Beogram 2400 – a generic question

[Wojciech Herchel]

Hello,

 

I have recently acquired a Beogram 2400, which happens to be working beautifully – one thing that is weird is that the turntable body moves up and down (together with the tonearm) in the chassis – or it bounces, if you will… is this intentional, or is there a screw missing somewhere fixing the actual turntable to the chassis such that it does not move?

[Mark-sf]

Nope, the bounce is intentional to prevent acoustic feedback. Enjoy your new purchase!

[Wojciech Herchel]

Thank you.

Second question I have that the stylus has a tendency to drag over the record a bit – particularly on the new/modern record – when it returns to home after finishing the record or pressing Stop – is it an easy adjustment? The stylus force is set at 1.5gr, it is a MMC20E. anything else that needs adjusting?

[Mark-sf]

If you remove the counterweight you will see a screw that adjusts the tonearm height when it is cued up. This should be 5mm above the record surface.

[Wojciech Herchel]

Hi – where is the screw though? on the outside part of the counterweight, where the slider is or on the inside – see the picture – there is a screw on the inside part of the counterweight, where I marked in white – as it is dark and was not visible on the picture.

[Mark-sf]

Lift the silver counterweight out of the arm and you will see it.

[Wojciech Herchel]

How exactly do I lift the silver counterweight? Does it slide off or something? Maybe a daft question, however I am a new to this, so wouldn’t want to break something by mistake…

[Mark-sf]

Grab the edge to the silver plate on the rear of the tone arm and lift it out. It fits using friction.

[Wojciech Herchel]

Got it, managed to take it out. The manual says the adjustment should be made with a counterbalance weight inserted though…? So I adjust, put it back in and measure and readjust if need be? stating the obvious, I can’t access the screw if the counterbalance is in…

 

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[Mark-sf]

The issue they are trying to address, is that when the weight is removed, the suspension will be higher on that side and the tonearm will show a great distance from the surface. Simply adjust and place it in but not fully seated so that you can check the height.

[Gabe]

Hi, I just did this on a B&O I got off eBay and fixed up a couple days ago.

Play a not critical record and have the tone arm run in the middle.

While playing, push nothing on the Control Panel and Pull The Plug to cut power.

While holding the tone arm, slide the clear plastic force indicator to 1.0 grams.

Set the B&O Gram Balance (Kit came with my MMC4000 cartridge in 1976) on the center of the record and place the stylus in the groove at 1.0 grams. (Saw a MMC4000 cartridge kit box on eBay about $90, no cartridge of course.)

Look to see if the balance teeters level. If not, use a small screwdriver to move the Lead Weight in the Tone Arm in and out. There is a small hole in the back of the tone arm to reach the slotted set screw in the weight. I think there is a small hole in the dust cover too, to reach through and access the set screw. While holding the tone arm protecting the cartridge, you can wiggle the weight loose by grabbing the edges of the small rectangular aluminum plate. Look at the set screw and see how it works. You can adjust it and press the weight back into the tone arm as well.

When your Tone Arm indicator is set to 1.0, and the Balance teeters at 1.0, you are golden.

Now set the sliding Tone Arm Scale to around 1.2 or whatever your cartridge and records need.

Remove everything placed on the record surface or elsewhere, and plug your B&O back into the power outlet.

Gabe

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[Gabe]

The Floating Suspension:

Remove the Platter and you will see 3 big slotted head screws. A quarter fits well.

Turn and raise the 3 screws fully counterclockwise to lock the turntable for shipping or moving with no bounce.

Turn the 3 screws fully clockwise to release the turntable to rest on its 3 leaf spring suspension.

Gently place you hand on the wheel and push down slightly, and you can feel the soft suspension.

Now place the Platter on the wheel, and the turntable should be “sprung” to just float. This is excellent.

I have an odd situation I cannot figure out. My 2400 that I bought in 1976 floats perfectly. But my eBay 2400 I just got and restored, requires that I place TWO platters on it to get it to “float”. The 2400’s are exactly the same, but the eBay one seems to have “stiffer” springs. Any ideas to fix this? Adjust or soften?  Thanks,

Gabe

[Mark-sf]

About an inch from each transit screw, there is a covered hole that accesses a screw that governs the height of each of the leaf springs. Make sure the motor runs smoothly with 2 records on the platter and the suspension is level and has equal top and bottom spacing when the records are removed.

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