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I did open the top of the inductuner, which exposed the shaft. I lubricated the shaft at its ends and lubricated all the gears on the front of tuner. when the knob is turned, the gears and shafts rotate freely. I do not see any obvious mechanical issues with the tuner from the topside.
The tuner has three tubes. 6J6 - RF Amp., 6AK5 - Mixer, and 6AB4 - Osc. All tubes have been tested, swapped with no change. Next steps?
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-Al
Last edited by bigaudioal; 01-04-2016 at 11:53 AM.
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