One other thing that you can try is to turn all components off. And use the following power up sequence.

1. Meridian external sources
2. Meridian Processor ie 861
3. Meridian Speakers.

Seem to recall on occasions that the above sequence would sometimes work.

M2.0>ROON: C15/DSP6K
C2.2>ROON: ALLO DIGIONE/DSP5K+D2500x2
W2.2>ROON: C10/DSP33+D2500
R2.0>ROON R: MiniDSP SHD>SCHIIT Freya+(Forkbeard)>3eAudio A7 Mono>>>Apogee Scintilla

Projects. ROON streamer with serial RS232 volume control