Channels going out

So I have a Sony audio receiver that I use to power my 5.1 speaker system for my computer. The exact model is STR-DE945.

So here is my story, I have issues where I have my left front channel goes out on a cold power on and what I mean by that is letting the receiver sit for about 6-8 hours then I would turn it on. The channel would kick back on when I have to turn the volume up to about 1/2 to 3/4 with some sound playing.

Could there be some sort of fix for this or am I SOL?

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