For recap of the IR PCB, there is a guide from Leslie Nelwan at the Beoworld archive showing which caps there needs to be replaced.
https://archivedforum2.beoworld.org/forums/p/9016/89901.aspx
Look a little more than half way down.
When I replaced the capacitors in one of my BL5000s several years ago I found Leslie’s post very useful, especially for the capacitor values. I also made use of the photos from a 2010 post by ‘MartinM’ here: https://archivedforum.beoworld.org/forums/t/35123.aspx
The photos are no longer attached, but I kept a copy – see below:
Location: Warwickshire, UK
My B&O Icons:
