03-07-2015, 10:25 PM
By this afternoon, the chassis looked like this:
[Image: http://www.philcoradio.com/images/phorum...5T_021.jpg]
Most of the restuffed paper capacitors are now back in place. The two IF transformers now have new wires and have been reinstalled.
And now I am even more convinced of this.
Let's look at the audio output transformer.
[Image: http://www.philcoradio.com/images/phorum...5T_022.jpg]
It does not show well in this photo, but the top of the transformer is rubber stamped with the PHILCO name and the part number: 32-8018M. (I am assuming M = Merit Transformer Corp.)
32-8018 is the proper part number for the production 40-715 output transformer, according to the parts list.
But now take a look at what I revealed when I melted the wax from the sides of the transformer:
[Image: http://www.philcoradio.com/images/phorum...5T_023.jpg]
In case you cannot read it, the following was handwritten on the insulating paper on one side:
PHILCO
32M
9543
SAMPLE
8-17-38
8-17-38?!?!?
Well, my feeling is that this transformer may have been left over from the previous year and was then used in this set, which must surely be a prototype or pre-production sample. I'll have to see if I can find a 32-9543 listing in one of my Philco parts catalogs and see if its characteristics match the 32-8018.
Oh, I forgot to mention: This chassis has a four digit serial number stamped into the back, followed by a date of sometime in June, 1939 - which would have been the beginning of the 1940 selling season. As shown earlier, this radio has a conventional Philco Tropic metal model number tag on the back of the chassis. (I'll try to take a photo of that serial number and stamped date tomorrow.)
So maybe I should have left it alone. But this radio, like my 42-720EZ, was obviously used over the years. It's just a shame that the original electrolytics are now gone; I think if it had been completely untouched, I would have just left it as a shelf queen.
Well, in any event, here's how it looks now.
[Image: http://www.philcoradio.com/images/phorum...5T_024.jpg]
I removed the off-on-tone switch to make it easier to install the electrolytics (once I get two of those, that is).
Remaining work to do:
Attach a new power cord.
Replace the dry-rotted speaker cable.
Find and restuff two electrolytic cans, then install them into the radio.
Reinstall the off-on-tone switch.
Install one remaining restuffed paper capacitor.
[Image: http://www.philcoradio.com/images/phorum...5T_021.jpg]
Most of the restuffed paper capacitors are now back in place. The two IF transformers now have new wires and have been reinstalled.
(03-07-2015, 12:48 PM)Mondial Wrote: It really does look like that radio was a prototype or pre-production sample.
And now I am even more convinced of this.
Let's look at the audio output transformer.
[Image: http://www.philcoradio.com/images/phorum...5T_022.jpg]
It does not show well in this photo, but the top of the transformer is rubber stamped with the PHILCO name and the part number: 32-8018M. (I am assuming M = Merit Transformer Corp.)
32-8018 is the proper part number for the production 40-715 output transformer, according to the parts list.
But now take a look at what I revealed when I melted the wax from the sides of the transformer:
[Image: http://www.philcoradio.com/images/phorum...5T_023.jpg]
In case you cannot read it, the following was handwritten on the insulating paper on one side:
PHILCO
32M
9543
SAMPLE
8-17-38
8-17-38?!?!?
Well, my feeling is that this transformer may have been left over from the previous year and was then used in this set, which must surely be a prototype or pre-production sample. I'll have to see if I can find a 32-9543 listing in one of my Philco parts catalogs and see if its characteristics match the 32-8018.
Oh, I forgot to mention: This chassis has a four digit serial number stamped into the back, followed by a date of sometime in June, 1939 - which would have been the beginning of the 1940 selling season. As shown earlier, this radio has a conventional Philco Tropic metal model number tag on the back of the chassis. (I'll try to take a photo of that serial number and stamped date tomorrow.)
So maybe I should have left it alone. But this radio, like my 42-720EZ, was obviously used over the years. It's just a shame that the original electrolytics are now gone; I think if it had been completely untouched, I would have just left it as a shelf queen.
Well, in any event, here's how it looks now.
[Image: http://www.philcoradio.com/images/phorum...5T_024.jpg]
I removed the off-on-tone switch to make it easier to install the electrolytics (once I get two of those, that is).
Remaining work to do:
Attach a new power cord.
Replace the dry-rotted speaker cable.
Find and restuff two electrolytic cans, then install them into the radio.
Reinstall the off-on-tone switch.
Install one remaining restuffed paper capacitor.
--
Ron Ramirez
Ferdinand IN