Re: Very ugly capacitors... or fake? (Panasonic FR)
Twas nice, though I prefer the shade of FCs better...
Twas nice, though I prefer the shade of FCs better...
-
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
everybody will always miss mbz. lets hope rubycon comes out with a good replacement
but then again, maybe in the future everything will be polymer on motherboards, things are slowly going that way for motherboards. But i'm not sure polymers can be properly integrated into power supplys. I mean, 400v polymer? not sure if thats even possible. and if it is, it won't be cost effectiveCap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM meComment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
Rubycon won't be replacing it. They're saying to use ZLG instead, but the ESR is not low enough. I can't say I blame them. There's much less demand for low-esr electrolytic capacitors since motherboard makers are now switching to polymers.
Ultra-Low ESR caps will become a rarity in the future, and all you'll be able to buy is new old stock.Comment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
But Polymers will be OK to use instead won't they?"Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
not in all circuts. VRM's where theres parallel caps sure. but supposedly not startup caps or non-filter caps, at least thats the impression i've gotten so farCap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM meComment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
Tracing back caps to see which are VRM is a nightmare for me, that's why I don't use polymers.Comment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
Often not. - Especially if it's not in a motherboard VRM.
Try finding a 2200uF 16v in Polymer.
.. or even a 1500uF or a 1200uF 16v Polymer.
You -might- even find some but then,,,
I saw some 1000uF 16v a while back. They were over $7 each...
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
Don't you halve it though? So a 16V 2200uF would become 8V 1100uF or more likly a 6.3V 1000uF which are inexpensive and widely available.
EDIT: I missed the part where you said if it's NOT in the VRM.
Thankfully, the motherboards are being designed these days to use lower valued caps but more of them rather than large valued ones. So only those pre-polymer designs might have no replacement parts in the future.Last edited by mockingbird; 04-06-2011, 03:21 PM.Comment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
creating circuits is pretty mathematical. polys and lytics are not only different as far as the forumla they use inside, but the mathematical formula used to make circuits. this is why you must half the values
one thing I do notice is polys don't blow. I even put 10 of them in reverse accidentally on a dell gx270 and they withstood several attempted diagnostic attempts at starting that thingCap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM meComment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
That explanation was a little ambiguous, but appreciated nonetheless.Comment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
So if Low-ESR electrolytics get dropped there is no replacement at all for them?"Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
Bunk.
Wrong all the way around.
Halving the uF is only safe in a VRM and even then only if you significantly reduce ESR.
- THAT comes from an application guide for a VRM controller chip.
It wasn't dreamed up out of the mist like some mods are.
Outside of a VRM the value of uF could be critical to the circuits operation and you'd best not jerk with it short of drawing out the entire circuit and doing ALL the math for it.
So far as polys not blowing,,
I just had one blow in a Dual CPU server board,, oh,, 45 minutes ago.
It blew load enough to startle me into stepping back.
It went out with a large puff of nasty nasty smelling black smoke.
The top of the can is now sitting a bit less than 1/4" higher from where it was before.
The 'legs' are that same amount longer than they were before.
It was an OSCON SEPC and in parallel with 9 others.
The clincher is it is VRM-out for the socket that did NOT even have a CPU installed.
It wasn't even loaded in that configuration.
- WTF! - This is NOT my day!
Anyone have any new 4 letter words? - I'm running out today..
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
PCBONEZ, this accident is unfortunate. Hope it wasn't a recent board but an old one in case it blew something other than just the cap.
When you say halve the uF, do you also halve the voltage?Comment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
You know better than that...
The rated voltage still has to be more than the actual circuit voltage.
On the Vcore side of VRM in any thing I've seen in the last few years 2.5v caps are enough because CPU Vcore are under 2.0v.
On the PSU side obviously you still need 16v caps.
---
Was a dual skt 771. - Just sold it's 'brother' for $125.
All I was doing was setting up to memtest some FB-DIMMs.
.
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
Oh right, that makes sense now. In fact now that I know the answer I don't see how I failed to understand in the first place
"Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
-
Re: Very ugly capacitors... or fake? (Panasonic FR)
Was curious because of exactly that... I thought I saw really low voltage polymers around some sockets so I was a little confused.
Initially I thought that the reason for lowering the spec with polymer caps was because the higer ripple ratings compensated for the drop in voltage.
Sounds like old Core2 Xeons...Was a dual skt 771. - Just sold it's 'brother' for $125.
All I was doing was setting up to memtest some FB-DIMMs.
Thanks for the clarification.Comment
-
I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow
This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board
After all of... -
Hi,
I have capacitors like this one in the photo. There are differences between other Elna series, I attach foto of Elna RE3. On this green capacitors series is not specified! Fake?... -
Hi, I have some 32 bits computer motherboards that need repair, as they fail to
power on.
Here are some examples :
(N.B. "capacitors" indicated here are electrolytic capacitors located in the onboard
switching supply area).
(N.B. #2 : I could not find a 3300 microF aluminum-polymer with a higher voltage
than 6.3 V.)
1 - Motherboard #1 : this is an Asrock K7VT2 (socket A) that still works well. To put it on test
I replaced capacitors with aluminum-polymer.
3300 microF/6.3 V. x 4 replaced by 3300 microF/6.3 V. (KYOCERA... -
Hello! yes I know there is already lots of information about this issue. I have a Panasonic TC-P55ST50 that originally displayed an 8-blink error code. Following the troubleshooting flowchart, I ended up replacing the SS board. However, even after replacing it, the issue persists. The TV turns on and stays on without displaying an image, and continuity is confirmed on all connectors. What am I missing here🤔?
Ok Im a mechanical engineer ...but I thought I was able to follow a rather simple flowchart for electric troubleshooting 😂.
TV Model: Panasonic TC-P55ST50
...11-20-2024, 08:52 PM -
hey all, iv got my favourite battery charger here which iv had for many years probably 15 years now or maybe even more. it still works good but thought id open it up to clean the dust out of it, lots of dust inside but now its clean and noticed 4 capacitors inside it and wondered if i should replace them.
it has inside:
2 x 47uf 16v caps 105c branded as Su'scon (lol sounds sus to me)
2 x 470uf 16v LZ105c branded as G.Luxon
not heard of these brands are they any good?
iv attached photos of the charger and the board inside for an idea on the type of...
Comment