[ODPILOT]

7/25/14 I have restored a 53-1750 radio phonograph console. All new caps & resistors - the thing WAS working great for a couple of months, but recently has a noticeable decrease in maximum volume. No buzz, no nothing else, just won't go as loud all of sudden. This applies to both the radio and the phonograph volume. Does that sound like anything in particular? Tubes test good. I tried jiggling the phonograph/radio switch, the volume switch - any ideas?? Tubes in this set include:
50Y7GT, 35L6GT, 7c6, 7B7, 7A8. Thanks.