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Re: A tale of two PSUs

Posted on 2020-07-25, 11:43

The codegen should be used only for parts. It has absolutely no input filtering, this means that the EMI/RFI noise coming from the mains will pass on the output voltages and could cause issues with the computer operation, especially the sound card and the opposite, any electrical noise caused from …

Re: A tale of two PSUs

Posted on 2020-02-23, 00:50

by wave

in Marvin \ General Old Hardware

Please make sure this is not the bestec model that kills mobos, having 5vsb going as high as 13V!

Re: A tale of two PSUs

Posted on 2019-05-01, 16:38

by wave

in Marvin \ General Old Hardware

Crapxon are terrible capacitors and I always replace on sight. Only the main voltage caps 200V/400V/450V are ok.

Re: A tale of two PSUs

Posted on 2019-03-25, 13:24

by wave

in Marvin \ General Old Hardware

The component psu is FSP. You can tell by the IC. FSP is a known and reputable OEM. Definitely worth recapping/repairing if needed

Re: A tale of two PSUs

Posted on 2019-03-25, 00:29

by wave

in Marvin \ General Old Hardware

The identical goal would be to keep electronic parts temperature as stable as possible. I would keep the fan controller and do some load/temperature tests as I have done in the past with ATX psus. If I find the fan controller to be too conservative, then I would put a resistor in parallel with …

Re: A tale of two PSUs

Posted on 2019-03-24, 23:54

by wave

in Marvin \ General Old Hardware

As far as I know, ripple can be measured only with a scope. Enermax was a reputable manufacturer back then, I wouldn't connect the fan they way you did, and also try to keep the fan controller enabled because the fan's life will shorten dramatically if constantly run at full speed.

Re: A tale of two PSUs

Posted on 2019-03-24, 23:43

by wave

in Marvin \ General Old Hardware

You can't really measure ripple with multi-meter, as the multimeter is too slow to catch and show you any kind of ripple. Ripple in smps is high frequency (20KHZ and more) and the multimeter would barely be able to show some fluctuations in voltage. Btw trying to measure ripple both with multimeter …

Re: A tale of two PSUs

Posted on 2018-05-22, 16:23

by wave

in Marvin \ General Old Hardware

it's a deer. not a bad one, needs recap and some other modifications

Re: A tale of two PSUs

Posted on 2018-04-19, 22:43

by wave

in Marvin \ General Old Hardware

Yes, it is

Re: A tale of two PSUs

Posted on 2016-09-30, 22:50

by wave

in Marvin \ General Old Hardware

If I had to choose 1 of them I would definitely pick that: http://bulk.fsp-europe.com/spi-250g But notice the efficiency. It's just 65%. You shouldn't expect to be a premium quality psu.

Re: A tale of two PSUs

Posted on 2016-02-20, 09:33

by wave

in Marvin \ General Old Hardware

The critical 5vsb capacitor is a small cap located in the primary section. It's usually a 22uF / 47uF 50V. Not every psu has the 2 transistor circuit that relies to that cap to function properly. This psu has 2 transistor circuit through.

Re: A tale of two PSUs

Posted on 2016-02-19, 21:02

by wave

in Marvin \ General Old Hardware

Please locate the 5vsb critical cap and replace it immediately with GOOD brand capacitor. If this cap's esr goes high the 5vsb output voltage could skyrocket to... 12V (!) and kill your mobo.

Re: A tale of two PSUs

Posted on 2016-01-31, 14:17

by wave

in Marvin \ General Old Hardware

Well done. Excellent work

Re: A tale of two PSUs

Posted on 2016-01-30, 21:50

by wave

in Marvin \ General Old Hardware

This is an old design. The add on board is probably active pfc. The psu seems to have a full AC filter. The blurriness of the photos is too damn high 😜 Does it work if you short green to black with a paperclip?

Re: A tale of two PSUs

Posted on 2016-01-30, 11:18

by wave

in Marvin \ General Old Hardware

Please post some high resolution well focused pictures of tne psu

Re: A tale of two PSUs

Posted on 2016-01-22, 23:28

by wave

in Marvin \ General Old Hardware

This is correct. I was reffering to the tiny caps on the secondary that are usually placed near the TL494 KA7500 sg6105d and the supervisor ICs. Those are not critical. The 2 small caps that polarize the switching transistors are important. And even more important is the 5vsb critical cap (its value …

Re: A tale of two PSUs

Posted on 2016-01-22, 21:31

by wave

in Marvin \ General Old Hardware

I have recapped and modded 3 psus from that series. I created a thread about that on badcaps. I will post a link as soon as badcaps is up again :) http://www.badcaps.net/forum/showthread.php?t=34418 http://www.badcaps.net/forum/showthread.php?t=46555 First of all that add on board needs to go: …