IMPOSSIBLE TO REMOVE HUM IN PHONO PREAMP - Page 2 - diyAudio
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Old 6th June 2012, 05:33 PM   #11
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Join Date: Mar 2012
Location: Montevideo, Uruguay
Thank you all. I solicionado the problem Hum. I have realized simply a ground plane on the side of the PCB welding, with a fiberglass board with copper, the same size of the PCB. welding the copper circuit ground of this plate into several symmetrical points.* Of course, supporting the fiber side of the circuit.** Now zero hum and maximum volume (in a Rotel RA-970BX) only hear at least sssssss. Please provide your feedback, Joe.
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Old 6th June 2012, 05:34 PM   #12
diyAudio Member
 
Join Date: Mar 2012
Location: Montevideo, Uruguay
Thank you all. I solicionado the problem Hum. I have realized simply a ground plane on the side of the PCB welding, with a fiberglass board with copper, the same size of the PCB. welding the copper circuit ground of this plate into several symmetrical points.* Of course, supporting the fiber side of the circuit.** Now zero hum and maximum volume (in a Rotel RA-970BX) only hear at least sssssss. Thanks for giving your opinions, Josť
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