I use an Apple Universal Dock to connect my iPod Touch to my stereo equipment. It's been working just fine for the last year or so.
The other day I plugged in the iPod into the Dock, and the Volume Bar disappeared and there was no sound out of the iPod! I connected the iPod directly to the stereo equipment and the Volume Bar was there and worked fine. It's only when I connect the iPod to the Dock that the Volume Bar disappears! What could be the problem? Thanks!
Wow, rhethoric questions... How often do you think can you plug your iPod to the dock? A 1000 times? Or even more? No! Any connector has a lifetime until it breaks by plugging, let alone the mechanical impact. It looks like yours is broken now. Either the dock connector or the iPod counterpart.