I don't know the DM500 -- but is there any reason for thinking that C422 isn't simply a 22 microfarad 33V electrolytic? Anyway, how did you burn it out? And can you be sure that you haven't damaged other components too? If you're not absolutely clear about what you're doing, it would be safer to leave well alone.

I know it's not implemented. But that seems a surprising omission, so I just wondered whether it could be implemented.

I'm not sure whether this is the right place to ask... but on the Timer page of the Web interface, only the TV bouquets are available for selection. So a radio recording or event cannot be set up via the Web interface. Would it be possible to make the radio bouquets show up there?