Help needed

[UNCLE BUTCH]

Hello to everybody. I am from Illinois. I am an oldtimer with a small amount of computer knowledge. I have a HP Pavilion that went from bad to worse, hanging up to not posting. When searching the internet for information I came across your site. I am going to try to repair it myself.
The motherboard is an Asus M2N78-LA '' PEGATRON ". It has 12 capacitors that are bulging, all of them are TK 6.3v 820uf. The rest look ok. My first question is: do i replace all or just the bad ones. The capacitors range from 100uf to 1800uf. The second question is, when ordering new ones, what information do i need besides the voltage, UF and temperature? I am sure i will have more questions later.

[ReeceyBurger123]

Re: Help needed

Replace all the Tk ones buddy, what caps you planning on using ?

[UNCLE BUTCH]

Re: Help needed

I would like to get the rubycon from Top Cat.

[Topcat]

Re: Help needed

replace all the caps 680uF and up. Post a list, and I can point you in the right direction with what to order.

[stj]

Re: Help needed

before you do that, check in the psu
bad motherboard caps can be caused by poor power from a psu with bad caps.

[UNCLE BUTCH]

Re: Help needed

Thank you, It might take a day or two but I will post a list and will check power supply.

[UNCLE BUTCH]

Re: Help needed

Here is a list of capacitors on my Asus M2N78-LA motherboard.

8 very small 25v no uf markings 105 C
8 KMA 16v 100uf 105 C
3 Sanyo 16v 100uf 105 C
3 "Polymer" 16v 270uf
1 KZE 6.3 330uf 105 C
1 KZG 16v 470uf 105 C
1 "Polymer" 2.5v 820uf
12 TK 6.3v 820uf 105 C
10 Panasonic? 6.3v 1500uf
3 Panasonic? 6.3v 1800uf 105 C

The only ones that I could see with varying degrees of bulging were 11 of the 12 TK 6.3v 820uf, from slight bulge to one with crud on top.
I removed all 12 TK 820. The desoldering went well. I also removed 2 Sanyo 16v 100uf and 1 KZG 16v 470uf because I thought they looked suspicious [tilting and maybe bulging]
I have a Pay pal account or my credit card. I would like replace what ever you think is best with quality capacitors. Also, STI mentioned checking the PSU. I looked on you tube but did not find anything that could be a good way to test. I do not have any tools other than basic multi meter and am open for suggestions on checking the PSU
Thank you

[stj]

Re: Help needed

just open the psu and look at the top of the caps for bulging / leaking

[UNCLE BUTCH]

Re: Help needed

I did that. When I opened the case [the psu had not been turned on for at least two or three weeks] I did not see any thing abnormal. I did smell a very very faint smell of burnt electrical. I do not think any thing was burnt however. The psu was and upgrade from the original. It is 450 Thermaltake asnd about 5 years old.

[stj]

Re: Help needed

leaking caps smell like cat-piss, you wouldnt miss it!

[UNCLE BUTCH]

Re: Help needed

Did not smell any cat piss.

[Topcat]

Re: Help needed

Here is a list of capacitors on my Asus M2N78-LA motherboard.

8 very small 25v no uf markings 105 C
8 KMA 16v 100uf 105 C
3 Sanyo 16v 100uf 105 C
3 "Polymer" 16v 270uf
1 KZE 6.3 330uf 105 C
1 KZG 16v 470uf 105 C
1 "Polymer" 2.5v 820uf
12 TK 6.3v 820uf 105 C
10 Panasonic? 6.3v 1500uf
3 Panasonic? 6.3v 1800uf 105 C

The only ones that I could see with varying degrees of bulging were 11 of the 12 TK 6.3v 820uf, from slight bulge to one with crud on top.
I removed all 12 TK 820. The desoldering went well. I also removed 2 Sanyo 16v 100uf and 1 KZG 16v 470uf because I thought they looked suspicious [tilting and maybe bulging]
I have a Pay pal account or my credit card. I would like replace what ever you think is best with quality capacitors. Also, STI mentioned checking the PSU. I looked on you tube but did not find anything that could be a good way to test. I do not have any tools other than basic multi meter and am open for suggestions on checking the PSU
Thank you

These are the only ones that really need to be replaced:
1 KZG 16v 470uf 105 C
https://www.badcaps.net/store/produc...roducts_id=148

12 TK 6.3v 820uf 105 C
https://www.badcaps.net/store/produc...products_id=49


The panasonics shouldn't give you any trouble, but feel free to replace them anyway. the 100uF sanyo won't be bad.