04-20-2021, 02:29 PM
Do note the "string" that is wound around the two connections made to the driver coils. That is the "tail" of the braiding over the tinsel connecting cord.
Most speakers use this "tail" to tie via a hole or ring next to the connections to take the strain off of the connections should there be an accident that pulls on the cord.
There may be a "tail" on the other end of the tinsel cord. When a phone plug is used to connect there will be a hole in one of the connection devices to tie this tail...
In the radio there might be a hole or not to tie the cord.
Re-connecting tinsel cord to the metal phone tips is a bit tricky. I'll post how to do that if need be. Some tinsel cords it is possible to establish a new tail of braid so long as the braid is still in good condition. Simply start a hole in the braid and work the individual cords through the hole leaving the tail of braid.
Why not post an image of the set removed from the cabinet of the three tube area where the audio transformers go. Since FWIR one of the transformers are missing and one is bad. According to the new drawing the transformers are the same. If a dust footprint seems to indicate that. Post the dimensions of the existing round transformer and the spacing of the now empty mount holes for the missing transformer.
I suggest not cobbling an audio transformer, though "stuffing" an old round case with a correct transformer will suffice. Incorrect resistances or the wrong ratio will create distortion...
Want ads should not appear in a discussion form...
Post a WTB here for the transformer: https://philcoradio.com/phorum/forumdisplay.php?fid=17
The grid leak resistor probably has increased value to infinity. A replacement can be wired in below deck or the original can be carefully dissembled, the glass removed and replaced with a larger glass tube and a 1/10w 2.2 meg. resistor hidden inside... If the grid leak resistor is higher than 8-10meg the detector stage will be cut off and not work...
Chas
Most speakers use this "tail" to tie via a hole or ring next to the connections to take the strain off of the connections should there be an accident that pulls on the cord.
There may be a "tail" on the other end of the tinsel cord. When a phone plug is used to connect there will be a hole in one of the connection devices to tie this tail...
In the radio there might be a hole or not to tie the cord.
Re-connecting tinsel cord to the metal phone tips is a bit tricky. I'll post how to do that if need be. Some tinsel cords it is possible to establish a new tail of braid so long as the braid is still in good condition. Simply start a hole in the braid and work the individual cords through the hole leaving the tail of braid.
Why not post an image of the set removed from the cabinet of the three tube area where the audio transformers go. Since FWIR one of the transformers are missing and one is bad. According to the new drawing the transformers are the same. If a dust footprint seems to indicate that. Post the dimensions of the existing round transformer and the spacing of the now empty mount holes for the missing transformer.
I suggest not cobbling an audio transformer, though "stuffing" an old round case with a correct transformer will suffice. Incorrect resistances or the wrong ratio will create distortion...
Want ads should not appear in a discussion form...
Post a WTB here for the transformer: https://philcoradio.com/phorum/forumdisplay.php?fid=17
The grid leak resistor probably has increased value to infinity. A replacement can be wired in below deck or the original can be carefully dissembled, the glass removed and replaced with a larger glass tube and a 1/10w 2.2 meg. resistor hidden inside... If the grid leak resistor is higher than 8-10meg the detector stage will be cut off and not work...
Chas
Pliny the younger
“nihil novum nihil varium nihil quod non semel spectasse sufficiat”
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