psu LED blinks WHITHOUT ground connected??
hello. i have the strangest issue with my M4-ATX. (althyough it might not be so strange..) when i connect the possitive wire to the M4, before i connect the ground, the LED starts blinking. if i disconnect all the cables going from the PSU to the motherboard, it stops.
in my build i have 2 screens. BOTH are powered from the 12, and 5v rails of the M4-atx.. if i have all the power lines connected BUT the vga cables from the graphics card disconected, nothing happens.
if i plug thei power of the screens, nothing happens as well. it's when i connect their VGA that the led starts blinking (Although i cant seem to find any ground. only a ground plane on the screens panel maybe? but the motherboard as well is grounded to metal plate)
also, i have a usb sound card. if its connected nothing happens. if i connect its outpouts, to the amplifier, the led turns on and stays on (dimmed). but this does not happen if the outputs have the ground loop isolator connected (normal)
dafaq is up with that? is it normal? my build has LOTS of noise. noise on the screen, noise on the amp... anyone got any idea?