I got bad caps!

[gottcha]

My brother in law wanted me to clean up his computer due to malware and viruses and well....... every capacitor on the board is leaking well except for like two of them. I can replace them but i don't know which type or where to get them from. the main board has "P4PB 400C-FL" and its "REV C2"
can anyone help me out??

this is what the board looks like

http://accelenation.com/?ac.id.184.1

[Super Nade]

What do you need help with? yhpm

[ZL1]

http://www.badcaps.net/forum/showthread.php?t=5975

I usually get mine from http://www.digikey.com/

[gottcha]

Internet is screwing up!!!!! I tried to reply to your PM Super Nade. Would you be able to tell me what caps to buy?

[Super Nade]

Sure, but I need better pictures. Off the top of my head, I would suggest Chemicon PSA (solid caps) 16V caps of the highest value.

[Evilsizer]

could you mound solid caps on a thru hole pcb? i thought all solid caps were SMD style soldering(aka pads, not thru hole). shows you how much i look at caps....

[Paradoxmaker]

LOL i'm in the process of the same thing..

Mom's HP started crashing at random and not booting. I suspected malware\virus's, bad PS, or dirty heatsink/bad fan.

Opened it up and all the caps by the cpu are blown..
http://i51.photobucket.com/albums/f376/Paradoxmaker/Misc%20Pics/capsblown1.jpg
Ordered some correct size ones off ebay. Got the old ones out and are waiting on the new ones to come in.

[Super Nade]

could you mound solid caps on a thru hole pcb? i thought all solid caps were SMD style soldering(aka pads, not thru hole). shows you how much i look at caps....

The ones I suggested are radial and . ;)

[Evilsizer]

wow para those look horrible... what SN is after is on the side of the cap.. more then likely looking for the uF number...

[Super Nade]

Try these links for exact model number and data:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=565-3042-ND
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=565-3234-ND

[gottcha]

Ok i finally got around to pulling the mother board out. and here is a list of the caps and ratings.

7 ) 3300uf 6.3v "around the proc"
4 ) 1500uf 16v "also near proc"
6 ) 1000uf 10v "scattered around the board"
6 ) 1000uf 6.3 "also scattered"

is that the numbers i have to look for? and is there any thing else i need to look for when buying caps.

Ok i searched the site and i can't seem to find the caps. i can find 3300uf but not at 6.3v only at 16v

[Evilsizer]

if you can only get the 3300uF in 16v then that is ok. the slighly higher voltage wont be a issue. now from my limited DIY audio amp building. they said a higher voltage cap will laster longer since it isnt being 100% fully charged/discharged all the time. im not sure if SN would say the same or not but i would follow him on this(about the longer life or not). if anything the cap might be slightly bigger then the ones on the board. if you feel like replacing all the caps then go for it nothing wrong with that. that way you make sure the board lasts for alot longer.

[gottcha]

I was only going to replace the known bad caps. my brother in law will only be using this for a few more months.

[Evilsizer]

can you do a slightly farther back shot of the cpu/socket are.. im tring to see how many chokes there are for the cpu pwm. going on the linked reveiw its a 3phase pwm and there are 9 caps for the cpu/pwm system.

yea that wouldnt be a problem to just do the cpu caps, here i thought the computer needed to last longer.

[eobard]

http://i51.photobucket.com/albums/f376/Paradoxmaker/Misc%20Pics/capsblown1.jpg
I've seen cleaner looking bus accidents. :eek:

[gottcha]

I win for worst pic ever on OFC!!!! sorry my camera is dieing

[madhatter256]

I win for worst pic ever on OFC!!!! sorry my camera is dieing

From that picture alone I can tell which ones are bad. :P

I have had good luck with Rubycon, Panasonc, Sanyo, and Chemicon.

I bought mine from ebay or right off of discarded motherboards.

[gottcha]

I have two other P4 boards and none have the same caps!

[Super Nade]

I was only going to replace the known bad caps. my brother in law will only be using this for a few more months.

If you are re-capping, replace all caps. Bad caps have a way of spreading the disease to their neighbors.

[ZL1]

If you are re-capping, replace all caps. Bad caps have a way of spreading the disease to their neighbors.

ditto, if you dew it, dew it right :)
the ones that show no signs may just be on their way and once they see new caps around them, they might get scared :D

[gottcha]

Well after looking around. I found a new board for 60 bucks on new egg and he decided to go that route. The bad caps board will sit for a while and i might put it together later.

Thanks for all the info guys!!

[Paradoxmaker]

Well i got my caps in the mail on Tues and got em installed today...So far the comp has been up and running for an hour or so with no crashes....
http://i51.photobucket.com/albums/f376/Paradoxmaker/Misc%20Pics/newcapsin.jpg

[Evilsizer]

nice! what was the cost for the price of the caps?

[Paradoxmaker]

nice! what was the cost for the price of the caps?

I got 20 1500uf 6.3v caps from ebay for $10.99 shipped. Only needed 10 of them, but i wanted a few extra incase i made some mistakes.

Luckily no mistakes, so i've got 10 left.

Probably could of get them cheaper, but i was a little lazy in looking for em.

[Blazing fire]

Wow! Well done at replacing it.

[Paradoxmaker]

Wow! Well done at replacing it.

Thanks...

Well it seems to be doing good. Where before it would either not boot or crash after 5-15 min, it ran for over 4 hours last night running virus and malware scanners last night without any problems.

[ZL1]

Thanks...

Well it seems to be doing good. Where before it would either not boot or crash after 5-15 min, it ran for over 4 hours last night running virus and malware scanners last night without any problems.

:beer::beer:
capwork can be really rewarding :)

[madhatter256]

I was successful with one out of two cap jobs. The first one I did, I did correctly, but after a single boot, the motherboard would no longer turn on. The second one worked well after the cap replacement, and sold it on CL.

Great job on the cap replacement.