My pocket piano from 2014 is unusable all of a sudden. I switch it on as usual, it plays for a few seconds and then freezes without sound, just shows both lights on and won’t restart. Even when I switch it off and on. It needs a few minutes to reboot it seems, then I can switch back on, only to have the same thing happen all over again. I’m in London, anyone know anyone who could possibly fix this for me?? Paid of course! Any recommendations very appreciated.