i have had many problems with my second gen stereo. it is stock, s5. i frequently have an issue come and go of it cutting out randomly, whether it be cd, radio or whatever. not when i brake, or hit a bump or anything, it is totally random, i can even be at a stand still. i notice it a lot more when the weather is hot.
besides that, while driving home yesterday, i drove pretty hard in 1st and 2nd gear and the sound completely cut out, and is now not coming back at all. any ideas? hoping someone else has had something similar

 

have you checked the wires maybe its a bad ground connection

 

check the fuse under the driver's side dash..in the footwell.If it is corroded it can do that.

 

fuse looked fine, changed it anyway and still same thing. ill have to check out the wires. it actually came back on today out of nowhere..weird, not to savvy with electrical stuff but i found some good posts on ground wires and such. thanks

 

probably typical cold solder joints