m4 ATX usb sound card ALOT OF NOISE
so here's how it is: i have an install wich uses the m4-atx power supply, and for sound i got an external usb car (creative x-fi). untill recently it worked prety good.
BUT, now i face th following problem:
the one chanel of the inverter (only the one). causes ALLOT OF noise. continiously, with lesser periods of sound (like a bass or something). whenever i play sound from pc or not.
- the inverter works fine with other input (mobile)
-the sound card works fine on other pc
- the sound starts, as soon as the metal of the usb cable, of the sound card, touches the mb (no need to connect)
-i dont know what causes the noise to raise, but when it was big enough, the sound card was getting disconected-and reconected all the time...
what i did for this to start is this :
i bought a new video card (noise continius even without it connected)
i placed enother LCD (noise continious without)
and i moved the whole pc install. i have 2 batteries. before it was taking voltage from the one, and now from the other. i have tried many diferent grounds but no luck..
needles to mention, that the LCD'S also have allot of noise in the image!!
any help ? :D