Look what I found!

[jr_tech]

So, in SW mode, what voltages do you measure on the plates of the tuning cap? I suspect that the short may have damaged a supply resistor, and the FM is more critical if the voltage is now lower...just a WAG!

jr

[lnx64]

Ooh good idea. I don't have time tonight to check but I'll check tomorrow. That would make sense since I wasn't even on fm when this happened.

[DavGoodlin]

Nice Emud Rundfunkgerat there! I have had three Nordmende with the same tubes you have. The Germans also had a way with getting silky-smooth sound from rather ordinary speakers.

The FM on my Turandot acted similar to yours and replacing the ECC85/6AQ8 fixed it.

Another one was the Elektra, I never did find what killed the FM, so I gave it to a friend whose late Mother always had their Elektra on BC in the kitchen, back when BC had musik.

[Sandy G]

Didn't those Cherman sets use somethin' funky on detecting FM, something called "Slope Detection" ? So they wouldn't have to use Armstrong's patent, & could use a tube or 2 less ? Somewhere in my Feeble Little Mind, I THINK I remember reading/seeing something about this..But I AM Certificated Crazy, & HAVE Had a Stroke, so don't put too much stock into what I say..(grin)

[lnx64]

Well I've been tracing some voltages, and the V1 tube is not getting any voltage from M4. It's a dud. So I might be looking at a bad cap or something else.