A few questions....

[Kane3162]

OK!

Im resurrecting my old system, my question is as follows:
I have to video cards, one works, the other doesn't, on the first 2 pictures thats the broken ones, the last 2 are of the one that works, notice the one that doesn't work has solid caps and the one that does has the soft caps (as well as a few other differences). So the question is can i take the solids from the broken one (i cracked the GPU on accident) and replace the ones on the working one?

http://www.mediafire.com/file/rkaymnzzgwz/IMAGE_022.jpg
http://www.mediafire.com/file/zdjtmvoemyw/IMAGE_023.jpg
http://www.mediafire.com/file/etiowytjdmn/IMAGE_024.jpg
http://www.mediafire.com/file/rgtxmnd0y21/IMAGE_025.jpg

Working card ones:
Purple top right: (IMG024) UNI-CON/105c 16v/330uf (also says Skywell SEL)
Green left and below the purple: S.E.40/105c 25v/100uf
Purple top left (img025) same as above
Green right of the purple (img025) same as above
LIGHTPurple bottom and to the right (almost center img025) sanyo 560(over)4 105c/6A

Nonworking card ones:
4 5/1500/6a (same for purple/lightpurple)
3 9/100/16a
(you can also look at the pictures if what im saying is not clear enough, at least for the solids, the / is used as a next line entry)


Additionally looking at them in more detail i notice the solid caps on the non-working one also are i guess higher rating? and some of the smaller things are different as well just take a look at the pics...
Working: 4 4 8/S V P/1200/4
Nonwrk: 4 3 4/S V P/1500/2.5


overall the layout is EXACTLY the same... so can i just 1:1 transfer stuff over?


Thanks

[kaniki]

Re: A few questions....

first let me say to please use the attachment feature for attaching photos for everyone to see. doing this makes a lot less hassle for anyone to help. all they have to do is just click the picture to get the file vs click link, download file, open picture like they have to do with links. there is a thread about this..

https://www.badcaps.net/forum/showthread.php?t=2401

I am not 100% sure but i do believe that solids can be replaced with soft ones and vise versa with no problem, as long as the replacement caps are about the same esr rating (both being low, etc), of the same UF rating, and are at least as high in volts as the originals. example.. 1000uf 16v cap can be replaced with a 1000uf 20 volt cap, but you do not want to go lower in volt rating.

It is best to get new ones if you are replacing the caps as you can do damage to the caps removing them from a board and may never know it by looking at it. not to mention that if the cap has been used, you can not tell the internal condition of the cap. so usually best to just buy a new one.

[willawake]

Re: A few questions....

[PCBONEZ]

Re: A few questions....

Why do you want to replace caps on a working card?

[Kane3162]

Re: A few questions....

the best of everything on one card... so i can trash the other and not have to worry about the soft caps blowing...

also thanks for posting the how to for attachments and also posting them for me

[PCBONEZ]

Re: A few questions....

Probably work but might not.
Bottom line is you have to trace the circuits and do the math to know for sure.
-
Same reference board doesn't mean much.
Caps aren't the only parts that can have different values.
If one of those caps is used to set or match a frequency for something else you could be hosed by switching caps.
Those caps are usually for noise filters and some are probably in PI circuits which also have an inductor that is matched to the caps.

You seem to be asking us for a definite 'will it work' answer but without tracing out all the circuits [which pretty much no one wants to do for their OWN stuff, let alone someone else's stuff] all anyone can do is guess.

Best guess: You'll probably get lucky and it will work fine.
- But that isn't 'certain' at all. It's a guess.
.

[Kane3162]

Re: A few questions....

well thanks, but its the SAME EXACT model... guess they changed what they used since i bought them about a year apart... both have the same model, the pathing looks exactly the same, same chip's ect... im just gonna go ahead and do it...

[Agent24]

Re: A few questions....

notice the one that doesn't work has solid caps and the one that does has the soft caps (as well as a few other differences).

so can i just 1:1 transfer stuff over?

It might be exactly the same model but as you said yourself, they use different capacitors, and there are other differences, so already for that reason they are different and therefore not 1:1

Could be a different revision with improved design or could be they were just using whatever capacitors they had available at the time, and changed the circuitry to suit.

D-link love doing that with wireless adapters, the first revision of a card might have a chip from say, Ralink, while the next revision has something completely different, eg: Realtek. But both are exactly the same model.

So really you can't be sure unless you do like PCBONEZ says and trace the entire thing and compare.

And again, the capacitors on the other card might not be in top condition anyway.

What you can be pretty sure of though is if you buy some brand new good capacitors that suit the working card and put them in now, you should have no problems.