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5 January 2025 at 17:12 in reply to: USA: ONE OWNER Bang & Olufsen Beovox S45 Speakers FOR THE CONNOISSEUR #62318
Dillen
ModeratorIf would be helpful, if you would state the location.
Country as a minimum. And also your idea of the price.Martin
Dillen
ModeratorHave you tried using a different pickup cartridge?
Martin
Dillen
ModeratorIt could be helpful if you’d let us know where the items are located (country as a minimum),
and also if you have an idea of the price.Martin
Dillen
ModeratorWhich amplifier are you using? And how are they connected?
Does the needle track the record?
Can you hear sound from the pickup cartridge itself when playing a record, if you put your ear close to it?Martin
Dillen
ModeratorThe relay is pulled when in standby. This can be confusing.
If it does not release when ordered, the amplifier will not be powered.
Check the relay driver circuit. A shorted transistor here would not be a first.
If you already suspect D2, that would also be a good place to start.Martin
Dillen
ModeratorCheck the start switch. These switches are known to oxidize and lose contact, particularly if not used for a long time.
Check for cracked solder joints where connectors are soldered to the circuit board.
All OK? Check voltage on motor leads.Martin
Dillen
ModeratorRecord on the platter?
Martin
Dillen
ModeratorYou can calculate the voltage drop across the emitter resistor and use that as the target setting.
Ohms law.Martin
29 December 2024 at 10:20 in reply to: HELP ME! :-( HO ROTTO UN BEOCENTER 9000 MANOPOLA 110V E PRESA DI CORRENTE 220V #62023Dillen
ModeratorAs mentioned above, parts are usually no problem.
What is needed here is a good repairshop or a skilled DIY/hobby-repairer.
There must be some in northern Italy.Martin
Dillen
ModeratorNo. The start-up sequence is all mechanical.
Martin
Dillen
ModeratorYes, you can set the tracking force as shown in the user manual.
But check your stylus first. It could be dirty. That’s one of the most common causes for distortion together with bad cantilever suspension.Martin
Dillen
ModeratorSounds like a problem with the tracking system.
It’s a opto sensor and a lamp, with an interrupter in between.
Either the lamp has died or the sensor has gone bad (they can deteriorate internally).
Some times both.
(Electronic faults in this circuit are rare).The Molykote you mentioned is a fast-hardening coating.
That’s not what you want here. You need a long-term (decades rather than weeks),
grease to make the carriage move smoothly and jerk-free.Lamp, sensor, correct grease is all available from Danish Sound Parts.
Martin
Dillen
ModeratorDillen
ModeratorAny DC voltage on the motor tabs?
Martin
Dillen
Moderator- Record ends can be troublesome.
Whereas there are clear standards for where the lead-in grooves are located (with reference to record center), there are no standards for lead-out.
Is the problem present with all records? - In standby place a tracking force scale under the tonearm. Press and hold >> for a few seconds and the tonearm will lower onto it. When done, press STOP.
- Depends on what stuff is on the arms.
Martin
Dillen
ModeratorBeocenter 5000 has a quite powerful and well-sounding amplifier.
Any passive speakers will suit it – the larger the better results.
It will drive even very large Beovox models, so you can let your room and wallet decide.
I would say anything from Beovox S45 up.Martin
Dillen
ModeratorSolder joints crack from microscopic vibrations, typically eminating from the mains transformer and from the general
operation of the deck.I’m sure it can be repaired.
Any french repairers here?Martin
Dillen
ModeratorWhat is the problem with the two original woofers?
Martin
Dillen
ModeratorThe local B&O shop may not be able to repair it. That’s probably true.
But there are countless others who can.
Parts are usually no problem. Most problems are caused by aging capacitors and bad solder joints. All perfectly fixable.Where are you?
Martin
Dillen
ModeratorTR4 or TR5 shorted.
Replace both (BC337).Martin
- Record ends can be troublesome.
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