[GarySP]

Hello StoneyD. Using the search feature at the top of the page, type in Philco 20 in the Search by Keyword column. Scroll to the box labeled Search. Numerous threads came up. They may be mixed a little with other topics, but there to be found. Also, at the bottom of the Home page is a column labeled Philco Radio Library. You can find your schematic there.
Continue to post questions about the venerable 20 in this thread. Add pictures when you can. Lots of help is here to assist you along the way. Take care, - Gary