Badcaps.net Forum
Go Back   Badcaps Forums > Motherboards with Bad Capacitors > Abit - Asus - Aopen
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 02-10-2018, 04:31 AM   #1
ruky con
a fake rubycon
 
ruky con's Avatar
 
Join Date: Jan 2017
City & State: california
My Country: USA
Line Voltage: 122.5VAC 59.9Hz
Posts: 483
Default Asus PTGD-LA with 3 dead NCC KZG capacitors

Hello, i was given a old HP PC which has a Asus PTGD-LA motherboard with 3 dead KZG capacitors on it (all three are 1000uf 16v) I'm looking at using polycaps for this recap, the capacitors i'm looking at right now are the NCC PSG series polycaps but i have not decided if i will go with polycaps yet. This is also the first motherboard i'm trying to recap (i would not care too much if i accidentally kill it) but if anyone has any tips on how to do it without killing the motherboard then i would highly appreciate if you could tell me.
Here is the best photo i could get of the motherboard as of yet.
Attached Images
File Type: jpg 20180210_030622[1].jpg (2.28 MB, 64 views)
__________________
(Insert Signature Here)
ruky con is offline   Reply With Quote
Old 02-10-2018, 08:20 PM   #2
Stefan Payne
Badcaps Veteran
 
Join Date: Dec 2009
City & State: Northern Germany
My Country: Germany
Line Voltage: 230VAC/50Hz or 400VAC/3P/50Hz
I'm a: Knowledge Seeker
Posts: 950
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Just go with Kemet A750, they are cheap and close enough to the original KZG.
Those PSG don't really make sense because they are darn expensive...
A750 are around half the price. And frankly, with a Board without an x16 PCIe I'd rather not invest much at all...

Is that really an i915 thing with a Pentium 4??

Anyway:
What you really need to do is kinda preheat the board because those PCBs can really suck up heat and is also designed as a heatsink in that area...

Do you have hot air station??
Or something similar??
That's rather important in this case...

Without it, you have a big problem...
Because its very hard to desolder them, even with a good iron...

So preheating it is the most important thing in all of this...

Last edited by Stefan Payne; 02-10-2018 at 08:35 PM..
Stefan Payne is offline   Reply With Quote
Old 02-10-2018, 08:32 PM   #3
ruky con
a fake rubycon
 
ruky con's Avatar
 
Join Date: Jan 2017
City & State: california
My Country: USA
Line Voltage: 122.5VAC 59.9Hz
Posts: 483
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

I was going to go with Kemet A750 but the earliest i can get them (from digikey) is 2 months.
ruky con is offline   Reply With Quote
Old 02-10-2018, 08:44 PM   #4
Stefan Payne
Badcaps Veteran
 
Join Date: Dec 2009
City & State: Northern Germany
My Country: Germany
Line Voltage: 230VAC/50Hz or 400VAC/3P/50Hz
I'm a: Knowledge Seeker
Posts: 950
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Mouser has a couple of them:
https://www.mouser.de/KEMET/Passive-...3&Ns=Pricing|0

And if you don't want to order @ mouser, you can still go with Pana FM.
They are a bit bigger than KZG - 10mm instead of 8mm but are a great replacement because about the same ESR...
Stefan Payne is offline   Reply With Quote
Old 02-10-2018, 09:17 PM   #5
ruky con
a fake rubycon
 
ruky con's Avatar
 
Join Date: Jan 2017
City & State: california
My Country: USA
Line Voltage: 122.5VAC 59.9Hz
Posts: 483
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Quote:
Originally Posted by Stefan Payne View Post
Anyway:
What you really need to do is kinda preheat the board because those PCBs can really suck up heat and is also designed as a heatsink in that area...

Do you have hot air station??
Or something similar??
That's rather important in this case...

Without it, you have a big problem...
Because its very hard to desolder them, even with a good iron...

So preheating it is the most important thing in all of this...
I have a few hot air guns (one of witch can get hot enough to melt solder) but no real hot air station.

Also, i don't like to buy from mouser anymore because they tend to screw up my orders somehow.

I think the power supply may also be dead.

