Identifying Socket 7 Mobo Inductor Coil

[SamBushman]

I have the following Motherboard: https://theretroweb.com/motherboards/s/pcchips-m560-v3.x
Last time I went to use this PC, the computer unexpectedly locked up, then became very unreliable when attempting to boot and post. After doing a visual inspection, I found some bulging capacitors. I went ahead and replaced them all. After finishing this, I then noticed the Inductor Coil next to the CPU was damaged. Specifically, the ring the wire is wrapped around has split in 2.


Reading online, it appears that air gaps in the ring will lead to worse performance evening out noise on the voltage line (something I'd expect the CPU to be sensitive to). I suppose I could try either leaving the coil alone or glueing the ring back together. I'm not excited about either of those solutions, as the ring would still be performing worse than new and IDK how bad this would impact my computer's stability. I'd prefer to buy a replacement coil.

It looks like I could invest in an LCR meter to measure the coil and search for a spec-equivalent replacement (I assume I'd need to match the uH rating, size, and mounting method?). However, I don't know if those measurements would be skewed by the fact that the inner ring is damaged. So not being able to find any schematics and not being sure how/if I could derive the intended specs I'm kinda stumped how to move forward here. Do folks have any wisdom?

Thanks!

 

[Bluejets]

You could round up a replacement core by measuring the size ( ID X OD X Width) .....they are available in places online such as fleabay.....
You may have to buy a minimum of 10.
Color I think denotes whether iron or ferrite powder core, might be slight difference.
Then measure the diameter of the enamelled copper wire, (possibly available online same places) count number of turns ....
Rewind new core, refit to board, done.
Might be advisable to cut the existing windings above the board and solder new windings to there as soldering motherboards and the like can be rather testy.
No guarantee it'll fix your problems though.

 

[73's de Edd]

Sir SamBushman

I then noticed the Inductor Coil next to the CPU was damaged. Specifically, the ring the wire is wrapped around has split in 2.

My learned eye seems to view that as being a 2/3 + 1/3 division, rather than your suggested 1/2 +1/2.split
Can you take a toothpick or sharp ended bamboo skewer, along with a BRIGHT light, used closeup , and a magnifying lens to CLOSELY probe and confirm that the actual toroid core is really broken and not just having just shed that amount of its overall green epoxy coating, instead. ? ? ?

 

[Bluejets]

is really broken

Fairly certain I can see other side of the board through the "break"......

 

[73's de Edd]

Believe that is right. . . . Looking at a BEEEEEEEEEG blowup and both sides.
I never seen such in ALL of my times.

 

[Bluejets]

I never seen such in ALL of my times.

Looks like it might have been dropped (just a wild guess)