Just reaching out on the off-chance really, in case there are any known common issues with the MCP5000 that I might be able to repair myself. I bought a job lot of old B&O stuff recently and it included an MCP5000, and the condition really is excellent, like new, not a mark on it.  It would be a shame to waste it. Of course I had to go out and get 4 D batteries for it (who has those in the drawer these days!) but nothing happened - the display(s) don't come on, and the buttons don't do anything.  I'm not sure if the MCP5000 would work with my Beosound 4 anyway, but I did the phone camera test on the IR transmitter, and there does not appear to be any reaction to button presses. It's in such good cosmetic condition, it would be a shame not to have it working, but I'm not much use with a soldering iron and a multimeter (although I have both), I'm more at home repairing the mechanical parts of a turntable or tape deck than this kind of thing. So, just in case anyone has any tips, any common issues?  I have taken a look inside and it looks like new inside too.  The only test I have performed is to test the battery contacts to make sure there is no loose connection, and I'm getting 6V, so they are working fine. If anyone thinks they might be able to fix it for me, quotes are welcome!