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Hi all, after a long hiatus on projects after welcoming my first child into the world, I've finally had a little time to once again do battle with my Admiral 30A1 TV. It uses the A-1582 Tuner assembly. This TV has been fun, and the picture issues were all sorted and for a short time it was working OK. It had a good picture, but the sound was a bit on the weak side- you could barely lock it in with the fine tuning control. This gradually worsened to the point where you couldn't pick up any sound at all- just some buzzing. I checked the audio IF section and the tubes in that portion, but nothing helped.
I took a look at the tuner (since it still has all of the original parts) with the original intention of rebuilding it. However, after seeing that there was no way to remove the rotary switch assembly from the chassis in order to get at 90% of the guts tucked away in there, I just redid the few caps and resistor under the FM Trap coil, where the audio and video signal is delivered to the Audio and Video IF's. These had all drifted beyond their rated values. Here is where things went downhill. I put the tuner back in and tested the TV. No sound, no video. After re-checking things, I discovered that I had misconnected the filament voltage feed. Hoping that was the issue, I reconnected it on the correct terminal and tried the set again. I still don't get a picture, and I now get a local FM radio station out of the speaker- RATS! So, I have been looking for a resistance chart for this particular tuner to see if I can find where I messed something up. My Riders and Sams manuals only cover the most common tuner for that model (94C9-2). I'm hoping it's a matter of knocking the tuner out of alignment with the new components, but knowing my luck I probably screwed something up. Sorry for the long post. Anybody have some insight as to what to look for (aside from "If it ain't broke don't mess with it!" )? Thanks!
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