Thanks Carl! Sounds like we do have a lot in common. Welcome to the fray. I try to leave little to chance in electronic service. I delight in accurately troubleshooting from the symptoms alone, often over the phone! The only way to do that is understanding circuit function thoroughly. Not always the easiest with today's service literature. Get some stuff on your channel!

There should NOT have been a ground fault. Normal engineering practice would dictate that a ground wire and continuous trace on board would have provided a circuit path to ground even if mechanical means failed, as it did in this case. Using mounting screws for ground return in a sub-assembly like this, for some, but not all circuits, was extremely lazy. Good exercise in diagnosing schematic vs. physical differences though. I miss printed service manuals, no easy place to note this mechanical difference.

I am still doing videos when I have time in shop. But COVID, and an unusually busy year, has prevented my project time severely. My current 940 project will be to add a real AM modulator (not Balanced Modulator) in the driver stages of my 940. So look for that. If you found errors in your manual you should watch part 2 of my FT1000 series. Thanks for watching and stay well.

Unfortunately, I no longer take in radios for repair from the public.

OK my friend thank

Someone "Liked" this reply? Really? Hmm. I thought I should perhaps explain my answer in more detail. Obviously I do occasionally take in a radio for repair. I have a small circle of friends for whom I will do repairs, generally free of charge. Sometimes they have to wait a long time to get their gear back. I'm talking months, even years. Paying customers just can't wait that long. Also, if I made repair a commercial venture I really couldn't charge what I feel my time is worth. So, sorry, I no longer repair radios for side work. Too many activities, too few hours in the day.