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I started the afternoon by carefully oiling the shafts of the inductuner with turbine oil. I gently rocked the tuning knob shafts and they let go suddenly. Now, the tuner is turning smoothly.
I replaced the majority of electrolytics in the power supply. Installed the 5U4G, and pulled the horizontal output tube. Brought the set up slowly over 2 hours this evening. At around 80 volts, I was hearing noise from the speaker!
At 90 volts, I could hear the signal I was feeding into the phono plug through the speaker! I continued to bring it on up. Started seeing gas glowing in some of the small tubes. The tuning eye is green. Nothing wrong with the power supply. The new transformer is not getting hot.
Finally, at 110 volts, I tried feeding a signal from a VCR to the antenna input. It took a few minutes of adjusting the tuner around ch3 before I suddenly heard the video tape I was playing! Adjusting the fine tuning brought the sound in loud and clear.
I dont have the HV caps, yet. I was feeling brave, and installed the horizontal output, and turned it back on, slowly. Heard a couple of arc pops while taking a fast reading at the anode of the CRT. 3KV. Turned it back off, and pulled the hz. output again, and turned it back on. It has been sitting here playing audio for about 2 hours now, total. I think I will have video, because when the video is playing on the VCR, I can see the brightness of the slight gas in the video output tube change as the picture changes on the movie.
I've been running the chassis for the last week or so without the 5U4G installed just to help the set dry out a bit. With the tube installed, the whole chassis warmed up and I was treated to some dampness smells that I havent noticed before.
I need to rig up a stand for the chassis so I can pull it out enough take readings with everything connected.
I'm not going further until I get the HV caps replaced. During the very short time that the hz. output was installed, I could see the filaments in both of the 1X2's glowing, and touching a screwdriver blade to the caps of them produced a tiny arc.
In the meantime, the electrolytics that remain are not overheating. I will replace them, but I've got other things to look at until I get the HV parts.
I sure didnt expect to hear sound thru the antenna input this fast!
Bruce
Last edited by holmesuser01; 10-23-2010 at 07:41 PM.
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