Question PSU advice Needed -- PC won't start with a new PSU..

May 26, 2023
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Hii..
I'm looking for answer why my pc won't start with a new PSU.
I have an old PC from 2012 or 2013 that have been broken since 2018 (Mobo & GPU dead), and i want to re-use the PC again for working purpose.

I already revive that old PC using below Hardware for about 6 month and its working fine:
Processor: i5-2500K LGA1155
MOBO chipset: Intel B75
MOBO: B75-G578U (I guess its a local mobo brand, https://kyo.co.id/produk/motherboard/b75-2/) and i choose because mobo have SSD slot
Memory: Samsung 8GB + Kingston 4GB
GPU: Radeon R7-240
PSU: Standard 380Watt
Cooling: Standard Cooling
SSD: 1pcs - 512GB --> Main Boot and OS
HDD: 3pcs - 1T, 1T, 340GB --> Data Only

Now, I want to upgrade the GPU dan PSU.
I change The GPU to Radeon RX-580 dan the PSU to Antec ATOM V550
Using new PSU (V550), the PC won't start. even if I plug only the Motherboard and unplug everything else.

I suspect the problem is the DC output difference between old PSU and new PSU.
OLD PSU:
+3,3V(16A) , +5V(30A) , +12V(14A) , -5V(0,5A) , -12V(0,5A) , +5VSB(2,5A)

NEW PSU
+3,3V(18A) , +5V(18A) , +12V(45,8A) , -5V( ) , -12V(0,3A) , +5VSB(2,5A)

is it possible that lower +5V amperage make my PSU not working ??
btw, I already did the paperclip test and its working fine.
Where did I do wrong ??
Please help me to solve this..
Thank You..
 
Hii..
I'm looking for answer why my pc won't start with a new PSU.
I have an old PC from 2012 or 2013 that have been broken since 2018 (Mobo & GPU dead), and i want to re-use the PC again for working purpose.

I already revive that old PC using below Hardware for about 6 month and its working fine:
Processor: i5-2500K LGA1155
MOBO chipset: Intel B75
MOBO: B75-G578U (I guess its a local mobo brand, https://kyo.co.id/produk/motherboard/b75-2/) and i choose because mobo have SSD slot
Memory: Samsung 8GB + Kingston 4GB
GPU: Radeon R7-240
PSU: Standard 380Watt
Cooling: Standard Cooling
SSD: 1pcs - 512GB --> Main Boot and OS
HDD: 3pcs - 1T, 1T, 340GB --> Data Only

Now, I want to upgrade the GPU dan PSU.
I change The GPU to Radeon RX-580 dan the PSU to Antec ATOM V550
Using new PSU (V550), the PC won't start. even if I plug only the Motherboard and unplug everything else.

I suspect the problem is the DC output difference between old PSU and new PSU.
OLD PSU:
+3,3V(16A) , +5V(30A) , +12V(14A) , -5V(0,5A) , -12V(0,5A) , +5VSB(2,5A)

NEW PSU
+3,3V(18A) , +5V(18A) , +12V(45,8A) , -5V( ) , -12V(0,3A) , +5VSB(2,5A)

is it possible that lower +5V amperage make my PSU not working ??
btw, I already did the paperclip test and its working fine.
Where did I do wrong ??
Please help me to solve this..
Thank You..
Antec psu's are horrible never trust them