I found a pic of a printed circuit board, based on Mr. Carlson’s Sony CRF-320 panel light mod, on the Yahoo 320/330 fan page but no board dimensions or component values.
I plan to order a bunch of these so if anyone can sort out some measurements on this board or are interested in obtaining a board, please comment. I am a novice in this and am unsure of the component values. I have wired up an electric guitar, so this I anticipate will be less complicated.
Post readers: If you can help Brian with this info, please feel free to comment!