Huntkey Green Star 450 W Power Supply Review

**Hardware Secrets Team** · 03-07-2008, 03:42 PM

There has been a new article posted.

Title: Huntkey Green Star 450 W Power Supply Review
URL: http://www.hardwaresecrets.com/article/527

Here is a snippet:
"Huntkey is a brand that isn't known by the North-American audience but it is somewhat popular in other countries, due to the low cost of its products. Huntkey manufactures some power supplies for othe..."

Comments on this article are welcome.

Best regards,
Hardware Secrets Team
http://www.hardwaresecrets.com

Spectre · 03-08-2008, 07:57 AM

Hey Gabe, I noticed a small problem with the review. You can't support this claim with the data you presented:

Quote:

But even if we respected the 286 W limit we would explode this power supply anyway, because what burned were the switching transistors, so the problem was the total load, not the individual loads on the secondary side (otherwise we would have burned components on the secondary side, not on the primary side).

You blew the unit up outside of its rated specification when it actually did do more than its rated 12v load in Test #4 when 12v1 was loaded to 13A and 12v2 was loaded to 12.5A for a total 12v load of 25.5A (306w) which is 20w above what it is rated for. Since the unit did do its 12v rated capacity did you get a second sample to see if the unit would do its full DC output capacity when loaded within specifications before pushing it beyond its specifications?

**Gabriel Torres** · 03-09-2008, 08:13 AM

Hi,

You may be right. However, if this was the case I would have blown the secondary rectifiers. What exploded were the switching transistors. Also, if it was overloaded, the OPP should activate and shut down the unit, don't you agree?

Cheers,
Gabriel.

**Gabriel Torres** · 03-11-2008, 07:42 AM

Hi guys,

Here are the pictures of inside the power supply after it exploded. The first one shows the PSU housing below the PCB, the second one shows the solder side of PCB, where you can see two SMD resistors that exploded (pointed out with the red arrows). Compare them to the resistors right below them to see the difference.

Cheers,
Gabriel.

**Gabriel Torres** · 03-11-2008, 06:03 PM

Hi,

When we first posted this review we said that this power supply didn't have a MOV. In fact it has two MOV's but since they are located in a non-traditional location (after the rectifying bridge and not before as usual) we didn't see them at the first time we disassembled this unit. We ask you our sincere apologies for this mistake.

You can see the location of the two MOV's on the picture below.

Cheers,
Gabriel.

**Gabriel Torres** · 03-12-2008, 03:50 PM

Hi,

Just to let you guys know that I am buying another Green Star 450 W and will retest it with a different current configuration. Please be patient.

Thanks
Gabriel.

Spectre · 03-14-2008, 11:39 AM

Quote:

Originally Posted by Gabriel Torres

Hi,

You may be right. However, if this was the case I would have blown the secondary rectifiers. What exploded were the switching transistors. Also, if it was overloaded, the OPP should activate and shut down the unit, don't you agree?

Cheers,
Gabriel.

Yes but what I was saying is the unit did do more than 286w on the 12v rails. So saying if you ran it at 286w on the 12v rails it would have exploded is contradictory to the data presented.

I was also going to say if one blows up (or fails in anyway) I test another one (which also means it takes me a while to do reviews) to make sure I didn't get a bad unit just to be fair, but I see you are already working on getting another. This one may very well fail as well but at least then it can't be chalked up to a bad unit

**Gabriel Torres** · 03-14-2008, 12:18 PM

Thanks for you nice feedback, as always.

You are absolutely right and I will use the procedure you are suggesting from now on, i.e. if a PSU burns around here I will test a second one to make sure that it was due to a design flaw and not to a bad unit.

Cheers,
Gabriel.

**Gabriel Torres** · 03-24-2008, 03:08 PM

As I promised I bought another Huntkey Green Star 450 W power supply to redo the 450 W load test using another load pattern. The result? Absolutely the same. Huntkey Green Star 450 W is in fact a 360 W power supply that explodes if you try to pull 450 W from it. This time we taped the test in order to prove our claims. Click here to read the updated review, including the video.

Best regards,
Gabriel Torres

Spectre · 03-25-2008, 07:12 AM

Now its a piece of peak rated crap.

03-07-2008, 03:42 PM	#1
Hardware Secrets Team Administrator Join Date: Nov 2004 Posts: 3,155	Huntkey Green Star 450 W Power Supply Review There has been a new article posted. Title: Huntkey Green Star 450 W Power Supply Review URL: http://www.hardwaresecrets.com/article/527 Here is a snippet: "Huntkey is a brand that isn't known by the North-American audience but it is somewhat popular in other countries, due to the low cost of its products. Huntkey manufactures some power supplies for othe..." Comments on this article are welcome. Best regards, Hardware Secrets Team http://www.hardwaresecrets.com

03-09-2008, 08:13 AM	#3
Gabriel Torres Administrator Join Date: Oct 2004 USA Posts: 2,605	Hi, You may be right. However, if this was the case I would have blown the secondary rectifiers. What exploded were the switching transistors. Also, if it was overloaded, the OPP should activate and shut down the unit, don't you agree? Cheers, Gabriel. Last edited by Gabriel Torres; 03-09-2008 at 08:29 AM.

03-11-2008, 06:03 PM	#5
Gabriel Torres Administrator Join Date: Oct 2004 USA Posts: 2,605	Hi, When we first posted this review we said that this power supply didn't have a MOV. In fact it has two MOV's but since they are located in a non-traditional location (after the rectifying bridge and not before as usual) we didn't see them at the first time we disassembled this unit. We ask you our sincere apologies for this mistake. You can see the location of the two MOV's on the picture below. Cheers, Gabriel. Attached Thumbnails

03-25-2008, 07:12 AM	#10
Spectre Junior Member Join Date: Feb 2008 Posts: 17	Now its a piece of peak rated crap. __________________ Paul Johnson [H]ardOCP PSU Editor

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03-11-2008, 07:42 AM	#4
Gabriel Torres Administrator Join Date: Oct 2004 USA Posts: 2,605	Hi guys, Here are the pictures of inside the power supply after it exploded. The first one shows the PSU housing below the PCB, the second one shows the solder side of PCB, where you can see two SMD resistors that exploded (pointed out with the red arrows). Compare them to the resistors right below them to see the difference. Cheers, Gabriel. Attached Thumbnails

03-12-2008, 03:50 PM	#6
Gabriel Torres Administrator Join Date: Oct 2004 USA Posts: 2,605	Hi, Just to let you guys know that I am buying another Green Star 450 W and will retest it with a different current configuration. Please be patient. Thanks Gabriel.

03-14-2008, 12:18 PM	#8
Gabriel Torres Administrator Join Date: Oct 2004 USA Posts: 2,605	Thanks for you nice feedback, as always. You are absolutely right and I will use the procedure you are suggesting from now on, i.e. if a PSU burns around here I will test a second one to make sure that it was due to a design flaw and not to a bad unit. Cheers, Gabriel.

03-24-2008, 03:08 PM	#9
Gabriel Torres Administrator Join Date: Oct 2004 USA Posts: 2,605	As I promised I bought another Huntkey Green Star 450 W power supply to redo the 450 W load test using another load pattern. The result? Absolutely the same. Huntkey Green Star 450 W is in fact a 360 W power supply that explodes if you try to pull 450 W from it. This time we taped the test in order to prove our claims. Click here to read the updated review, including the video. Best regards, Gabriel Torres

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