Technics A900mk2 right channel cutting out
I have just purchased a second hand Technics A900mk2 which I am very happy with. It was working perfectly for a week until recently the right channel would be very quiet/distorted until the amp warms up and gradually works fine. Sometimes it would suddenly come back when I turn the volume knob.
I have been connecting it directly to my laptop's audio jack.
Any ideas why it does that?
Many thanks for any suggestions!