Power Supply FSP FSP500-30AS Modular Flex PSU from GEEEK, anyone have one?

[milesvw]

A slightly larger 'SFF', the CM NR200 was on sale for $55 and I jumped.

The FSP500 fits with a random bracket I had laying around from a different PSU.
Very simple to make however. With a different right angle power cord it could probably come above the level of most GPU, but as it is I measured well over 250mm from the I/O to the PSU.

An old slot cover for a bottom bracket.

 

[sanakess]

@dukedevil0 - I have it open but I don't really know what I'm looking for, here's some quick pics.

Hi. Your photos very helpful. Can u make some photos of back side of dc-dc board where wires soldered?

 

[vinnyoflegend]

Hi. Your photos very helpful. Can u make some photos of back side of dc-dc board where wires soldered?

Did you make your own board by the way? I don't think I've seen it that one before, I remember seeing these on aliexpress https://www.aliexpress.com/i/3256801127647593.html?gatewayAdapt=4itemAdapt

 

[sanakess]

Did you make your own board by the way? I don't think I've seen it that one before, I remember seeing these on aliexpress https://www.aliexpress.com/i/3256801127647593.html?gatewayAdapt=4itemAdapt

Yeah i buy it from a guy on site like craiglist) He made it by himself and had a unique layout.

That's strange, I had guessed the -12V is the culprit.

Maybe you still can check the voltages with a multimeter when it's connected to your motherboard?

And now im happy to say i solved psu problem. 5v line was incorrectly soldered to wrong pin of induction. It cause overloading 5v line and shuts psu down. Thx to photos i found here with Geeek moded psu. Im resolder 5v output, and psu works perfectly

 

[vinnyoflegend]

Yeah i buy it from a guy on site like craiglist) He made it by himself and had a unique layout.


And now im happy to say i solved psu problem. 5v line was incorrectly soldered to wrong pin of induction. It cause overloading 5v line and shuts psu down. Thx to photos i found here with Geeek moded psu. Im resolder 5v output, and psu works perfectly

Interesting. Were you using both pins? One for each wire? I’m going to have to open up the ones I modded to check but either location should work but I think I have only ever used one location at a time, never both for different 5v wires.

 

[sanakess]

Interesting. Were you using both pins? One for each wire? I’m going to have to open up the ones I modded to check but either location should work but I think I have only ever used one location at a time, never both for different 5v wires.

No, im using first time only red pin circle (both cables) and have issues with it, but after im resolder to blue, psu works well

 

[sanakess]

I believe i found the issue and its my soldering - checked again because i was confused why mobo RGB would come on (implying that PSU works) but the actual PC wouldnt - checked my soldering, and the wires came off with an easy, well grab i guess they came off very easily and there was a lot of oxidization. gonna find a guide on how to solder properly and buy all the necessary tools and supplies required instead of kind of half assing it.

i think there are the same problem as me. psu can give 5v to led on mobo, but overloading then mobo starts

 

[milesvw]

I am currently testing Jingyue B650 motherboards and notice that they do not turn on at all with one of these.
Sometimes I see the fan twitch on the PSU.
Is it possible some motherboards just don't hold the PS On in a way the PSU likes? Is there a way to latch it until the PSU and motherboard are happy?

I've run the 30AS on quite a few motherboards and most of them seem to like it. It's running a 12700KF and RTX 3080 in a name brand H670 ITX right now.

 

[vinnyoflegend]

Could it be the Jgingyue boards want PWR OK/GOOD? If I recall you skipped that one too and didn’t split it off of the 5v rail right?

For anyone curious here's the list of boards I've run without issue so far on this modded PSU (and I'm just using 11-12 wires )
Socket 8 Intel VS440FX
Socket 370 Abit AB-BM6
Socket 478 Intel BI440ZX
Socket A MSI K7T Turbo2
Socket A Asus A7V133
LGA1150 Asus Z97I-Plus
LGA1151 Asus B360I ROG Strix
AM4 MSI B550I Gaming Edge Wifi
AM4 MSI B550M VC Wifi
LGA1700 Asus Z790M Plus D4

 

[milesvw]

Could it be the Jgingyue boards want PWR OK/GOOD? If I recall you skipped that one too and didn’t split it off of the 5v rail right?

I made a new 24-pin cord and it has the PW Good signal tied to 5v. Didn't change the results. If I jumper the green wire manually and press the computer power button it will stay on. I waited a few minutes and pulled the jumper wire out, it stayed on.

Ran a good 30 mins of stress tests on the Ryzen 7700. The iGPU is nothing crazy, but it seems like it would play some casual games on low/medium 720p no problem.

I was also testing a Lian Li 360mm AIO I picked up for $25. I should have bought more while the seller was unloading them .

