Bang & Olufsen Beomaster 2400

BeoMaster 2400 Volume

This beautiful piece of design from Bang & Olufsen is now 36+ years old. Some features include touch sensitive controls (pioneered on the Beomaster 1900 a year earlier), an ultrasonic remote control and 5 preset FM stations.

BeoMaster 2400 PCB

As with most electronic equipment, electrolytic capacitors are common points of failure. A summary of why this can happen is explained here. Replacing these and the bridge rectifiers, also known to be a problem point, will significantly extend its useful life.

Assembly of BeoMaster 2400

It’s quite a complicated assembly, mainly due to its compact design.

BeoMaster 2400 Removed Electrolytics

The replacements are all smaller than their 70’s counterparts and long-life versions have been chosen where possible. The rectifiers have been swapped for uprated versions.

BeoMaster 2400 Replaced Capacitors and LDR Volume Control

The replaced components can be found in the table below and have been highlighted in the BeoMaster 2400 Service Manual.

B&O Reference Type Value Replacement Part # Mfg V Rated Hours Link
4200098 Cap 100uF EEUFR1H101 Panasonic 50V 6000 @ 105°C Link
4201065 Cap 10uF EEUEB1J100S Panasonic 63V 5000 @ 105°C Link
4200298 Cap 1uF EEUEB1J1R0S Panasonic 63V 5000 @ 105°C Link
4200296 Cap 2.2uF EEUEB1J2R2S Panasonic 63V 5000 @ 105°C Link
4200332 Cap 2200uF MAL202117222E3 Vishay 40V 8000 @ 85°C Link
4200097 Cap 220uF EEUEB1E221S Panasonic 25V 5000 @ 105°C Link
4200100 Cap 22uF EEUEB1H220S Panasonic 50V 7000 @ 105°C Link
4201061 Cap 4.7uF EEUEB1J4R7S Panasonic 63V 5000 @ 105°C Link
4200092 Cap 47uF EEUFR1J470 Panasonic 63V 5000 @ 105°C Link
4200305 Cap 5000uF ECOS1VP682CA Panasonic 35V 3000 @ 85°C Link
4200109 Cap 470uF EEUFR1C471 Panasonic 10V 6000 @ 105°C Link
8310275 B.R GSIB2520-E3/45 Vishay / I.R Link
8300277 B.R VS-KBPC602PBF Vishay / I.R Link
5370174 Pot 220R CB10LV221M Tyco Link

9 thoughts on “Bang & Olufsen Beomaster 2400”

  1. Hello Oliver, I spotted your link on the B&O Facebook site regarding this recent repair of yours to the 2400, most impressive! I own the 3500 which looks very similar on the inside. Recently I blew something like a fuse while attempting to insert my headphone jack when a CD was still playing (silly move I know, now!) anyhow I had hoped it would be an easy task replacing the ‘blown fuse’.. well I’ve only found 3 fuses and they all appear to be ok. Do you by any chance have a suggestion as to what else it might be I could look for? I’ve had the Beomaster hooked up to a nice pair of powered BeoLab 2500’s so unless they have something installed which might have blown?… or the Beogram CD3500 itself?
    Any worthwhile suggestions or links to further information would be greatly appreciated, heres hoping:)
    Kind regards
    Wayne Gibson
    PS: also the internal Din plugs connecting to the Phono & CD leads seem a little fragile (only one Phono channel working) so I’m keen to track down a source for replacement Din sockets also.. cheers.

  2. What would the most likely cause of a Beomaster 2400 taking several minutes to warm up? Until the unit warms up the unit hums.

    Thank you,
    Marc

    1. Hi Marc – The two large 5000uF capacitors in the power supply (see part #ECOS1VP682CA). The whole unit is quite awkward to take apart – good luck!

  3. Solder all suspect joints. Those diode bridges don’t fail as much as the solder joints on them do. Thick leads and heated thru use. There are these signs that you can use to find suspect joints. External jacks that are mounted on the circuit board, another failure point. Still have the cassette deck somewhere, it is 12 volt internally you could put it in a car.

  4. Hello I recently acquired a Beomaster 2400 and the FM 1 does not light up, or when pushed turn off any other FM that is lit up. What is the easiest fix?

    1. I followed the service manual, linked in my post above which is a pretty good guide. It’s fiddly and need a bit of patience though. Good luck!

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