Re: "Fuzzy" FM
I chose to pull forward this older thread because I have a fault that seems to be very similar.
FM sounds as if the set was tuned just off center.
The set has ECC85 / ECH81 / EF89 / EBF89 / (2x OA79) / ECL82
New electrolytic cap in the discriminator and I tried adjusting the pri/sec discriminator coils but
the distortion remains.
It's not a lot, just enough to be annoying.
Tape input is perfectly clean on the scope, so the output stage is fine.
On AM it whistles more than usual, I get more whistles than stations (if any).
Any ideas ?
Martin
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