12-24-2012, 05:23 PM
I appear to have a bad detector tube. All IF, audio, and even the phono amp work fine. I tried to inject modulated RF into the XXL/7A4 tube and get zip. I pull it out and you can hear stuff rattling inside it.
I talked to Jim at Vacuum Tubes, Inc. (great guy, BTW... very nice and very helpful) and had him ship one to my In-Laws house so I can finish this up while I am there this week. I need to do the alignment with the chassis in the cabinet, anyway.
Ron, thanks again for the guidance on the replacement audio output transformer. That Hammond 125C only required very minor mounting hole adjustment and fit right in place. The speaker will hurt your ears even face down on the bench.
Another bit of good news is that the power transformer barely gets warm.
Anyway, I put the dial back on and restrung the bandswitch light and dial indicator.
Here it is:
[Image: http://sphotos-a.xx.fbcdn.net/hphotos-sn...6556_n.jpg]
I may need to find a repop dial plate. The paint is flaking off of this one.
I talked to Jim at Vacuum Tubes, Inc. (great guy, BTW... very nice and very helpful) and had him ship one to my In-Laws house so I can finish this up while I am there this week. I need to do the alignment with the chassis in the cabinet, anyway.
Ron, thanks again for the guidance on the replacement audio output transformer. That Hammond 125C only required very minor mounting hole adjustment and fit right in place. The speaker will hurt your ears even face down on the bench.
Another bit of good news is that the power transformer barely gets warm.
Anyway, I put the dial back on and restrung the bandswitch light and dial indicator.
Here it is:
[Image: http://sphotos-a.xx.fbcdn.net/hphotos-sn...6556_n.jpg]
I may need to find a repop dial plate. The paint is flaking off of this one.
