06-20-2014, 07:45 PM
Hi all, just joined. I've been restoring radios since high school, and I've got about 15 radios, ranging from a Westinghouse Aeriola Sr. to a 1953 Zenith. My favorite is my 1935 Silvertone 1845 console I bought from a used furniture store.
I've got an 89B that I'm working on, but it's being temperamental. Already replaced the line cord and electrolytics, and rewound the primary on one of the RF coils. This will definitely be a head scratcher. The front end is showing almost unity gain when feeding it a signal from my generator. It also doesn't appear that the 36 tube is oscillating, and I've got no signal at the IF amp grid. Clearly, I'll have to go checking more coils and making sure I don't have more open windings.
I found the right schematic for my set, but are there any voltage charts available? Might be helpful, since I found the open RF coil when the plate voltage on the RF amp was next to nothing.
I've got an 89B that I'm working on, but it's being temperamental. Already replaced the line cord and electrolytics, and rewound the primary on one of the RF coils. This will definitely be a head scratcher. The front end is showing almost unity gain when feeding it a signal from my generator. It also doesn't appear that the 36 tube is oscillating, and I've got no signal at the IF amp grid. Clearly, I'll have to go checking more coils and making sure I don't have more open windings.
I found the right schematic for my set, but are there any voltage charts available? Might be helpful, since I found the open RF coil when the plate voltage on the RF amp was next to nothing.
