"Delta Power" MAX-500ATX 450W power supply (not real Delta)

[370forlife]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

>Any more comments?

it's peculiar to put godo components to these crap psus.
nest up it'll blow the main switcher, then you swap that too.
after that transformer will melt, will you fix that too?
hehe...you get the point...

what you did helps it somewhat, but only real help for it is garbage dumpster.

See the thread about my yuelin, I covered all those points and more.

[ratdude747]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

yeah but if you cant trust it then whats the use?

[i4004]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

>See the thread about my yuelin, I covered all those points and more.

but did you send it to jonny to stack it against simillar fsp model and then see what hapens on prolonged full-load?
<wink>

[JACKSON]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

Newbie2:
I have this powersupply in my desktop for 1year and 9 monthes. The big coil between wiring bundle and heatsink (T90-XXXXX) has been black and short between wires. Can you please tell the p/n for this coil? I hope to replace it or I have to buy a new PS.
This unit if very noising!

[370forlife]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

Newbie2:
I have this powersupply in my desktop for 1year and 9 monthes. The big coil between wiring bundle and heatsink (T90-XXXXX) has been black and short between wires. Can you please tell the p/n for this coil? I hope to replace it or I have to buy a new PS.
This unit if very noising!

Good luck getting a new one. If you have another cheap power supply to take apart, try getting it out, BUT make sure you put the correct legs in the correct holes. Usually it is silkscreened underneath the coil.

[momaka]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

I hope to replace it or I have to buy a new PS.
This unit if very noising!

Unless your power supply looks better than the one on the first page, I would recommend you get a new power supply. A burned coil could mean there is something seriously wrong with the power supply.
I mean if you really really want to fix it for learning purposes, you can get a coil from another power supply like 370forlife said, or if you have copper wire you can rewind the coil. Keep in mind that any such modifications to the power supply can make it a fire hazard (especially if it's not working correctly in the first place).
With that said, I still recommend you get a new power supply (and maybe keep this one for random spare parts if you like).

[370forlife]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

Unless your power supply looks better than the one on the first page, I would recommend you get a new power supply. A burned coil could mean there is something seriously wrong with the power supply.
I mean if you really really want to fix it for learning purposes, you can get a coil from another power supply like 370forlife said, or if you have copper wire you can rewind the coil. Keep in mind that any such modifications to the power supply can make it a fire hazard (especially if it's not working correctly in the first place).
With that said, I still recommend you get a new power supply (and maybe keep this one for random spare parts if you like).

I'm sure sunpro would just jumperwire right through it...

I think your right, it would just get a new power supply (a quality one, not another one of these works of art...) putting a in a new coil is pretty hard to do.

[Newbie2]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

Sorry for reviving my old thread, but here are the voltage readings of this power supply from my Celeron 2.2GHz PC:

Multimeter voltage readings:
+12V: 12.21V
+5V: 5.16V
+3.3V: 3.43V

Motherboard voltage readings:
-12V: -11.62V
+5VSB: 5.10V

Also, the voltage readings were taken with the PC under 100% CPU load from Prime95.

[ratdude747]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

nice! thats good, considering the level of S*** that thing was!

[370forlife]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

I've think sunpro is kind of the step up from their parent company, leadman. Not much of a step, but a step none the less.

Too bad most sunpro's are just rebranded leadman's now. At least leadman uses their "saftey series" power supplies with input filters and bridge rectifiers now. But their thermal fans cause the caps to blow up within a matter of hours.

[Newbie2]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

Today, due to curiosity, I actually hooked up this power supply very quickly to my main system, and surprisingly it powered up without any problems and booted into Windows. The voltage readings I took from my multimeter for this cheap power supply for the +12V and +5V rails were actually good, I think 12.23V and 5.15V at POST. A PCI-E power adapter to convert two 4-pin peripheral connectors to the 6-pin PCI-E power connector was used for my GeForce 9600GT video card.

