Xtreme Gear PSAZ-600

[goodpsusearch]

Re: Xtreme Gear PSAZ-600

Yeah I'd call it a 275W PSU. I don't know why they even bother with the ceramic discs. If you're going to make crap, just leave it completely empty

If you update the primary caps to 680uF it can do 350W:
Switching transistors are good sized TO-3P D209L, heatsinks are thick enough and designed for 120mm fan cooling and the transformer is real ERL 35.

I think a 30a schottky for 12v rail and it would be usable for a new PC if it doesn't crossload because of the light 5v usage

+1

I would absolutely add a 30A schottky rectifier for 12V rail.

I have a Linkworld psu like that in my "for service" pile of power supplies, but I have been too busy to play with it. I remember the metal case was ridiculously thin.

[Drack]

Re: Xtreme Gear PSAZ-600

The first PSU I fixed was a gutless that had no line filtering and a dead fan, changed the fan and added 2 y caps one x and one coil

[everell]

Re: Xtreme Gear PSAZ-600

I am mainly after "obscure" PSUs that I have never seen.

Let me know which "obscure" PSU you have never seen......maybe I have one and can send it to you.

[Pentium4]

Re: Xtreme Gear PSAZ-600

If you have doubled that collection, I'm amazed and impressed! I am mainly after "obscure" PSUs that I have never seen. And believe it or not...I love refurbishing Sun Pro units. Shame they went out of business

[everell]

Re: Xtreme Gear PSAZ-600

The reason I began fixing computer power supplies in 2009 is because I wanted to learn what was wrong when they went bad such that computer shops won't repair them, but simply trash and replace. I have come to believe that if you are daring enough to fix just one computer power supply, you have become an expert electronics technician ......... unless the first one you fix is a Bestec ATX-250 12E. That was the first one I fixed and everyone started throwing chairs at me!!! The general opinion was that this model power supply was the worst in existence, a mother board killer, and total trash, certainly not worth fixing. Well......that power supply is still working, powering a computer with AMD cpu (Pentium 3 class). I still use it for playing music, mp3 files, and playing freecell cards. Why throw the psu away, or the "old" dinosaur computer. Still works fine!

Meanwhile, I think my collection in the attic has doubled from the picture I posted some time ago. So..............Pentium4, if you run out of psu's to fix just let me know!!!!!!!!!!!!!!!

[Drack]

Re: Xtreme Gear PSAZ-600

Great job, as always!
Remember those resistors are the minimum load needed for stability at minimal or no load conditions, i wouldn't attempt to explain exactly why they need a minimum load because there are too many things involved and don't even fully comprehend half of them but each design reacts different when changed, some give crazy voltages but stay on (usually crappy ones), others shut down after a couple of seconds or right away as yours.
If the power distribution from the 12V rails is right this PSU fits a niche where only a couple of amps are needed from the 6-pin PCIe connector to feed a mainstream GPU like GTX 950/1050Ti and that may explain the 20A rectifier in 12V, so you were right, it's great for HTPC.

I have heard that some PSUs went kaboom when the didn't have load, and that's why they are there on some PSUs.
Agreed with you but I will use a 1050 or an Rx 460, less power consumption imagine 65w CPU, 75w GPU, 12w HDD, 20w ram and vrm looses, 12w on fans that's close to 15.33 amps on a part that should not exceed 70% usage and 70% of a 20a part is 14a, or that's what I have heard or read on some places like hardware secrets
Or something like an r9 270, that's 120w power consumption with peaks at 150w and it only uses one 6pin, I want you guys to know that I respect you and I'm smart enough to know that you know more than me on psus so, I'm just saying not trying to piss you off with my comment

[SIDMX]

Re: Xtreme Gear PSAZ-600

You were right! I hooked it up to a system and it powered up no problem. It just didn't have enough load with just a paperclip... Yes it indeed only has that one 20A schottky for 12V.

Great job, as always!
Remember those resistors are the minimum load needed for stability at minimal or no load conditions, i wouldn't attempt to explain exactly why they need a minimum load because there are too many things involved and don't even fully comprehend half of them but each design reacts different when changed, some give crazy voltages but stay on (usually crappy ones), others shut down after a couple of seconds or right away as yours.
If the power distribution from the 12V rails is right this PSU fits a niche where only a couple of amps are needed from the 6-pin PCIe connector to feed a mainstream GPU like GTX 950/1050Ti and that may explain the 20A rectifier in 12V, so you were right, it's great for HTPC.

