Why my UPS starts beeping and turned off?
Contact MaxGreen and ask them.
And why PC don't work even after I directly connect to main board?
Contact Atom and ask them.
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Both, UPS and PSU are terrible quality and them giving you issues is normal, when buying cheap stuff.
If it was me, i'd throw both into garbage and buy:
- CyberPower, APC or TrippLite UPS.
- Seasonic or Super Flower PSU.
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How do i know that your UPS and PSU are terrible?
Well, for one, are there any reviews about them in the net?
Also, the official specs of both of them, are lackluster and due to that, i'd avoid both.
E.g UPS official specs:
https://www.maxgreen.tech/maxgreen-650va-ups
It lists only very little, while also leaving out important information.
- There is no word of the UPS topology. Is it Stand-By, Line-Interactive or Online. Nada. Based on transfer time, it seems Line-Interactive.
- It does say that waveform is Sine Wave, but it doesn't specify if it's Simulated Sine Wave or True/Pure Sine Wave. There's a big diff between the two.
- It also doesn't list runtime on half load and full load. Just vague "up to 30mins runtime".
This is NOT how proper, good quality UPS information is supposed to be presented. But for cheap products, where only goal is to get your money, i guess this little info about the UPS is enough? Btw, MaxGreen site is also lacking info under About Us and Privacy Policy links, if you were to browse around there. I'd say MaxGreen is a scam, while not even bothered to make a proper website for themselves.
For example, here is official specs of the UPS that i'm using, a CyberPower PFC Sinewave CP1300EPFCLCD,
link:
https://www.cyberpower.com/hk/en/product/sku/CP1300EPFCLCD#specification
See any difference between mine and yours?
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Your PSU has about the same amount of official info as your UPS,
PSU specs:
https://www.atomcreativegroup.com/v550-1
Cheaply made website, where you can actually see that the PSU is 504W unit, and not 550W unit. Since +12V rail outputs up to 504W, from where the extra 46W comes from?
Also, again About Us page is also poor:
Atom is found by a group of people who believe they can offer an exciting and fascinating user experience that can be shared by everyone.
That, while stealing your money. I'd say that Atom is also a scam. Cheap website with very little info.
For proper PSU specs and OEM website, look towards Seasonic. E.g PRIME Titanium PSUs, which i also have,
specs:
https://seasonic.com/prime-titanium
See any diff between your PSU specs website and mine?
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Like i said, you have two options:
- Contact the scammers and ask why their products, UPS and PSU are so poor.
- Throw the crap into garbage and buy good quality UPS and PSU.