I had the same with my Corsa. Turn radio off then back on, go onto FM radio, then press the off/on button and the right hand skip button together for roughly 20 seconds and it comes to life. Hope it works for you 👍
Very sad news. Was my shift manager for a short while on Cassel Works. Gave me plenty of help for my interview to get taken on by the company after my apprenticeship. Thanks Dave. RIP.