90skidJohnny wrote:

Long story short. Using the case from a 386, to put a board for a 486 in. Case was not idea setup, a lot of modding the case t […]
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Long story short. Using the case from a 386, to put a board for a 486 in.
Case was not idea setup, a lot of modding the case to get things to line up and work.

Want to use the power supply that is already in the 386 case, however, the way the PSU connects to the mother board, while both 12 pin connects, does not fit. The way they connect is different.
Can I just desolder the 486 Motherboard connection and and 386 motherboard and swap?

Just wondering if the pin out would be the same on each?

It's almost certainly the same AT-style connector, and it almost certainly will work if you can physically make it fit, but there were a couple of different styles of AT power connectors.

This is the normal, friendly AT power connector:

This is the cheapo, terrible awful no good "AT" connector that is a real pain to work with but electrically compatible:

Bad pic, sorry. If this is what you are dealing with (and somehow I doubt it; I've only seen them on XT era boards) you can make it fit using some well-meaning violence.

Post pictures and we'll be able to tell you for sure 😉 If it doesn't look like either of the above you could possibly have a weirdo proprietary 486 OEM board, in that case you need the correct pinout to build an adapter.

That is it EXACTLY. The 486 mino im using the one you described in the top picture. thats whats on my motherboard.
The PSU I want to use plugs into the one you describe as the cheap one. So the plug just will not fit into the top mentioned one.

your saying it should tho? aka with violence?

Or would it be a better option to swap?

90skidJohnny wrote:

That is it EXACTLY. The 486 mino im using the one you described in the top picture. thats whats on my motherboard. The PSU I w […]
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That is it EXACTLY. The 486 mino im using the one you described in the top picture. thats whats on my motherboard.
The PSU I want to use plugs into the one you describe as the cheap one. So the plug just will not fit into the top mentioned one.

your saying it should tho? aka with violence?

Or would it be a better option to swap?

You'd better post pictures just to make sure, but I'm 99% sure the pinouts are going to be the same, so if you can make it physically fit you should be good.

If your power supply connector has kind of an L-shape with a lip, you need to basically cut off or sand down the lip that is in the way. Here, have an mspaint drawing:

That should enable it to fit into the socket but it will probably be quite a loose fit that needs to be secured somehow.

Here’s the issue. So the side with the lip would go towards the pins ! And cut that lip off ?

90skidJohnny wrote:

Here’s the issue. So the side with the lip would go towards the pins ! And cut that lip off ?

Yes, on the cheapo kind of connector, the connector is secured by having the lip go under a wavy piece of plastic like on the left (I don't really know what to call it in English to be honest):

On the real AT connector, like you have on your 486 board, there are keyed "slots" that go into the vertical part of the connector. This is tough to draw but you can see what the connector should look like in the photo I posted before. The lip is going to get in the way of this part. Also, since you don't have the plastic tabs that go into the slots, if you do get it to fit, it's going to be a loose fit. So you need to tape it down good or use hot glue or something.

This is kind of difficult to explain in text but hopefully you understand... 😀

You should probably post pictures of the colors of the wires coming from the power supply just to make 100% sure you put it in the right way, too.

Ok after sanding and cutting and sanding. I got it to fit. (ALS I really need to buy a rotary tool one day. How this look ?

90skidJohnny wrote:

1F282505-C615-46D4-88B3-6BDFF100B4E0.jpeg

Ok after sanding and cutting and sanding. I got it to fit. (ALS I really need to buy a rotary tool one day. How this look ?

That looks good. Colors seem to be in the right order. Power it up! 😉

(and don't blame me if anything breaks)

-*crosses fingers. Gets fire extinguisher ready. Dials 9-1.... *. Here goes nothin ! 😀

Ugh. It’s not posting. Neither on this power supply or the one one my bench. Ugh

That's unfortunate. 😢 Shouldn't be the power supply's fault at this point though.

I noticed some bent headers in your photo earlier, looks like this board may have had a rough life..?

Yah . Been working on it for awhile. Freebie but yah. I’ll have to look around and see what could be going on. Had it powered on last night. Back to it