I would agree and would call Sony if this unit is under warranty. If it is not then I might get a service person to look at it if it wouldn't cost very much for the estimate but in most cases especially with newer receivers with the chip sets and control IC's the chances of the unit being an "easy fix" or cheep to fix is slim and if the repair is going to cost a bit of money then it comes into play what a used unit would cost to replace it with equal power and quality with the same features. I would guess you could find a used unit with the same features and sound quality for the same price on audiogon or ebay for the charge for a major repair on this unit. back in the 70's and 80's when these units were simpler they could be repaired with a lot less time and effort because they were simpler but now that they are practically sound amplifying computers they are a lot harder to diagnose and repair and they do not have a good resale value used compared to the new price that people in the market for used audio can find good deals.