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Old 5th Oct 2017, 7:38 pm   #3
high_vacuum_house
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Join Date: May 2003
Location: Belper Derbyshire
Posts: 1,935
Default Re: Marconi TF 995 B/5 weird waveform need schematic

Is there a modulation on/off switch left on somewhere? Or is the modulation at 50 or 100Hz which could be an electrolytic in the power supply has gone O/C?

Christopher Capener
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Interests in the collection and restoration of Tefifon players and 405 line television
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