Corsair CX450 Psu issue

vidhubhushan

Alakh Niranjan
Corsair cx450 is used for this system.
Amd ryzen 5 3400g
Asrock b450 pro 4
256gb Mx500
500gb bx500
2tb wd blue
4tb wd blue
Corsair carbide spic delta

It worked without any problem since January 2020.
A month back apc bx600i stopped working so I changed my livfast 850va inverter to ups mode and connected the computer to power outlet directly.
2 days Back it stopped working. I tried the wire test and noticed that the psu is not working so yesterday I got it checked in the local market as the 5 year warranty is over.
Psu got repaired for 800 and it worked yesterday. Today the situation is the same I.e. it is not working again. It appears the psu is the issue.
I will get it checked tomorrow but I am thinking of getting it replaced and keep it for backup. As far as I can check, this model is not available in the market right now. So I am thinking of cx550 but noticed that there is a cx550m is also there. As far as I can remember, cv and vs psu are inferior to cx series.
Asus TUF Gaming 550B 550 Watt 80 Plus Bronze SMPS too looks ok.
Which one I should go for? There is no plan to add any GPU.
Also I will get the ups repaired tomorrow; most probably it is it's battery issue.
 
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