[Pentium4]

Re: Xtreme Gear PSAZ-600

Thanks. I used nichicon PW, Panasonic FC, Rubycon YXF for the little caps. 1200uF 6.3V Chemi-Con KY for 5VSB, 3300uF 10V Rubycon PX for 5V and 3.3V, 2200uF 16V Chemi-Con KYB for 12V, nichicon PW for -12V.

[Drack]

Re: Xtreme Gear PSAZ-600

Nice job, those where the minimum load resistor some PSU are kind of a ehh Wells bitches with those, what caps did you use?

[Pentium4]

Re: Xtreme Gear PSAZ-600

You were right! I hooked it up to a system and it powered up no problem. It just didn't have enough load with just a paperclip. Since the fan spins so slow, I'm glad I changed out the resistors. They will be putting out a lot less heat and increase the efficiency a little. Yes it indeed only has that one 20A schottky for 12V.

[SIDMX]

Re: Xtreme Gear PSAZ-600

It may be the resistor change, try to put some load in 5V and 12V rails, if that fails and you're absolutely sure that there is no solder bridge, then put original resistors and try again, also re-check caps polarity.

That's what i do when it happens to me

First of all, SIDMX, I'm an idiot! I was looking at a different PSU. This one does have two 12V rails with shunts!

so maybe i'm guessing it's wattage wrong, but then again it's no purpose to put a 20A rectifier in a 2 rail psu, are sure it only uses one 20A rectifier?

[Pentium4]

Re: Xtreme Gear PSAZ-600

First of all, SIDMX, I'm an idiot! I was looking at a different PSU. This one does have two 12V rails with shunts!


I added an input filter and recapped it. I also replaced all of the 47 ohm resistors on the rails for 200 ohm. However, I think I did something wrong because the PSU just ticks the fan upon hitting power now.

I know it has nothing to do with the input, because after adding the input filter and permanent 115V wiring, I tested it and saw that it powered up and was running. So it has to do with something I did while replacing caps and resistors. Couldn't be the resistor change, could it?

[Pentium4]

Re: Xtreme Gear PSAZ-600

Powerfull enough for even something a little bit more demanding I would say, so you recaped this? does it have two 12V rails or is it a single rail design?

Yeah. I really love silent PSUs for HTPC though Sorry, I forgot to answer your question. I haven't touched it yet, I just desoldered the AC wires to take pictures, and it is just a single 12V rail with no shunts.

[SIDMX]

Re: Xtreme Gear PSAZ-600

...It's powerful enough to power a HTPC. This thing is seriously so silent that it would be great for that application.

Powerfull enough for even something a little bit more demanding I would say, so you recaped this? does it have two 12V rails or is it a single rail design?

[Pentium4]

Re: Xtreme Gear PSAZ-600

IDK but he must be on a quest to recap every single PSU in the USA ...I know someone who even tried to import them from brazil

He must indeed lol
I have an obsession for repairing anything I can too, but you won by a lot p4
Es raro conseguir a un latino por acá sidmx

No, everell wins. But yes, I do have a large amount of PSUs


Whether you're going to use 20A or not, the 30A rectifier would just be used for higher efficiency. I don't think I would waste a 30A rectifier on this thing though. It's powerful enough to power a HTPC. This thing is seriously so silent that it would be great for that application.

[SIDMX]

Re: Xtreme Gear PSAZ-600

The thing is 20A in 12V Rail will not happen that's not the 12V rating in a sub 300W PSU

[Drack]

Re: Xtreme Gear PSAZ-600

Yep, but remember that pushing a 20a part to 20a would be stressing that rectifier, they have looses (close to 30% or something like that I read it on hardware secrets) so more than 14a would be asking too much, maybe it will be OK but I don't like to push things to the limit

[Drack]

Re: Xtreme Gear PSAZ-600

.

[SIDMX]

Re: Xtreme Gear PSAZ-600

... but you won by a lot p4

+1

30A schottky for 12V? ...mmm don't think it needs more than 20A, would bet the protection kicks in before you reach 20A in 12V rail.

[Drack]

Re: Xtreme Gear PSAZ-600

IDK but he must be on a quest to recap every single PSU in the USA ...I know someone who even tried to import them from brazil

He must indeed lol
I have an obsession for repairing anything I can too, but you won by a lot p4
Es raro conseguir a un latino por acá sidmx