Solved
Shrill sound when using microphone function and deleting recordings .
The shrill sound is emitted,usually, in the evening after a few hours use. I normally, watch breakfast tv until about 9..00 am , about 90 mins use, and then switched off until 12 noon. After continuo...
See ozsat's advice on a similar thread https://community.virginmedia.com/t5/Virgin-TV-360/360-remote-paired-with-Panasonic-audio-keeps-sending-a-spike-to/m-p/5331260#M47406
