Sony DE697 Stereo Receiver

[whogoesthre]

I have a Sony DE697 Stereo Receiver that had a gradually diminishing audio output. I've checked the B+ and B- rails and find 33.5 and -43 V instead of the symmetrical 56V? Additionally I've got a dim display but the drive to the display looks ok. My first thought was the big electrolytics in the power supply but they look fine, no bulging tops. The bridge rectifier looks fine as well. I'd much appreciate any thoughts or ideas ! Thanks in advance

[jts1957]