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Old 6th Jan 2017, 4:24 pm   #311
boxdoctor
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Join Date: Sep 2010
Location: Ripley, Derbyshire, UK.
Posts: 785
Default Re: My first valve radio project - Philips 462A

Quote:
Originally Posted by indigo.girl View Post
The audio input from bluetooth to the set has been wired in with a 47K resistor in series before going into the gram pick up socket. Any ideas on what to try to stop the buzzing?
Hi, I would suggest that you check to see that the 47K resistor is wired into the "live" or "grid" connection to your pick-up socket. I.E. the socket which hums if you touch it with a screwdriver when on gram. the other socket should be ground for audio, and should have a direct connection to the blue tooth unit. Tony
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