rocknroller
Active Member
Have this receiver with an odd FM problem. It exhibits 2 issues:
1) It won't auto-tune any station in (with good antenna/coverage) but manually tunes in stations fine
2) The entire gain of the FM audio is *substantially* lower than every other input on the receiver, including AM. Subjectively - half the gain.
Block diagram below. The schematic is not great quality and I can't even fit the entire FM path on one page. 1st portion shown here as well but thought maybe I'd expand the relevant section (if identified from the block diagram) and repost it with better readability/detail.
This receiver doesn't have a lot of value but if there is something quick/simple to check or focus in on I'd love to hear any expert recommendations!
1) It won't auto-tune any station in (with good antenna/coverage) but manually tunes in stations fine
2) The entire gain of the FM audio is *substantially* lower than every other input on the receiver, including AM. Subjectively - half the gain.
Block diagram below. The schematic is not great quality and I can't even fit the entire FM path on one page. 1st portion shown here as well but thought maybe I'd expand the relevant section (if identified from the block diagram) and repost it with better readability/detail.
This receiver doesn't have a lot of value but if there is something quick/simple to check or focus in on I'd love to hear any expert recommendations!