02-07-2013, 08:23 PM
Jerry, go to the following link:
http://philcoradio.com/phorum/showthread.php?tid=5938
Complete service instructions for the Philco Automatic Tuning mechanism. Study this and see if it helps.
I hesitated to post this, as I would prefer that Chuck get the business...every Service Bulletin that gets posted for free only serves to hurt his schematic copy service. So...my apologies to Chuck.
Yes, the switch - ( 8 ) in the Automatic Tuning Bulletin available in the link above, (97) in your schematic - should be open unless the lever is pushed in to change the radio to a different preset. When the lever is pushed in, the audio muting switch mutes the radio, and switch ( 8 ) - (97) on your schematic - shorts out the Automatic Tuning circuitry. And, yes, the two wires which attach from one side of the mechanism is for the Automatic Tuning shorting switch. The audio muting switch has but one wire connected to it, and I believe it attaches from the bottom of the mechanism.
http://philcoradio.com/phorum/showthread.php?tid=5938
Complete service instructions for the Philco Automatic Tuning mechanism. Study this and see if it helps.
I hesitated to post this, as I would prefer that Chuck get the business...every Service Bulletin that gets posted for free only serves to hurt his schematic copy service. So...my apologies to Chuck.
Yes, the switch - ( 8 ) in the Automatic Tuning Bulletin available in the link above, (97) in your schematic - should be open unless the lever is pushed in to change the radio to a different preset. When the lever is pushed in, the audio muting switch mutes the radio, and switch ( 8 ) - (97) on your schematic - shorts out the Automatic Tuning circuitry. And, yes, the two wires which attach from one side of the mechanism is for the Automatic Tuning shorting switch. The audio muting switch has but one wire connected to it, and I believe it attaches from the bottom of the mechanism.
--
Ron Ramirez
Ferdinand IN
