Hello. I've followed custom pc/bit tech for years but this my first post. Last month I've started getting morse code through all audio outputs from the motherboard sound card, now I do enjoy reasonable loud music of types but feel that this shouldn't have killed anything. Interally, I did overclock my rig slightly but again nothing major. The spec is as follows: amd x4 945 95watt asus m3a76-cm 4gb of cruical uk flag edition memory 1 sata drive 300gb 1 sata dvd rw 430watt cooler master?? I believe ati 4830 xfx Win os 7 64bit with latest drivers. It's insane this constant beep, screech. Hard disk operation, processor anything that's active I can hear through my headphones even when the sound is muted, all line in are muted even from start up when loading windows I hear it. Any help would be great, could it be the psu on way out or have I killed a electric component on the in built sound card. I have built for years and regular do upgrades just a psu and motherboard wasn't top of my list.
When you say "Morse code", I assume you mean digital "noise" from your outputs, and not proper morse code? If it's just digital noise that has suddenly started, it may be a broken component in a low pass filter in the sound device's pre amp. If it's an old motherboard, not much you can do, except disable it and fit a separate soundcard. If a new board, or still under warranty then just RMA it. The mobo should be earthed to the case via the PSU cabling, and therefore grounded via the mains so there is a chance the PSU may be causing it, but it's a slim chance. If you have access to another PSU to test this it may be worth a shot. It may be easier, and cheaper (and probably better in terms of sound quality) to fit a decent sound card... something like this would be a good replacement... or the equivalent PCI-E version if you have no spare, or even no PCI slots.
Sounds like you have a "ground loop" problem. Dj's often have this problem, a ground loop isolator will solve it, but the fact that the problem has suddenly appeared and was not there beforehand does suggest something has broken/changed recently. A cheap ground loop isolator will cost you less than £5 on amazon so its worth trying! I had an amp plugged into my computer that made the noises you are describing, and an isolator worked for me.
I take it when you disable the internal sound card it stops ? Have you got a mate with an external sound card you can try just to see what happens ? Did you use the VIA Audio Driver from ASUS or the latest from VIA ?
resolved kinda it was the antec internal wiring for the front jacks that was connected to the motherboard that was really close the psu, problem being that there 2 connectors and with one plugged the other must have acted like a reciever for electrical interference because the psu make that same noise when up close to it and of course every pc part draws power thats why you could hear even when the dvd rw spun up. so ive unplugged from the front jacks and used the back ones instead and removed the internal cable.
