Check that the CPU is getting voltage, a wrongful insertion of a 486 chip can kill the Vcore supply. I've seen it happen.

Rev. v3.4B/F ? Just to be sure. You can see it next to the Keyboard connector.

I would like to say that this board kicked my ass. 😵 Very Powerful. Be careful.

OK

What does not kill you, make you strong. So let me share one tip:

You must configure JP6, JP7, JP13, JP8 A-B, JP9 A-C, JP10 A-C, JP11, JP14 and JP12 for Intel and AMD
The graphic is here with me.

Don't even think about installing a COAST module on that brown slot. They are different from Pentium COAST modules.

Don't use EDO RAM (This is not fatal. In fact, you can try it, but we dont want marginal performance right now).

-Clear CMOS jumper (J4) must be in "internal battery positive" and "Connect to CMOS" position.
(Pin 2 and Pin 3 are closed)

Win this time?

Excuse man, what the hell is nada ? Sounds familiar...

Yes, it is rev v3.4B/F. I will set those jumpers up accordingly (I have to run up and back down the stairs now, my "smart"phone just kicked the bucket) and report back. I did read here http://th2chips.freeservers.com/m919/unoff/m919.html that those boards of that revision have PCI video issues! Also what graphic are you using? And nada is spanish for "nothing" I believe.

133MHz wrote:

No POST code is usually CPU or BIOS. Check that the CPU is getting voltage, a wrongful insertion of a 486 chip can kill the Vcore supply. I've seen it happen.

So, my board can be revived like a Phoenix?

I would never install a CPU in wrong position, but maybe the previous owner did it.
What about if he poorly connected the AT power pins? ( I did it once and was fatal, couldnt save it).

I am glad you are trying to help, but i have a multimeter and i'm a dumbass. Oh god.
"Check that the CPU is getting voltage" is chinese for me.
Once i checked the PSU voltages and they all matched and thats it.

ahendricks18 wrote:

Yes, it is rev v3.4B/F. I will set those jumpers up accordingly (I have to run up and back down the stairs now, my "smart"phone just kicked the bucket) and report back.

"Have no Fear, Frasco is here" 😁
Briefly read this site containing great info and i was right. NO COAST, NO EDO for now.

Regarding those video issues, i'm not affected. Besides my diagnostic card would bring some kind of code if only the video card was faulty. Thanks anyway...

Nada is nothing in portuguese too. Obrigado, então pela força ! 😈 😈 😈

Frasco wrote:

So, my board can be revived like a Phoenix?

Maybe, if it happens to have the problem I described.

Frasco wrote:

What about if he poorly connected the AT power pins? ( I did it once and was fatal, couldnt save it).

I've done it by accident several times and never damaged the boards nor the power supplies, such is luck. 😀

Frasco wrote:

"Check that the CPU is getting voltage" is chinese for me.
Once i checked the PSU voltages and they all matched and thats it.

You're almost there then. It's pretty much the same, only you test the voltage right at the CPU socket, without the chip in its place.

Put the positive probe of the meter in any of the holes marked in red, and the negative probe into the black wire of one of the Molex connectors.

Frasco wrote:

"Check that the CPU is getting voltage" is chinese for me.
Once i checked the PSU voltages and they all matched and thats it.

I will do that. The probe seems bigger...

Thanks for the effort, no, really.

Something went wrong.

So i installed a paper clip in the socket and the probe goes to the molex (i got VCC=5V, which sounds bad to me)
During the process, i saw "dirt" lying close to the socket. For my surprise, that was a path that goes from socket 3 to JP14, which in his turn is critical for select CPU type

Can't do anything about it.
No matter. You will see in the near future that i really care about a ALD VL4200 Rev 3.3 (featuring 3 VLB slots and Windows BIOS...oh my baby... no...no....noooooooooooo 😢 ).

Back to the M919. I can take pictures of the affected area (the path looks good under the socket).

This place is heaven because by giving away you get love in return.
The M919 VIP is diagnosed. You are the man 😁 😁

I could kiss you.