 

[vinnyoflegend]

I made a new 24-pin cord and it has the PW Good signal tied to 5v. Didn't change the results. If I jumper the green wire manually and press the computer power button it will stay on. I waited a few minutes and pulled the jumper wire out, it stayed on.

Ran a good 30 mins of stress tests on the Ryzen 7700. The iGPU is nothing crazy, but it seems like it would play some casual games on low/medium 720p no problem.

I was also testing a Lian Li 360mm AIO I picked up for $25. I should have bought more while the seller was unloading them .

Strange, I wonder what the few minutes is doing, what if you ran PWR GOOD split off of the 5VSB? I think that violates the spec of PWR GOOD coming on a certain time after PSON but maybe would be similar to keeping the PSU on long enough?

That's an awesome price for a 360mm AIO, where was that?

 

[milesvw]

Strange, I wonder what the few minutes is doing, what if you ran PWR GOOD split off of the 5VSB? I think that violates the spec of PWR GOOD coming on a certain time after PSON but maybe would be similar to keeping the PSU on long enough?

I did run the PWR good off the 5VSB, but maybe a pre-programmed delay? I guess I should test it.

That's an awesome price for a 360mm AIO, where was that?

They sold out on eBay , should have bought more.

 

[vinnyoflegend]

I did run the PWR good off the 5VSB, but maybe a pre-programmed delay? I guess I should test it.

Oh, so you didn't try PWR GOOD/OK off of the non-SB 5V first ? I would think that rail getting pulled up after PSON would be closer to the spec than the constant 5VSB.

 

[milesvw]

Oh, so you didn't try PWR GOOD/OK off of the non-SB 5V first ? I would think that rail getting pulled up after PSON would be closer to the spec than the constant 5VSB.

I mis-spoke, it was 5V regular, not 5VSB.

Also the AIO seller has an actual Lian Li Galahad on sale for $27, not the MicroCenter ALC360 plastic model I picked up: https://www.ebay.com/itm/204661410243

 

[fncalderong]

Hello folks! I have a quick question. I just need the 8 pins connector for powering a specific piece of hardware. Can I do it? Or should I jumper some pines to make it work? Thanks in advanced!

 

[vinnyoflegend]

As long as you’re able to connect PWRON to GND then the 8p CPU and 8p PCIE connectors will be live.

 

[fncalderong]

As long as you’re able to connect PWRON to GND then the 8p CPU and 8p PCIE connectors will be live.

Thanks for your help, so I must jumper the 2nd and the 3rd on the 10 pin connector right?
_________Latch__________
3.3v Gnd PWOn Gnd Gnd
3.3v Gnd 5Vsb 12v 12v
________________________

 

[DASBOOT]

Specifically, this happens when you connect the 24-pin automatically to its corresponding female Molex and only when a processor and RAM on a motherboard are installed to put a load signal to the PS. The momentary power button closes the start-up circuit, and if a load draw is sensed, ie, the "power-good circuit", then it initiates, within 100-500ms, and the power supply will stay on until it is shut off.
There are live wires on the output side of a PC power supply when it is plugged into the wall, but if the power good circuit is not signaled or manually closed, (no output cables plugged in at all), it will not turn on. (8 pin alone has no power-good sense circuitry.
Pwron to ground is a technique used to force a PC power supply on an all-the-time connection for almost all power supplies except always-on variants.

 

[fncalderong]

Specifically, this happens when you connect the 24-pin automatically to its corresponding female Molex and only when a processor and RAM on a motherboard are installed to put a load signal to the PS. The momentary power button closes the start-up circuit, and if a load draw is sensed, ie, the "power-good circuit", then it initiates, within 100-500ms, and the power supply will stay on until it is shut off.
There are live wires on the output side of a PC power supply when it is plugged into the wall, but if the power good circuit is not signaled or manually closed, (no output cables plugged in at all), it will not turn on. (8 pin alone has no power-good sense circuitry.
Pwron to ground is a technique used to force a PC power supply on an all-the-time connection for almost all power supplies except always-on variants.

Thanks for such a good explanation. I want to manually close the power good circuit to get energy from the 8 pin connector. Do you know how can I do it on the FSP500-30AS the original one. I see it has a 10 pin connector, is there where I need to jumper it?

 

[DASBOOT]

3.3v sense to ground sense on the 10-pin. Correct me if I am wrong, please. If it is not modular, you can use 24 24-pin harness and std location for 3.3 and grd.

3. Identify the Green and Black Wires:

• Locate the green wire (power-on signal) and a black wire (ground) on the 24-pin connector.
• If all wires are black, place the connector with the lock clip facing up and then short 4th and 5th pins (counting from left to right) in the upper row. at the end of the 20+4 pin cable for this power supply.
• Do not short the wrong pins: Jumping the wrong pins can damage the PSU or other components.