[bdi1976]

A forum expert and I tried aligning the 84 last night. The I.F. signal aligned properly to 460KC but we picked up no stations after completion. I was picking up 7 faint channels just before we began with quite a bit of background noise (not buzzing, but sounds like it's raining on the speaker). After attempting to align, the volume was much louder, but we realized that the first trimmer (17) adjustment seemed to do nothing. I switched the 77s and got one faint channel back. At this point, I am doubting the integrity of one of the 77s so I ordered another today. If I assume that the trimmer does work, would this indicate that part of the IF circuit is open and therefore it's unresponsive?....or could it just be a bad 77? Could this be possible when we were able to tune to 460KC properly? The second trimmer (15) did seem to impact the alignment, which I assume means that portion of the circuit is closed. Any thoughts guys? Thanks