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Capacitor Issues


pmp174
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I bought a used Xbox. It seems to be functioning. I removed the clock capacitor. However I found these capacitors to be slightly corroded. I cleaned it lightly with Isopropyl alcohol. (Not sure if that was a good idea). What should I do? Should I replace these capacitors. I believe this is a 1.2 revision. It was made Oct 2003. So not sure. By the way let that be known in case it hasn't happened to anyone. That other capacitors may be starting to go bad.

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Yes those Cap's need to be replaced there about to explode.

And yes it happens to heaps if not all of electronic's. I have been replacing  faulty caps for as long as I can remember.

Isopropyl Alcohol is safe to clean the PCB with the higher the percentage the better(like a good scotch).

 

SS Dave

 

 

Those who can hard-mod, Those who can’t soft-mod.

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3 hours ago, SS_Dave said:

Yes those Cap's need to be replaced there about to explode.

And yes it happens to heaps if not all of electronic's. I have been replacing  faulty caps for as long as I can remember.

Isopropyl Alcohol is safe to clean the PCB with the higher the percentage the better(like a good scotch).

 

SS Dave

 

 

Those who can hard-mod, Those who can’t soft-mod.

Do you happen to know what kinds of capacitor of Xboxes use? Any vid with info on this?

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The reason that the caps fail is talked about in this WIKI

https://en.wikipedia.org/wiki/Capacitor_plague

As for what Cap's there is plenty of debates online regarding brands to use.

But for me I use low ESR style caps in my repairs and I have not had any problems.

 

SS Dave      

 

                                                                                                                                                         
Those who can hard-mod, Those who can’t soft-mod.  

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  • 1 month later...

hi there!

the same caps went bad on my xbox v 1.2. they look identical to yours and i'm going to replace them soon. the 3 caps are 6.3v 3300uf Nichicon HM (10x25mm).

I ordered these for replacement, since they are available in my region: Yageo SC006M3300B5S-1325 / 3300 µF 6.3 V (13x25mm).

as you can see, the yageos are slightly bigger, but i'm pretty sure this shoud be no issue....

 

hope this helps!

 

greetings

bot_1

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  • 2 weeks later...
17 hours ago, Kali Karnage said:

Damn that looks rough. I guess i got lucky with my 1.4. Havent had any caps leak and i got a nichicon clock cap. 

Yet.

All Cap's made in the last 30+ years are going to fail and some will also leak. Blame cheap manufacturing and poor copy's of the capacitor's original design .

There is case's of the gold clock cap that your Xbox has and the version 1.6 has now leaking .

 

SS Dave


Those that can Hard-Mod. Those that can't Soft-Mod.

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On 12/11/2019 at 10:29 AM, bot_1 said:

hi there!

the same caps went bad on my xbox v 1.2. they look identical to yours and i'm going to replace them soon. the 3 caps are 6.3v 3300uf Nichicon HM (10x25mm).

I ordered these for replacement, since they are available in my region: Yageo SC006M3300B5S-1325 / 3300 µF 6.3 V (13x25mm).

as you can see, the yageos are slightly bigger, but i'm pretty sure this shoud be no issue....

 

hope this helps!

 

greetings

bot_1

The nichicon 6.3Vdc HM series caps have a much higher rated ripple current 3000 mA versus 1700 mA and a lower ESR 0.011 Ohms instead of 0.035 Ohms of the Yaego's.  Rated lifetime of the nichicons however is only 2000 hours.  There are other ultra-low ESR caps with up to 10,000 hour lifetime ratings.

https://www.nichicon.co.jp/english/products/pdf/e-hm.pdf

P.S. The Yaego's will most likely work but at a lower than rated life expectancy.

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  • 3 weeks later...
On 12/24/2019 at 2:26 AM, KaosEngineer said:

The nichicon 6.3Vdc HM series caps have a much higher rated ripple current 3000 mA versus 1700 mA and a lower ESR 0.011 Ohms instead of 0.035 Ohms of the Yaego's.  Rate lifetime of the nichicons however is only 2000 hours.  There are other ultra-low ESR caps with up to 10,000 hour lifetime ratings.

https://www.nichicon.co.jp/english/products/pdf/e-hm.pdf

P.S. The Yaego's will most likely work but at a lower than rated life expectancy.

hi there kaosengineer!

 

thanks for the reply and your insights! welp, didn't even know i had to look at ripple current and ESR as well. :/ as you can tell, i am by no means an expert, when it comes to caps...

the main reason i ordered the yageos is, that they were the only ones available in the store i ordered...

i replaced the caps today and tested the console for about two hours. it works well so far, no funny smell, no cracking heard from inside the housing. so, i think i'm good for now. 🙂   

 

is there a way to determine the approx. lifespan in regards of the lower ripple current and ESR?

 

greetings

bot_1

 

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14 hours ago, bot_1 said:

is there a way to determine the approx. lifespan in regards of the lower ripple current and ESR?

I don't know but I found this article on the Internet:

https://www.powerelectronictips.com/choosing-capacitor-ripple-current-capability-matters-farads/

It talks about the how the ripple current rating and ESR value affect the life expectancy of a capacitor.

Quote

... At the least, the component lifetime may be affected according to the Arrhenius Law, which states that lifetime is reduced by half for every 10°C increase in operating temperature. ...

 

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hey kaos!

thanks a lot for the background-info! i've read the article but i have to admit i have a very limited/basic understanding of physics (and electronics), and the fact that english is not my native language doesn't contribute much to my understanding. :D

nevertheless, i will keep your tip in mind. as a precaution, i'll expect a lower lifespan than advertised. i will defintely open my xbox up from time to time to inspect the caps and check for leakages...

 

greetings!

 

bot_1

 

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