Last edited by ruky con; 02-10-2018 at 09:28 PM..
ruky con is offline   Reply With Quote
Old 02-10-2018, 11:10 PM   #6
ChaosLegionnaire
HC Overclocker
 
Join Date: Jul 2012
City & State: Singapore
My Country: Singapore
Line Voltage: 240VAC 50Hz
I'm a: Hobbyist Tech
Posts: 1,215
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

here's a better pic of the board off the net. from the OP's pic, it looked like the board only has 2 power phases for the cpu vrm which is misleading. it actually has 4 phases which makes it a suitable candidate for polymodding.

so i almost ended up trolling the topic because i thought the board only had 2 phases and shouldnt be polymodded...
Attached Images
File Type: jpg Asus PTGD-LA.jpg (185.2 KB, 34 views)
ChaosLegionnaire is offline   Reply With Quote
Old 02-10-2018, 11:28 PM   #7
Stefan Payne
Badcaps Veteran
 
Join Date: Dec 2009
City & State: Northern Germany
My Country: Germany
Line Voltage: 230VAC/50Hz or 400VAC/3P/50Hz
I'm a: Knowledge Seeker
Posts: 950
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Quote:
Originally Posted by ruky con View Post
I have a few hot air guns (one of witch can get hot enough to melt solder) but no real hot air station.
That should be enough to "warm up" the board...

The Problem with those things is that they are unregulated and you have to be pretty careful to not heat the board up too much...

Quote:
Originally Posted by ChaosLegionnaire View Post
so i almost ended up trolling the topic because i thought the board only had 2 phases and shouldnt be polymodded...
hm??
Explain pls.

I want to know =)
Stefan Payne is offline   Reply With Quote
Old 02-11-2018, 06:20 PM   #8
RJARRRPCGP
Badcaps Veteran
 
Join Date: Jul 2004
City & State: North Springfield, Vermont
My Country: USA
Line Voltage: 123-127V 61.5-63.5 Hz
I'm a: Knowledge Seeker
Posts: 4,167
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Was that bulging and leaking just from sitting? The KZGs on my 2004 Asus A7N8X-X, looked like that, when just sitting!
__________________
Asus P6T Deluxe

Core i7 Extreme "Bloomfield" 965

PNY GeForce GTX 960

Windows 7 SP1

SoundBlaster ZXR

Corsair TX850M PSU


"There's nothing more unattractive than a chick smoking a cigarette" -Topcat

"Don't eat yellow snow!" -Salem

"did I see a chair fly? I think I did! Time for popcorn!" -ratdude747
RJARRRPCGP is offline   Reply With Quote
Old 02-11-2018, 06:27 PM   #9
ruky con
a fake rubycon
 
ruky con's Avatar
 
Join Date: Jan 2017
City & State: california
My Country: USA
Line Voltage: 122.5VAC 59.9Hz
Posts: 483
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Quote:
Originally Posted by RJARRRPCGP View Post
Was that bulging and leaking just from sitting? The KZGs on my 2004 Asus A7N8X-X, looked like that, when just sitting!
I don't think so as there's one other KZG capacitor that is not bulging.
ruky con is offline   Reply With Quote
Old 02-12-2018, 01:48 AM   #10
Stefan Payne
Badcaps Veteran
 
Join Date: Dec 2009
City & State: Northern Germany
My Country: Germany
Line Voltage: 230VAC/50Hz or 400VAC/3P/50Hz
I'm a: Knowledge Seeker
Posts: 950
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Maybe, but it seems that this board only has three caps between +12V CPU and CPU VRM.

But another thing:
Why are both memory sticks on one channel and don't use both??
Stefan Payne is offline   Reply With Quote
Old 02-12-2018, 02:06 AM   #11
RJARRRPCGP
Badcaps Veteran
 
Join Date: Jul 2004
City & State: North Springfield, Vermont
My Country: USA
Line Voltage: 123-127V 61.5-63.5 Hz
I'm a: Knowledge Seeker
Posts: 4,167
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Quote:
Originally Posted by ruky con View Post
I don't think so as there's one other KZG capacitor that is not bulging.
One day, I was in my bedroom, IIRC, (maybe another part of 105 Main St.) and decided to check my 2004 Asus A7N8X-X motherboard, which was just sitting in a room, and discovered that the caps were doing something that I never saw them do before, at least a fair amount of the caps, suddenly looked like a volcano!

Last edited by RJARRRPCGP; 02-12-2018 at 02:07 AM..
RJARRRPCGP is offline   Reply With Quote
Old 02-12-2018, 02:21 AM   #12
ruky con
a fake rubycon
 
ruky con's Avatar
 
Join Date: Jan 2017
City & State: california
My Country: USA
Line Voltage: 122.5VAC 59.9Hz
Posts: 483
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Quote:
Originally Posted by Stefan Payne View Post
But another thing:
Why are both memory sticks on one channel and don't use both??
I have no idea why. :|
ruky con is offline   Reply With Quote
Old 02-12-2018, 02:50 AM   #13
ruky con
a fake rubycon
 
ruky con's Avatar
 
Join Date: Jan 2017
City & State: california
My Country: USA
Line Voltage: 122.5VAC 59.9Hz
Posts: 483
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

So i said the power supply might also be broken broken so i took it apart and it was a really bad quality power supply.

