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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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In Reply to: Yes, the 6V4/EZ80 is the rectifier tube posted by 1973shovel on November 30, 2023 at 12:47:49:
just completed the RCA jack enhancement (new RCA jacks insulated from the chassis and grounded to the center ground connection of the 12AX7 tube socket) and that completely eliminated all remaining hum.
I did not really expect that fix to work, but it sure as heck did.
The tuner is dead quiet now, no hum at all even with my ear right up to the speakers. And no hiss either. I have to say it sounds fab. In stereo, even better than my Scott which is hissy in stereo, although great in mono...
So now I wonder if I should go through with replacing the 40/40/20/20 cap and the other caps provided in the restore kit I purchased on the bay.
I might do more harm than good continuing to screw around with the unit. All it takes is one ruined trace on these old boards and I will be out of business since I do not have the technical knowledge to troubleshoot safely and effectively. Especially not with 400+ DC volts!
Maybe I should pick up another FM3 and try the restore on a second unit.
But that would leave me with 7 tuners, which is hard to justify.
Maybe I can sell 6 of them to Rod M :)
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Follow Ups
- RE: Yes, the 6V4/EZ80 is the rectifier tube - ltman 20:28:36 12/29/23 (0)
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