Can you take a picture of this glue on the transistors, and a close up showing the hot parts / signs of burns?
Is the bias fluctuation on just one channel or same behavior on both channels?
You can clean off any glue with some acetone and a cotton bud / q-tip (apply it only to glue, need to hold it there for a little while to soften it).
Is the bias fluctuation on just one channel or same behavior on both channels?
You can clean off any glue with some acetone and a cotton bud / q-tip (apply it only to glue, need to hold it there for a little while to soften it).