my father fixed the PSU. the fault was in power module.
He changed out a few electrolytic capacitors that didn't fix the problem. after that there was one fishy resistor that he changed out and the PSU is fixed.
its NTC resistor 2,5ohm, 6.5v.
I hope this helps someone down the line. If you need details let me know. I'll be glad to help.
cheers.
Motherboard
Asus x370 Prime Pro
GPU
MSI Radeon RX Vega 56 Air Boost 8G OC (samsung mem)
RAM
GSkill Aegis 16GB (2x8) DDR4 3000MHz
Hard Drive
Intel 545s 128GB
Hard Drive
Intel 545s 128GB
Hard Drive
Crucial MX500 500GB
Power Supply
Seasonic FOCUS Plus 650W Gold
Case
Corsair Carbide 300R
Operating System
Win7 pro 64bit
Monitor
46" Samsung 46es6710
Motherboard
ASRock Z68 Extreme4 Gen3 (bios 1.20)
RAM
2x8gb DDR3 HyperX Savage, 1866mhz, 10-10-11-27, 1,5V
Hard Drive
Samsung 64gb (OS);256gb ser830;256gb serPM830
Optical Drive
LG GH22NS30 DVD-RAM
Power Supply
750W XFX Black Edition
Case
CoolerMaster Centurion 534 (moded)
Operating System
Win7 Ultimate 64bit
Monitor
46" Samsung 46es6710
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