Not Turning On After 2 Months Unplugged, No Light, No sound, Small PSU

Hi everyone, I posted before about this but here’s an updated situation:

• Left my PS4 Pro unplugged for about 2 months while I went back to my hometown
• When I plugged it back in, the console does absolutely nothing (no blue light, no beep)
• Normally it shows the blue light after a second, but now there’s no light at all
• If I put my ear near the PSU area, I can hear a very small click or faint electrical noise
• When plugging in the power cable, I can hear a small sound from the plug/PSU
• I already completely disassembled it and cleaned both the PSU and motherboard, only handheld turbo fan (low to medium dust blowing mode, not high pressure)
• No visible damage, no burnt marks, no bugs, nothing looks wrong
• I tried drying it with a fan before because the weather here is quite humid, just for sure
• The console still does nothing when pressing the power button,enject or use controller to turn on(no connection)
  
  -The console was working fine the last time I used it. I left it unplugged before going back to my hometown. Previously, the PSU had a coil whine issue but it still worked normally. The disc drive also made a loud noise on the first read, but it remained functional. I didn’t bring a multimeter with me when I returned because I didn’t expect this problem to happen. I also haven’t tried another PSU yet, but I plan to test one in the next few days. For now, I just want to understand what might have happened.