05-03-2021, 10:32 AM
Bob, I would take one of the following approaches:
1. (No expense barred) Take the switch apart and see if it is repairable, and if not see if Mark Oppat can repair or replace it. Then return the circuit to how it is supposed to be.
2. (Economy approach) If the switch is not repairable I'd still return the circuit to how it is supposed to be and then connect C27 to one of the two points where the radio sounds best to your ears. You can even experiment with different values for C27 and even R12 to get the tone tone you think sounds best. A two position tone control isn't exactly a Hi-Fi option anyway, although it's nice to have the Music/Voice selection.
1. (No expense barred) Take the switch apart and see if it is repairable, and if not see if Mark Oppat can repair or replace it. Then return the circuit to how it is supposed to be.
2. (Economy approach) If the switch is not repairable I'd still return the circuit to how it is supposed to be and then connect C27 to one of the two points where the radio sounds best to your ears. You can even experiment with different values for C27 and even R12 to get the tone tone you think sounds best. A two position tone control isn't exactly a Hi-Fi option anyway, although it's nice to have the Music/Voice selection.
John KK4ZLF
Lexington, KY
"illegitimis non carborundum"
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