I have a Yamaha RX-V995 Amplifier that, at any given time, will just shut off. All I have to do is power it back on and sometimes it will work for hours and other times it will shut off right away. It would not hold the last settings and I found the memory cap to be defective, you know, leaky cap syndrome. That was a 4.7F 5.5V cap. at any rate, I went over it with a fine tooth comb looking for loose solder joints and other caps that might be leaky, found and re-soldered a few cracked joints on a regulator board buried in the bottom of this beast, all else looks fine. It does have some power relays for the speaker outputs and B+ power. I remember replacing those on the fisher amps years ago... I was wondering if anyone has worked on one of these and what you might of found. This unit is loaded and looks clean sadly; I do not have a schematic. Nothing leaked into it from the top. It doesn't appear to have smoked any transistors or resistors, at least none of the major 'let the smoke out' components. The power to the proc seems steady and there isn't any noticeable ripple on any of the power buss lines that I have found. I really haven't checked for DC showing up on the outputs as of yet, not really sure how the safety circuits work in this unit. It doesn't run too hot when on for hours at a time. I thought finding and replacing the 4.7F cap would have taken care of it, but still shuts down. To reply to me directly just take caps out of my address.
Thanks in advance,