Reply To: Beomaster 4400 – Sudden drop in sound? November 1, 2022 at 2:34 pm #10530 GlitchBRONZE Member Topics Started 15Total Posts 302 Here is the signal mute circuit. The signal coming in to R244 comes from the FM circuit. If I am interpreting this right, removing TR208 should disable the mute signal as a test. Glitch