This may have been covered before in one of the incarnations of this forum, but thought I’d share regardless. Like many, my Beolink 7000 was developing suspected fuse/powerboard issues and after months of work (obtaining 3 parts units and replacing every component possible and then some) with continued blown fuses and  inconsistent readings from the Beolink when on the bench; I decided to opened up the charger and take some readings. Through testing  I discovered the C5 (small 25v 4.7uf) cap to be faulty, but C4 ( large 1000uf 25v) cap still well within spec despite its age. This struck me as unusual so I tested the remaining components on the board. Everything, but C5 tested normal. I proceeded to perform the same tests on the 3 parts units chargers I had (all V2 U.S. and E.U. models) discovering 2 additionally faulty C5’s, and one that would fluctuate between tests as faulty dead/ registering well out of its 20% range/4 times higher ESR compared to spec. After replacing both C5 and C4 in all the chargers in my possession, and using them to charge/power my Beolink 7000 (and one parts unit I was able to restore) over many hours my remotes issues ceased and neither have developed any further faults/problems. Looking through the past threads these power issues seem common, and usually attributed to the internal power board.  Those issues may very well be unrelated to what I was experiencing, however, with the high prevalence of C5 failures in my sample group, and the resolution of issues upon replacement, it probably would not hurt those with Beolink 7000’s with tabletop chargers (whether displaying issues or not) to replace these caps seeing as they are now all well over 30 years old.

Location: United States

B&O fan here since adolescence; on again off again Beoworld forum lurker since ‘07. Current lineup of complete systems includes: A painstakingly restored Beolab/System 8000 (Late model Beomaster 8000 driving M150’s, Beogram 8002, Beocord 9000, operated via Beolab Terminal, and housed in an SC80.1 cabinet. Beosystem 7000 (Beomaster 7000, Beogram 7000, Beocord 7000, Beogram CD 7000 connected through a Beomaster AV 7000 (for extra plug and play connections) driving Penta 2’s and Beolab 6000’s (via powerlink) through the AV7000 and a Beo Conna sub + CX 100’s on the Beomaster 7000’s internal amp. Beosystem 4400 (Beomaster 4400, Beocord 5000 (original model, 2 head revision), and Beogram 4004) driving MC120.2’s Finally, a Beosystem 5000 including Beomaster 5000 driving S80.2’s, CD50 (with separate, Terminal 50 remote) and both Beogram 5000 and Beogram 5005 record decks. Current singular pieces include: Beomaster 1600 (tractor belt version) S45-2’s, (refurbished) RL 140’s, Beocenter 7700 with matching SC70 cabinet and a few too many whole and parted Beomasters, Beocords and Beograms to list. Kind of an embarrassment of riches (or a hoarding problem in the making as my family puts it), but life’s short. More than happy to share or lend a hand if anyone needs anything.