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Beolover SyncDrive: DC Platter Motor Replacement for Beogram 4002 and 4004 (Type 551x and 552x)

Late Beogram 4002 and the 4004 (Types 551x and 552x), which have DC platter motors instead of the earlier synchronous AC motors usually suff...

Thursday, April 16, 2015

Beomaster 8000: uProcessor Board - Jumpers/Resoldering Vias and Two New Capacitors

The Beomaster 8000 display board that I just restored came with the uProcessor PCB attached. So I checked on the B&O recommended jumpers that bridge the bunch of vias that often go intermittent on these boards. Here is the view from the top after removing the EMI cans:

And from the bottom. It appears that the jumpers were put into place already during an earlier visit to a service department:

I reflowed the vias that they did not cover, and then replaced the two electrolytic capacitors on the board:

After this I replaced the can covers and then cleaned all headers with a fiber glass pen. A thin DeoxIT D100L coat on the header pins finished the job.

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