Recently, I've developed a significant change in sound in my left channel after playing a couple albums. The sound gets louder, brighter with a drop in bass output and with more glare. If I turn the seduction off for a while, then turn it on again, the same pattern repeats. I suspect I've got a bad solder joint, but I was hoping someone might be able to give me some direction about where to start locating it.
Thanks as always
