Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

[Behemot]

Seems like another compensation problem. As long as I threw away original caps some time ago, I dont know which ones are bad So if anybody has it and could provide me with some kind of list of used small caps, I would be glad.

If not, I will demount it for components in soem point next week and continue with other projects I need caps for (I run out of RS 3300 uF/16 V for the time beig). I simply don't have the time to waste with these craps any more. And these FOrtrons became pretty much crap. Next time I know I have to both select small caps properly and test it after each step. I am still used to older FSP PSU's which werent so tightly set for these crappy caps.

The thing is, all of the small caps used this time are not so low ESR, some Rubycosn YXK or YK and Chemi-Cons KZG? pretty much egenral purpose. Msot of the original ones were tiny, so they couldnt have some super-low ESR values too. So I don't understand it.

[mockingbird]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

Post a pic, I may have something similar.

[Behemot]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

here are some foggy: http://www.elektroda.pl/rtvforum/topic899582.html

[mockingbird]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

Yea, that looks like an FSP350-60THN...

I have a 350THN on hand, you want the values?

[Behemot]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

Well I am almost sure this is different one. One thign is it has this markign on the board also (if it would be generic THN, it would be there). Also heatsinks and layout is slightly different.

I am sure I changed them for exacly the same values, I more like need to know who is manufacturer and what lines for them to have a look for ESR values

[mockingbird]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

Looks exactly like a THN to me. THN has slightly different 5VSB circuit and startup circuit than PN. I also have an Aopen rebranded FSP.

[Behemot]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

Very well than. So you can do recap of your own and by the way make a list of all the tiny crappy caps which are there?

[Behemot]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

How was the thread moved here??

[mockingbird]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

I didn't get around to it yet... I have the 350THN in a computer so I have to take it out. I have a 300THN sitting here but I know you have the 350W version... Probably almost identical, but just to be sure I want to check the 350. I'm not going to re-cap it just yet, it doesn't belong to me, so I just want to check the values.

[Behemot]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

Was asking how on earth it moved itself to Recapping your motherboard?? I am positive I placed it into Power supply design and stuff.

[mockingbird]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

I got a chance to crack that 350-THN open... Almost identical to the 300-THN with a few exceptions:

1) The primaries are 200V 820uF (Is this the same as your UMD/MDN?)
3) 3 of the 3300uF main secondary filter caps are 4700uF in the 350W model
4) In the 300THN, these 3300uF caps were Jamicon "TM" series, here they improved them with Teapo SC which are decent caps

FSP350-60THN

[Behemot]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

All Teapo is crap I think, but anyway, I don't really think these version is 100% compatible - I had really no Rubycons in there Still, hopefully it will give me a clue where should I expect lower-ESR ones and where are just the ordinary general purpose enough.

But thanks for the small Teapos/OST, will have a look for the specs…can you also overlook the daughterboards? Fan controller is not so important, the compensation board would be better actually

[mockingbird]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

Yea, Rubycon YXF in the 350THN, but they were Teapo SC in the 300THN... It's really irelevant. You just need some small caps there that can tolerate heat. I read in another thread that there's one or two "critical" small caps. You're really overthinking this. Just get some good small caps... Don't use GP caps, even if they were there before. You can always do better than GP caps buy stepping them up to something like Panasonic FC.

The guy picked his computer up last night... If you want, I can give you the caps of the daughterboard on the 300THN...

I have another FSP on hand, it's an AOpen branded "Z350-08ATA". It's unique in the sense that it has a power passthrough in the back to plug in a male power cable if you want to connect your screen to the PSU like those AT PSUs had.

[Behemot]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

I *need* exactly these or 100% compatible models, because I have already changed *all* the caps and *it does not work*, ai? Compensation problem. Usually before on other FSP designs, it was either somewhere was GP on place of low-ESR or vice versa. Getting the right ones solved the problem. That's the reason I need the correct list ya know

Always small caps, hopefully FSP won't *ever* suffer from Enhance's problem of changing big caps for good one efectively caused compensation to go crazy.

[Behemot]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

What?

[retiredcaps]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

JaneHartung is a spammer and posting 1 post/minute in each forum

I have already reported JaneHartung to the admins. Just waiting for them to the id above.

[mockingbird]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

Usually before on other FSP designs, it was either somewhere was GP on place of low-ESR or vice versa. Getting the right ones solved the problem. That's the reason I need the correct list ya know

Yes, I have had this happen to me before, but never with an FSP PSU... I should track down with that PSU which cap needs to be changed for it to turn on.

[Behemot]

Re: Anybody has FSP-350UMDN(R) or FSP350MDN(R)?

Thanks. For me it was, well, msotly FSP. Older series did not care much what was inside, now its more tightened to all those craps inside since they want better efficiency and stuff from it.