Re: Replacement caps for Antec SP-450?
Toasty, I salute thee.
PCBONEZ:
Thanks. I didn't have to take anything apart (Apart from desoldering the wires from the case plugs to the PCB) to get all the caps. Just go to the dollar store and buy a 9-LED flashlight for a couple of bucks. I was able to see everything. In fact, a few posts up I took a picture of those two nasty little caps EC3 and EC4 and you can even see the markings on them. I got them out buy melting the solder with the PCB turned upside down and then pushing down on each pin simultaneously while in fluxed state until they fell out. I think I can even get the new ones in without the angled forceps as Toasty suggested because I'm going to wick away the solder so there's just holes (Something I usually never do), and then slide the really long leads from the new caps through them.
What I don't like about KG was the reduced size (Don't ask me why), so I did a little digging. Take a 50V 0.22uF Fuhjyyu TNR for example. So I'm looking at the KG spec sheet and an equal part that is only 4 x 7mm has a rated ripple of 3.5 and cost 48 cents. A 100v 0.22uF Nichicon VR has a rated ripple of 4.7 and is 5x11mm and cost only around 33 cents if you buy 1. Which is the better buy?
Regarding the filter in/outs, I think I've finally comprehended the idea here. The thing is, what forces filter in/out caps to sit right near the coils? Can't they ostensibly put them anywhere they want on the PCB? Isn't the only way to locate them is by tracing them? Isn't the only other alternative of doing it safely simply matching the ESR of ALL the PSU caps (Which isn't easy).
Finally I have a question that I've wanted to ask you for a while now. Is voltage rating on a cap really just a ripple rating? And if this is the case, wouldn't you agree that it would be safe to put a very highly ripple rated 10V cap in place of a 16V cap (I'm only asking theoretically, I have never done this). Something interesting I saw today while looking at a Panasonic FR spec sheet was that the ripple and ESR of certain caps which are same dimensions of a FM cap but had a lower voltage rating were the same! (Or something like that).
Toasty, I salute thee.
PCBONEZ:
Thanks. I didn't have to take anything apart (Apart from desoldering the wires from the case plugs to the PCB) to get all the caps. Just go to the dollar store and buy a 9-LED flashlight for a couple of bucks. I was able to see everything. In fact, a few posts up I took a picture of those two nasty little caps EC3 and EC4 and you can even see the markings on them. I got them out buy melting the solder with the PCB turned upside down and then pushing down on each pin simultaneously while in fluxed state until they fell out. I think I can even get the new ones in without the angled forceps as Toasty suggested because I'm going to wick away the solder so there's just holes (Something I usually never do), and then slide the really long leads from the new caps through them.
What I don't like about KG was the reduced size (Don't ask me why), so I did a little digging. Take a 50V 0.22uF Fuhjyyu TNR for example. So I'm looking at the KG spec sheet and an equal part that is only 4 x 7mm has a rated ripple of 3.5 and cost 48 cents. A 100v 0.22uF Nichicon VR has a rated ripple of 4.7 and is 5x11mm and cost only around 33 cents if you buy 1. Which is the better buy?
Regarding the filter in/outs, I think I've finally comprehended the idea here. The thing is, what forces filter in/out caps to sit right near the coils? Can't they ostensibly put them anywhere they want on the PCB? Isn't the only way to locate them is by tracing them? Isn't the only other alternative of doing it safely simply matching the ESR of ALL the PSU caps (Which isn't easy).
Finally I have a question that I've wanted to ask you for a while now. Is voltage rating on a cap really just a ripple rating? And if this is the case, wouldn't you agree that it would be safe to put a very highly ripple rated 10V cap in place of a 16V cap (I'm only asking theoretically, I have never done this). Something interesting I saw today while looking at a Panasonic FR spec sheet was that the ripple and ESR of certain caps which are same dimensions of a FM cap but had a lower voltage rating were the same! (Or something like that).
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