Here are the specifications of my main system:
Intel Pentium Dual Core E2180 2.0GHz @ 3.006GHz, 1336MHz FSB (Socket 775)
8GB SUPER*TALENT T800UX4GC5 PC6400 DDR2-800 RAM (4x2GB in dual channel @ 802MHz, 2 kits installed)
GIGABYTE GA-P35-S3G motherboard
EVGA NVIDIA e-GeForce 9600GT 512MB DDR3 PCI-E 16x Superclocked video card
1TB WD Caviar Green 10EAVS SATA-II Hard Drive
Antec EarthWatts 80 PLUS 380W Power Supply
Microsoft Windows 7 Home Premium (OEM) x64
Antec New Solution NSK4480 Mini Tower case

My computer is now back on its Antec power supply, but now I know that this power supply could actually work as a backup PSU for it.

[Newbie2]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

For two months now, this Delta Power power supply has been powering this system, ever since its Enermax 300W power supply developed problems:

Intel Pentium 4 3.2GHz processor (Prescott, Socket 478)
1.5GB DDR RAM (1x512MB PC3200 and 1x1GB PC3200 mix 'n match, running at PC2700 speed)
PCCHIPS M955G motherboard
Sapphire ATI Radeon HD3650 512MB DDR2 AGP 8X video card
250GB WD Caviar PATA Hard Drive
Microsoft Windows 7 Ultimate x86 (32-bit)

The Enermax 300W that used to power this system somehow gave it stability issues, the PC would freeze when CoD4 or any other 3D intensive application was launched. Swapped out the power supplies with this rebuilt "450W" Delta Power, and it solved the issues.

All voltages are stable and the PC runs perfectly.

[momaka]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

Looking back at the initial pictures on page 1, I still get chills when I see this power supply (mostly because of the tiny heatsinks). But I guess you must have done a pretty good job with this PSU because running a 3.2GHz P4 for 2 months is not bad at all.
Check the 5vsb every once in a while, though (like once a month or something).
How's the heat output, by the way?

[stj]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

tiny heatsinks are fine with a good fan,

you only need to be concerned if it has a stupid fanspeed crippler(controller)

[370forlife]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

Looking back at the initial pictures on page 1, I still get chills when I see this power supply (mostly because of the tiny heatsinks). But I guess you must have done a pretty good job with this PSU because running a 3.2GHz P4 for 2 months is not bad at all. Check the 5vsb every once in a while, though (like once a month or something). How's the heat output, by the way?

Concerns me too. I would up the capacity of the secondary rectifiers to ensure they don't blow and take out your hardware and to cut down on heat.

[momaka]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

370forlife: I think Newbie2 did change the rectifiers. Each rail has 30A capacity, even the 12v rail. Should be enough for the P4.

stj: I doubt those cheap PSUs have fan controllers (or cripplers as you call them ). I still prefer thicker heatsinks with a slightly slower fan, though.

[c_hegge]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

Looking back at the initial pictures on page 1, I still get chills when I see this power supply (mostly because of the tiny heatsinks).

I wouldn't call those heatsinks tiny. I've seen a lot of PSUs that run just fine with heatsinks with half the surface area of these.

[370forlife]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

I just realized there are no pi filters in this design. Does that mean lower-ESR caps can reduce ripple in this case?

[Wizard]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

C-L-C filter (aka Pi filter) is best or build a small board with these if you are hobbyist with electronics otherwise look for another PSU with these.

Cheers, Wizard

[momaka]

Re: "Delta Power" MAX-500ATX 450W power supply (not real Delta)

I wouldn't call those heatsinks tiny. I've seen a lot of PSUs that run just fine with heatsinks with half the surface area of these.

It's no the size of surface area that worries me on this one but the base thickness. If the base is not thick enough, heat from the silicon parts most likely won't reach that surface area on top. Thicker heatsinks also have more capacity to absorb sudden changes in temperature.

I just realized there are no pi filters in this design. Does that mean lower-ESR caps can reduce ripple in this case?

Been wondering the same thing. I have a strong feeling that this article might answer that question:
https://cdn.badcaps-static.com/pdfs/...0a5b4a973d.pdf