Yes, I've done many of these. B&O uses the very common Philips CDM mechanism. C2103 needs to be replaced with a 47uF 25V (preferably).
Being that the original blue Philips capacitor is now unobtainable, I have tested Panasonic FM type, and it works just fine. I also replace all the other electrolytics at the same time.
I am always skeptical of other technicians who truthfully do not know what they are doing, even though they are very good liars when they convince you that they know what they are doing. I surely hope that your previous technician did not start playing with the laser current adjustment, in order to force the laser to read. There are unscrupulous techs who do exactly that - the laser will read for a short time, and then burn with no option of repair.
So, I would just confirm with your previous tech whether he did make any adjustments. If so, work only according to the service manual, to minimise the chances of destruction when you apply power for the first-time after installing all new capacitors.
Menahem
Learn from the mistakes of others - you'll not live long enough to make them all yourself!