My turn to fix my PSU. Silverstone 350W

[Wizard]

Bloated 1000uF 10V Teapo in 5V standby output. Made mainboard's standby LED to blink, blink continuously. Swapped in Samxon XLR 1000uF 16V and changed other two 47uF 50V just in case in hot side of 5V standby circuit.

Other capacitors are jamicon and Teapo on all the outputs are fine.

The 120mm fan is ADDA and still spinning fine, designer/maker of PSU is enhance.

Cheers, Wizard

[goodpsusearch]

Re: My turn to fix my PSU. Silverstone 350W

Post some photos

[Wizard]

Re: My turn to fix my PSU. Silverstone 350W



No need to snap whole PSU. Those details I told you already is sufficient and PSU is pre-ROHS and year on the PCB is not right. Actually bought 4 years ago.
No power correction at all and 115V only. Dual big chopper transistors and group regulation. The rest of stand-up circuity is removed for this repair and this photo before I reassembled the PSU and returned to service with no issues.

Yearly dusting do HELPS with keeping PSU cool and long life.

Cheers, Wizard

[c_hegge]

Re: My turn to fix my PSU. Silverstone 350W

You poly-modded the PSU?

[Scenic]

Re: My turn to fix my PSU. Silverstone 350W

i see samwha

edit: and engrish

[Wizard]

Re: My turn to fix my PSU. Silverstone 350W

Hehehe, I know my english is not my strong point and I have to redo several time on writing, I'm deaf guy but you should see that I do have full-time job repairing TVs.

Regarding Samxon capacitors, they are good one. And this is biggest reason for strictly sourcing these we do not like buying stuff from multiple suppliers and especially from USA due to shipping and customs taxes & broker fees.

I do not understand the surprise and disgust of Samxon, actually is good one as long as you get them from trusted sources and all of you have good sources right here and use correct series in specific applications. So far, with our work, there is NO callbacks with Samxon capacitors in TVs, electronics and other stuff for 2 years now. Ones that co-coworker against my advice used generic capacitors and came back bloated again, no ifs or buts. And I do not use GF either due to fakes and one of my source is concerned about those Samxon fakes.

There are many good and high end PSUs using polymer capacitors these days. So what?, do your research. Don't be acting like a deer standing there outlined by headlights.

PS: I should scold you for playing bait, this is not samwha capacitors, I got these polymer ULR line from King of Cap King to try them out at Joe's urging when I put in capacitor resupply order and are genuinely Samxon's. I corrected to ULR not XLR, I misremembered, my apologies.

Cheers, Wizard

[370forlife]

Re: My turn to fix my PSU. Silverstone 350W

He means samwha, not samxon. I see them on the right in that picture next to that big resistor there.

[Wizard]

Re: My turn to fix my PSU. Silverstone 350W

Nope. ULR line from Samxon. I know the other smaller two is not polymer, I do not have any in 47uF 50V and I did test them before reusing them, I know these are Samwha. I have no problem with these. Keep in mind Shawha is very *specific* batch run were bad that caused capacitors to bloat while rest are fine.

Cheers, Wizard

[Wizard]

Re: My turn to fix my PSU. Silverstone 350W

Hehehe, I know my english is not my strong point and I have to redo several time on writing, I'm deaf guy but you should see that I do have full-time job repairing TVs.

Regarding Samxon capacitors, they are good one. And this is biggest reason for strictly sourcing these we do not like buying stuff from multiple suppliers and especially from USA due to shipping and customs taxes & broker fees.

I do not understand the surprise and disgust of Samxon, actually is good one as long as you get them from trusted sources and all of you have good sources right here and use correct series in specific applications. So far, with our work, there is NO callbacks with Samxon capacitors in TVs, electronics and other stuff for 2 years now. Ones that co-coworker against my advice used generic capacitors and came back bloated again, no ifs or buts. And I do not use GF either due to fakes and one of my source is concerned about those Samxon fakes.

There are many good and high end PSUs using polymer capacitors these days. So what?, do your research. Don't be acting like a deer standing there outlined by headlights.

Oh yes, I maintain my plymouth voyager 1987 caravan. Yes ditto rebuilding a 2.5L and swap old sick 2.2L once I have enough money.

Cheers, Wizard

[POM_MJ]

Re: My turn to fix my PSU. Silverstone 350W

Nope. ULR line from Samxon. I know the other smaller two is not polymer, I do not have any in 47uF 50V and I did test them before reusing them, I know these are Samwha. I have no problem with these. Keep in mind Shawha is very *specific* batch run were bad that caused capacitors to bloat while rest are fine.

Cheers, Wizard

Agreed, ULR is polymer from X-CON (Samxon) http://capacitor.web.fc2.com/solidcapacitor.html#xcon

Good job there, I will do polymod my PSU like that soon.

[Scenic]

Re: My turn to fix my PSU. Silverstone 350W

uhm.. with engrish i meant the fuse text at the bottom of the PCB... not your post

[Wizard]

Re: My turn to fix my PSU. Silverstone 350W

Hahaha. Now I get that.

Cheers, Wizard

[b700029]

Re: My turn to fix my PSU. Silverstone 350W

Whoever drew the board probably thought "this text is too long to fit... so I'll just cut off some piece of it". I have no idea why they even keep that message since almost no one is going to read it 99% of the time.

[c_hegge]

Re: My turn to fix my PSU. Silverstone 350W

Personally, I don't like the idea of poly-moddiong a PSU, since the PI filters are tuned to the ESR of the original caps. Polys will have a significantly lower ESR, which will make the ripple a lot worse. PSUs which have polymer caps when new can function that way because they were designed around polys.

[kaboom]

Re: My turn to fix my PSU. Silverstone 350W

Personally, I don't like the idea of poly-moddiong a PSU, since the PI filters are tuned to the ESR of the original caps. Polys will have a significantly lower ESR, which will make the ripple a lot worse. PSUs which have polymer caps when new can function that way because they were designed around polys.

Bingo.

[Th3_uN1Qu3]

Re: My turn to fix my PSU. Silverstone 350W

Personally, I don't like the idea of poly-moddiong a PSU since the PI filters are tuned to the ESR of the original caps.

But the standby switcher is usually of the self-oscillating type. Therefore it tunes itself to the output filter, not the other way around. Also if you really want to get a technical explanation, it's the control loop that is tuned for a specific filter. Changing the caps with drastically different ones could cause the control loop to oscillate.