I'd be grateful for any advice on what steps I should take to decide where the fault lies with my Cyrus cd player and amp and Mission speakers. The system worked yesterday but I get no sound today. I've checked the obvious ... connections between cd player and amp and leads to speakers. The speakers 'crackle' occassionally when I wiggle the connections. What should I do? Or do I accept that it is an old system (a great system) and it is time to bid it farewell? Many thanks.