Replacement caps advice needed for ASUS Notebook AC/DC Adapter

[Almighty1]

One of my ASUS Laptop AC/DC Adapters for the 17.3" G74SX Notebook is no longer supplying enough current to the notebook so it's not charging but the voltage on the Multi-meter tests correct. In any case, I am looking for replacement capacitors that either meet or exceed the original specs from Rubycon, Nichicon, Chemi-con or Panasonic and would greatly appreciate if someone can find me suitable replacements with the following original list of what I could read:

AC/DC Adapter
Input 100v-240v 2.0A 50Hz-60Hz
Output 19.5v 7.7A

Capacitors are as follows (maximum height is 1")
1) 105c 180uF 450v SAMXON HP
2) 130c 220uF 25v Rubycon RX30
3) 105c 4.7uF 50v Rubycon RX30
4) 105c 1800uF 25v Nichicon HD
5) 105c 1000uF 25v Chemi-con KZH
6) 105c 1000uF 25v Chemi-con KZH

Thanks in advance!

[Per Hansson]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

Have you confirmed the caps are bad?
They are all good brands/models so it would surprise me...

[Almighty1]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

The Samxon seems to have a big bulge like it's swollen on the top but I just want to see if replacing the capacitors fixes it since I am using another identical unit with the laptop for the past year when this one died a year ago without problems. They might be good brands and models but this AC/DC Adapter runs very hot at 150C for 5+ years.

[stj]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

if the bulge is black plastic, press on it - those disks often warp.

[Almighty1]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

I did and it's solid and won't move.

[R_J]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

Remove that black plastic disc from the cap. If the metal is bulged, then you may have found the problem without having to replace all the caps

[Almighty1]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

I know but I just want to know what are good replacements since I have 3 of these power supplies so might as well pick up the caps in case the other ones fail too. Besides, I'm going to be paying shipping anyways so might have more in the cost of the products that will make shipping costs worthwhile from places like Digi-Key and Mouser.

[stj]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

what's the diameter,height?

[stj]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

ripple current is 1A btw.

[Almighty1]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

No idea on the height of the others except I know the #1 is almost 1" in height since that is the highest that can be used before the metal shield goes on top. All of these caps basically are the round Aluminum Electrolytic type that has two wires on the bottom of the cap. All of them are small except #1 is big. Can't get the measurements since I would have to desolder everything first which I rather do when I replace it.

[Almighty1]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

I knew I forgot something and basically there is one cap I forgot too. The measurements for #3 is actually bigger as this one is deep in the bottom and I can't get the ruler in so I used something else to get a approximate measurement and made the number slightly bigger.

Capacitors are as follows (maximum height is 1" for any capacitor replacement as there is a shield that sits on top before the chassis.
1) 105c 180uF 450v SAMXON HP 27mm H x 30mm W
2) 130c 220uF 25v Rubycon RX30 14mm H x 8mm W
3) 105c 4.7uF 50v Rubycon RX30 15mm H x 5mm W
4) 105c 1800uF 25v Nichicon HD 25mm H x 13mm W
5) 105c 1000uF 25v Chemi-con KZH 21mm H x 11mm W same as #6
6) 105c 1000uF 25v Chemi-con KZH 21mm H x 11mm W same as #5
7) 105C 22uF 50v Rubycon YXG 12mm H x 5mm W

The AC Adapter is made by Delta Electronics for ASUS and while there is supposedly a replacement Delta Electronics OEM branded adapter on Amazon, it does not work as well with the notebook as the power will cut when the notebook is under heavy load with the replacement according to others. Visibly, capacitors #2-7 are all the ones with the top exposed and all of them look flat and no leaks anywhere but you never know. #1 is the only one that is swollen on the top but I might as well just buy all the caps and try replacing them one by one if replacing just #1 doesn't work.

[stj]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

the samxon is a custom size or your measuring skilz are poor.

[Almighty1]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

Remember the capacitor is still installed so it cannot be measured that accurate, it can only go where my 1 ft metal ruler can fit but it is 30mm wide but 27mm in height.

[sam_sam_sam]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

Remember the capacitor is still installed so it cannot be measured that accurate, it can only go where my 1 ft metal ruler can fit but it is 30mm wide but 27mm in height.

You need to measure the pin to pin spacing so I can try find one that might work
You might need to remove this cap and really measure exact if there is no extra room

[Almighty1]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

You need to measure the pin to pin spacing so I can try find one that might work
You might need to remove this cap and really measure exact if there is no extra room

The pin spacing shouldn't matter since on the Rubycon caps, the pins are actually slightly wider than the caps. Not to mention, if I took out the caps which also are inside some adhesive, I would not remember which cap where which is why I prefer to take out one cap and put in one, one at a time. As long as the width of the cap fits and the height of the cap does not exceed 25.4mm on any of the caps, it will fit. I can see the Chemi-Con KY being a candidate for #3, #5, and #6 while Panasonic FR for #7 as far as size goes, just not sure if it exceeds the original caps. In reality, I don't have a way to test the caps but probably the Samxon is the one that has the problem as the LED light still works and Samxon is the only one that is not a Japanese branded capacitor in the list.

[Almighty1]

Re: Replacement caps advice needed for ASUS Notebook AC/DC Adapter

I looked again and basically the Rubycon capacitors still have pins within the size of the capacitors width but just don't seat physically close to the circuit board because it would be touching the Samxon capacitor's body so they raised it but spacing of the pins shouldn't matter because remember on capacitors other than the Samxon, the leads are longer than the spacing so it can handle wider or narrower spacing without issues.