I've had this Yamaha RX-A2020 for a few years now - purchased new from BB. I have not used it myself much for the past 2 years since my teenage son has taken over the basement as his appt. He has used it every day and night for quite a while now. Lately when powering it on it takes a long time for the audio to kick in. Does not seem to matter which audio\/video source is selected and the time seems somewhat random from a few minutes sometimes to several hours other times. Any ideas? Is it worth getting repaired or trying to tackle myself? I am fairly versed with electronics and repair but am unsure where to even start with a diagnosis.