Thread: 21-CT-55 power supply failure
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  #30  
Old 09-15-2011, 06:53 PM
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Penthode Penthode is offline
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One other thing: when you inject the baseband composit signal to the video amplifier, do you deactivate the RF/IF section? Or does the hum only appear when the signal is applied to the antenna?

Also, is it 60Hz hum or 120Hz hum?
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