But i think i may still have the OEM power supply somewhere.(i think it was a hipro)

You can see the garbage PSU here.

One last thing, this PC was given to me by my parents.

Last edited by ruky con; 02-12-2018 at 02:54 AM..
ruky con is offline   Reply With Quote
Old 02-23-2018, 08:07 PM   #14
momaka
Badcaps Veteran
 
momaka's Avatar
 
Join Date: May 2008
City & State: VA (NoVA)
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Hobbyist Tech
Posts: 8,273
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

You might want to remove that CPU heatsink and check what's under it (in terms of caps). Some ASUS boards come with Chemicon TMV, which are also prone to failure and should be replaced.

You could also go with Wurth Electronics polymer caps if you want to keep costs low. Series doesn't really matter that much with polymers - they would be pretty low ESR already. So pick whatever is available.

Quote:
Originally Posted by Stefan Payne View Post
And frankly, with a Board without an x16 PCIe I'd rather not invest much at all...
Couldn't have said it any better.
It really bothers me when I see otherwise okay-ish motherboards with no PCI-E x16 (or back in the P4 days - AGP) slot. Heck, even a PCI-E x1 slot would have been nice (could open it on the back and insert a full-size PCI-E 16x GPU then).

Quote:
Originally Posted by Stefan Payne View Post
The Problem with those things is that they are unregulated and you have to be pretty careful to not heat the board up too much...
Nah, it's really REALLY hard to overheat a board with a heat gun - you'd have to have your heat gun on its high setting and heat for at least 5 minutes. If you're holding the board, you'd notice way before then, as it will start burning your fingers once things heat up to 55-60C. And if you have the board resting on something, you would start to smell the hot PCB once you go past 120-130C - which is still a fairly modest temperature that most components will withstand for a few minutes just fine.

Last edited by momaka; 02-23-2018 at 08:08 PM..
momaka is offline   Reply With Quote
Old 04-16-2018, 07:26 AM   #15
ruky con
a fake rubycon
 
ruky con's Avatar
 
Join Date: Jan 2017
City & State: california
My Country: USA
Line Voltage: 122.5VAC 59.9Hz
Posts: 483
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Finally got around to removing the heatsink and..... all of the caps under it are NCC TMV 680uf 4v...

though i do have some salvaged 560uf 4v polycaps and i wonder if i could get away with using them to replace the NCC TMV caps.

Here is a photo of one of the 560uf polycaps i was talking about.
Attached Images
File Type: jpg 20180416_060557[1].jpg (2.34 MB, 13 views)
ruky con is offline   Reply With Quote
Old 04-17-2018, 10:39 PM   #16
momaka
Badcaps Veteran
 
momaka's Avatar
 
Join Date: May 2008
City & State: VA (NoVA)
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Hobbyist Tech
Posts: 8,273
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

Quote:
Originally Posted by ruky con View Post
Finally got around to removing the heatsink and..... all of the caps under it are NCC TMV 680uf 4v...

though i do have some salvaged 560uf 4v polycaps and i wonder if i could get away with using them to replace the NCC TMV caps.
Would likely be fine. How many TMV caps are there on the board? If 6 or more, I would say it's definitely safe to replace them with the PSA poly's.
momaka is offline   Reply With Quote
Old 04-17-2018, 10:48 PM   #17
ruky con
a fake rubycon
 
ruky con's Avatar
 
Join Date: Jan 2017
City & State: california
My Country: USA
Line Voltage: 122.5VAC 59.9Hz
Posts: 483
Default Re: Asus PTGD-LA with 3 dead NCC KZG capacitors

about 10 of them, 5 of them appear to have failed based off the way they look (the rubber bung on the 5 of them appear to be pushed out).

Note: I just spotted another KZG cap on the motherboard that appears to have not failed yet, it's a 1500uf 6.3v cap.

Last edited by ruky con; 04-17-2018 at 10:54 PM..
ruky con is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums 2003 - 2018
Powered by vBulletin ®
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 06:34 PM.

Did you find this forum helpful?