thanks for very helpful response Soren. Will check it out further

Many thanks Peter -

I am newbie on this site- I have a B&O Link 5500 hi fi with with CD and tape desk. The CD and tape deck work fine. However as of late I am having trouble with radio. It switches itself off for not apparent reason. Also I often - get NO CONTACT on the master panel. I can usually fix it by turning the mains power off and on. The CD and tape deck work