[Dillen]

Good job!

Martin

[Dillen]

Good job!

Martin

[Dillen]

Good job!

Martin

[Dillen]

In order to check:

Bad tape.
Seized reel table. Take apart, clean and relubricate.
Problem with reel table brake.

Martin

[Dillen]

Bad muting relay?
Try speaker sockets 2. They bypass the relay. If sound is good there, replace the relay.

Martin

[Dillen]

That would see the tonearm move out of parallel with the other arm.

Martin

[Dillen]

Unless a wire is shorting to something, which would be very obvious, it can almost only be a case of a bad stereo decoder IC.

Martin

[Dillen]

Does the Signal meter deflect and/or the red tuning arrows flicker, as you travel the dial?

Martin

[Dillen]

You don’t have to clean the platter now.
It’s just that, if the platter was cleaned at some point, its coating may have been damaged.
Many owners, – particularly of the type 59xx decks, wash their platters or use
solvent-based cleaning products to make the platter shiny.
It may look nice, but the coating has then been washed away and the platters static discharging properties will have been ruined.
This will cause problems with static electricity, that charges up on the record from airs friction. In severe cases you can see “lightning”-type sparks from the record to surrounding chassis metal in a dark room.
The platter should not be shiny. Cleaning should only be done with a soft cloth

Martin

[Dillen]

Could it be a static discharge from the record/platter/surround?
Has the platter been cleaned with anything other than a soft cloth?

Martin

[Dillen]

Move the doors on the string.
Losen the small clamps, move them and tighten them again.

Martin

[Dillen]

Can you hear the sounds also if you play a record with the Beomaster turned off or its volume at zero?

Martin

[Dillen]

Bad pickup cartridge?
The faint sound you here – does it correspond to what you what expect to hear from the record?

Martin

[Dillen]

Is the clack and scratch sound coming out of the speakers or from the Beogram?

Martin

[Dillen]

Capacitors working with negative voltages will often have their positive pin to ground.
Check before assuming it’s wrong.

Martin

[Dillen]

For connecting to the Tape input you will need a RIAA.
The Phono input, however, should be at correct level – unless the internal RIAA in the
Beomaster has been disabled. It’s not that unusual to see. In that case, you should only
hear very low signal, and very treble-rich, because the RIAA correction is missing.

Martin

[Dillen]

Beocord 3500, 4500, 6500, 7000 were all produced with both drive versions.
As were Beocenter 8500, 9300, 9500.

As mentioned already the two drive versions are very different mechanically and not interchangeable,
but I can’t tell any difference in sound quality between the two versions either.

Martin

[Dillen]

The drives are not interchangeable.
The controllers are also different.
– And the controller holds all the alignment trimmers etc. Setting all this up to a new drive is a HUGE task.
I would recommend keeping paired drives and controllers together.

Is there an issue with a drive?

Old version:

New version:

Martin

[Dillen]

You must take off the black bands (pull them a little to release them from the potentiometer slider).
Then take off the two wire springs, one each end, and open the clutch box.

Martin

[Dillen]

The small “couplings” or what shall we call them are held by snapping in to indentations in the hexagonal shaft.
Just pull.

Martin

[Author]

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