08-05-2011, 01:44 AM
Nuts! The 32-7472 audio output transformer is open on one side of the center tapped primary 
I find it curious that the schematic specifies that it's mounted on the speaker frame but mine is mounted on the chassis. It's also depicted mounted on the chassis in Philco service bulletin No. 226.
I also noticed that it was soldered in crudely. Perhaps it was already replaced or someone tried to repair it ?
I suppose I could try melting out the tar and look for the break
[Image: http://farm7.static.flickr.com/6002/6010...71803e.jpg]
[Image: http://farm7.static.flickr.com/6018/6010...937422.jpg]
Luckily, the speaker I picked up just happens to have a good 32M-9248 output transformer mounted on it's frame. So I'll try using that, but it would be nice to find a good 32-7472 someday.
Who knows maybe I'll find one at the ARCI swapfest later today ?
I find it curious that the schematic specifies that it's mounted on the speaker frame but mine is mounted on the chassis. It's also depicted mounted on the chassis in Philco service bulletin No. 226.
I also noticed that it was soldered in crudely. Perhaps it was already replaced or someone tried to repair it ?
I suppose I could try melting out the tar and look for the break
[Image: http://farm7.static.flickr.com/6002/6010...71803e.jpg]
[Image: http://farm7.static.flickr.com/6018/6010...937422.jpg]
Luckily, the speaker I picked up just happens to have a good 32M-9248 output transformer mounted on it's frame. So I'll try using that, but it would be nice to find a good 32-7472 someday.
Who knows maybe I'll find one at the ARCI swapfest later today ?
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
