Hi to All,
Many Thanks ! to Zeno & Damen for your replies, i've passed on the info to my friend.
in case anyone is interested, Mannix54 on our french TV forum uploaded the full service data for the European version of the TR-425. it works on the 625 line CCIR B/G standard with 5.5 MHz FM audio.
37 pages in German :
https://we.tl/t-sv0aRjlek4
We're still interested in the service manual for the US version. My friend wants to add an A/V input for better image quality vs RF modulator input.
Best Regards
jhalphen
Paris/France