Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.
Honestly, unless someone has had this happen before, write to volvo. I sent a certified letter to them so I knew that it got there and they called back the next day with advice. It was with a different problem, but none-the-less they do read what you send and also are prompt about contacting you.
In the letter be sure to say you want a new radio or something along those lines, but obviously state your case first.