CPU/Mobo Need help identifying and replacing caps on Asus Prime X370 Pro

PradUp

Patron
So I have an Asus Prime X370 board with 2 missing capacitors:
1655269109043.jpeg


I can't find the exact model of the caps that go there, but seeing other asus board its most likely this one:
1655269281056.jpeg


If someone has the same board please let me know the exact caps that go there. Also what do those no. on the caps mean, I have a spare board, can I replace the caps with these ones:

1655269414434.jpeg
 

vishal_k

Disciple
Two questions before getting into the solution:
1) What have you done with the Motherboard?
2) Are you that professional to fix it of your own?

Now looking at the images, its a 270uf 16v aluminum polymer capacitor though exact part number is difficult to find. some of the sources are mentioned below-
https://www.tanotis.com/products/ni...um-electrolytic-capacitor-270uf-16v-20-radial
https://www.aliexpress.com/i/32514131308.html
https://www.mouser.in/ProductDetail/Panasonic/16SEPC270MX?qs=OE1iw1LrrPFnBjI9vWjyAg==
 

Slayer88

Adept
Try asking on this forum to see if someone who has the board there can send you a pic of that cap. It's an old thread so you might not get much success but worth the shot.

I tried looking at videos on YT but that cap is under the heatsink and is not visible in any of the B-Roll videos i saw.
 

PradUp

Patron
1) What have you done with the Motherboard?
Elaborate "Missing" word here.
Did they blew and you stopped using or you bought the mobo and later found missing caps?
My cousin knocked them over when he was trying to remove the heatsink, the heatsink was apparently stuck to the thermal pad and he pushed to hard or something and heatsink banged into the caps, I'm not completely sure how it happened but he has assured me that it was working before so this is the only problem with the board.
And now that it supports 5000 series I though I should try and fix it.

2) Are you that professional to fix it of your own?
Nowhere near a professional but this seems like a simple desoldering/soldering job.
Now looking at the images, its a 270uf 16v aluminum polymer capacitor though exact part number is difficult to find.
Yeah the replacement caps in the 3rd image have the same voltage and capacitance but I'm not sure what those no. on the top means.

I tried looking at videos on YT but that cap is under the heatsink and is not visible in any of the B-Roll videos i saw.
I tried looking too but could find a shot with these capacitors in view.
 

rsaeon

Disciple
I can't find the exact model of the caps that go there, but seeing other asus board its most likely this one:

That is correct — 270 uF, 16v. Electrolytic capacitors like these have a tolerance of 20% so the actual capacitance could be anywhere between 220 uF and 320 uF. Your replacement caps don't need to be of the same physical appearance or even manufacturer, so long as the specifications match close enough. I've replaced solid capacitors like these with regular capacitors without any longterm issues.

16-asus-prime-x370-pro.jpeg


This should work just fine:

The number 270 is from the E12 series of logarithmic steps, which is sadly still considered a premium series of values even in 2022, so they're not as easily available as the E6 series online in India. Mostly because the E6 series is what's used by most hobbyist and educational material. 220 and 330 are from the E6 series. But if you have an electronics market nearby that caters to engineering students, you'll almost certainly find the 270uF capacitor there. It's a point of showing off with electronics engineering students to use rare components from the E12 or even E24 series, which hilariously always costs them marks because your circuit design is supposed to be easily replicated.

 

PradUp

Patron
That is correct — 270 uF, 16v. Electrolytic capacitors like these have a tolerance of 20% so the actual capacitance could be anywhere between 220 uF and 320 uF. Your replacement caps don't need to be of the same physical appearance or even manufacturer, so long as the specifications match close enough. I've replaced solid capacitors like these with regular capacitors without any longterm issues.

View attachment 136684


This should work just fine:

The number 270 is from the E12 series of logarithmic steps, which is sadly still considered a premium series of values even in 2022, so they're not as easily available as the E6 series online in India. Mostly because the E6 series is what's used by most hobbyist and educational material. 220 and 330 are from the E6 series. But if you have an electronics market nearby that caters to engineering students, you'll almost certainly find the 270uF capacitor there. It's a point of showing off with electronics engineering students to use rare components from the E12 or even E24 series, which hilariously always costs them marks because your circuit design is supposed to be easily replicated.

Thanks a lot.
BTW who you looking forward to solder them?
I assume you mean how. It fairly straightforward job, desolder the caps from the old board, clean up the solder pads of the new one and then just solder the caps on. They are probably the easiest things to solder on a motherboard.
 

jinvidia

Adept
Isnt it possible to handover this job to authorized Asus service center who will do the job more professionally with the exact capacitor ?. I hope they are willing to do this in the first place.
 

chetansha

Skilled
Isnt it possible to handover this job to authorized Asus service center who will do the job more professionally with the exact capacitor ?. I hope they are willing to do this in the first place.
If you contact them for OOW service repairs they will direct you to a guy in Deharadun, who is a fraud. I had very bad exp. Sent 1 board to him for repairs, he quoted 5k for repairs, same board i repaired locally for 800/-. Unethical guy.
 

nRiTeCh

Skilled
If you contact them for OOW service repairs they will direct you to a guy in Deharadun, who is a fraud. I had very bad exp. Sent 1 board to him for repairs, he quoted 5k for repairs, same board i repaired locally for 800/-. Unethical guy.
Woah! Asus earning 4.2k for a mere 800 bucks job? Unbelievable! Didn't you complained to Asus about the guy charging hefty sums?
 
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