[Ron Ramirez]

Good afternoon, anybody, and Happy 4th...

I worked on the 604 some more today.

But first...Let me show you how I made a 602/37-602 audio output transformer fit underneath a 604 chassis.

You take the 37-602 audio output transformer...

[Image: http://www.philcoradio.com/images/phorum..._00027.jpg]

shine it up real nice... no, no, wait, getting carried away with a former wrestler and now action-adventure movie star's catch phrases. Anyway...

You have to remove the core from the shell. It's not too hard, really.

[Image: http://www.philcoradio.com/images/phorum..._00028.jpg]

[Image: http://www.philcoradio.com/images/phorum..._00029.jpg]

[Image: http://www.philcoradio.com/images/phorum..._00030.jpg]

Keep pulling the steel frame from the core until you are left with only the bare core:

[Image: http://www.philcoradio.com/images/phorum..._00031.jpg]

Now you will need to install the core into the frame of the original transformer. Notice how both are nearly identical in appearance? They also have identical electrical characteristics.

[Image: http://www.philcoradio.com/images/phorum..._00032.jpg]

Remove the core from the frame of the original 604 transformer...and install the core of the 37-602 transformer into the 604 transformer's frame.

[Image: http://www.philcoradio.com/images/phorum..._00033.jpg]

[Image: http://www.philcoradio.com/images/phorum..._00034.jpg]

Lengthen the leads as needed, and install in the 604.

[Image: http://www.philcoradio.com/images/phorum..._00035.jpg]