[Dillen]

33uF or 47uF is not important. The important parameter is the capacitors filtering properties.

The capability of playing CD-Rs lies mainly in the focus travel and the focus setting (don’t mess with this unless you know exactly what you are doing!).
CD-R is not a standard format. Even if most CD-players will play them, don’t expect them all to do it.
A normal factory CD has the info-layer sandwiched between two layers of polyester.
A CD-R has the info layer on top of the disc. This puts the info further away from the laser lens, and the laser needs
to be able to focus on this longer distance to read the disc. Not all lasers can do that (or were manufactured with this in mind).

The kit from Danish Sound Parts has all caps for the servo board.

Martin

[Dillen]

The noise could also come from the amplifier.
Which amplifier are you using?

Martin

[Dillen]

If would be helpful, if you would state the location.
Country as a minimum. And also your idea of the price.

Martin

[Dillen]

Have you tried using a different pickup cartridge?

Martin

[Dillen]

It 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]

Which 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]

The 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]

Check 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]

Record on the platter?

Martin

[Dillen]

You can calculate the voltage drop across the emitter resistor and use that as the target setting.
Ohms law.

Martin

[Dillen]

As 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]

No. The start-up sequence is all mechanical.

Martin

[Dillen]

Yes, 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]

Sounds 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]

Danish Sound Parts har originale her.

Glem de kinesiske forfalskninger på Ebay og allevegne.

Martin

[Dillen]

Any DC voltage on the motor tabs?

Martin

[Dillen]

1. 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?
2. 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.
3. Depends on what stuff is on the arms.

Martin

[Dillen]

Beocenter 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]

Solder 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]

What is the problem with the two original woofers?

Martin

[Author]

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