NAD2240PE

Hi I’m new here and have been working on a NAD2240PE. Got an issue that maybe someone on this site has experienced before. Right channel is distorted and can’t get the bias set and yes I did desolder the short. It’s plugged into a DBT and the light does not glow. Also when I turn power off sound will still come out of the left channel and distorted out of right channel. Thanks for your help.