07-21-2011, 11:14 AM
Hi
Last question first: R103 is 10 watts, according to Philco's 1949 parts catalog. If this part is bad I would replace it with a 25 watt resistor. (Of course, if this part were bad you would lose B+ to most of the set, rendering it inoperative.)
Is the set producing any sound with the 6J5 in the socket? Is the 6J5 good? Check R209, C207, C208. Also R210 and R211.
Audio would have to pass through C206, R208, R210 and C208 to reach one of the 6K6GT output tubes with the 6J5 removed, and this audio would be at a low level due to taking those detours through resistors R208 and R210, a path the signal would not normally take since it is supposed to be phase shifted by the 6J5 tube and applied to both 6K6GT grids.
Check R212 and R213, also.
Last question first: R103 is 10 watts, according to Philco's 1949 parts catalog. If this part is bad I would replace it with a 25 watt resistor. (Of course, if this part were bad you would lose B+ to most of the set, rendering it inoperative.)
Is the set producing any sound with the 6J5 in the socket? Is the 6J5 good? Check R209, C207, C208. Also R210 and R211.
Audio would have to pass through C206, R208, R210 and C208 to reach one of the 6K6GT output tubes with the 6J5 removed, and this audio would be at a low level due to taking those detours through resistors R208 and R210, a path the signal would not normally take since it is supposed to be phase shifted by the 6J5 tube and applied to both 6K6GT grids.
Check R212 and R213, also.
--
Ron Ramirez
Ferdinand IN
