I replaced the BM5 motherboard with one purchased on eBay. Works (again) like a charm!

Of course, in the absence of BeoMaster 5 maintenance tool, the product has no serial number and the software updates cannot be performed. Surprinsingly, the Bang & Olufsen splash screen shows at start up instead of EPIA.

I reiterate my question: does anyone has the BeoMaster 5 maintenance tool?

Also, a probably naive question: can the original motherboard be repaired? It seems that all defective motherboards/modules of B&O products are sent back to Denmark for recycling/rejuvenation before being sold again (?)

Everything back to normal thanks to the help of forum members, fortunately. No help at all from B&O repair: the only comment I got from them was "démerdez-vous!" The French speaking people of this forum will appreciate...

It is possible to repair the motherboard. An electrician can replace the caps (which is usually what is bad) and then it works again!

Yes, that's what I thought too. It would be a shame to just get rid of the board, while the replacement of some components can give it a second life.

I have one BM5 motherboar on my working desk.

did try to change some capacitors but till now no luck.

and i find out that i have some  short circuit on the board.

I have not yet discovered where.