BeoGram 5005 tonearm too low

[supertom1976]

Hi,

I recently bought a beogram 5005.

Unfortunately there seems to be something wrong with the tonearm. I hangs about 1 cm low (please see pictures). I have taking the carriage apart and tried to find anything related to this in the service manual but can’t figure it out.

I would love to get some advice on how to fix it.

I attached a bunch of pictures to show the problem.

Thank you for your help.

 

Best,

Tom

[Dillen]

Is it in play state?
If so, it looks right, considering the heavily set tracking force.

Martin

[supertom1976]

Hi Martin,

I think it is in play state. But the arms are not at the same height. Looking at other pictures online mine definitely looks out of place.
By playable state I mean arms do go to beginning of record (had to adjust start position slightly) and go over record and then return. When it starts it does lower the already low tone arm and it does raise it again, albeit only to the original low height again, when it returns.

[Dillen]

Does the white bar at the back tumble when lifting/lowering?

Martin

[supertom1976]

Hi Martin,

 

happy Easter!

The white bar at the back seems to be functioning well. It is in place properly and it lowers the arm correctly. This issue is the tone arm is just hanging/ balancing too low in the standard/ not playing position.

Please let me know if I can post any other pictures that would help with troubleshooting. I really would love to get the beogram going again.

best,

Tom

[supertom1976]

It’s almost like my 5005’s ‘normal position’ is the drop down height.

[Rolf2]

Hi Tom,

the tonearm should definitely be at the same height like the indicator arm. Did you try to adjust it like it is recommended in the service manual, chapter 5-2?

Kind regards,

Rolf

[supertom1976]

Hallo Rolf,

yes, I did. However screw C is broken on mine. It is however in the position not to lower the arm.

i think the problem has to do with the carriage. The arm just doesn’t seem to be balancing at the right height.

some more pictures for troubleshooting attached…

thank you for any help and advice.

 

best,

Tom

[Mark-sf]

Screw B is the one that you use to align the tonearm with the sensor arm. Also spring 1107 does not appear to be attached at the top in your photo.

[supertom1976]

Hi Mark,

sorry I meant screw B.

I detached the spring for the picture only.

 

[Mark-sf]

The spring is responsible for restoring the arm to its rest position. It appears you can move it to the proper level with your finger; therefore, it appears the spring has lost tension or was switched with one of the other springs. You should be able to confirm that by pressing on the spring’s top connection. The other possibility is that the counterweight is too far forward which for the tracking weight calibration. Ensure that when the tracking force know is at 0 that the arm floats when in Play mode.

[supertom1976]

Hi,

I don’t think the spring nor the counterweight are the problem.
I had another study of the service manual 6.6 and it appears the Schneidenlager B is missing. I couldn’t take a picture of it, but it feels flat. I think this is what’s causing my tonearm to hang low.

Now does anyone have any advice on how to go about fixing this. Can I glue something on, can I 3d print something, or do I need to start hunting for a replacement part?

Any advice, recommendations are welcome.

Thank you.

Best,

Tom

[Mark-sf]

Your picture of Part 1110, Holder, appears to be missing a rear piece S that sticks up and may have snapped off. The only solution would be to find a replacement.

[supertom1976]

Hi Mark,

When I compare my part 1110 with the picture in the service manual it appears to be OK. Both S pieces (the two little sharp cones) are there.

Can you please tell me/show me which part you think snapped of part 1110?

I still believe it has to do with “Schneidenlager B” of part 1108.

Does someone have a picture of the underside of part 1108, that I could compare with mine?

—and if anyone has any suggestions on how to fix/reattach that pin “Schneidenlager B”.

Thank you.

 

Best,

Tom

[Mark-sf]

Relooking at it the second pin may be there. However, if you had an issue with the knife-edge bearing B not being there, the arm would not work at all. It’s possible the are was not properly refitted. Try following these steps precisely again:

[supertom1976]

Hi Mark,

I am afraid the edge bearing B appears to be missing in my beogram 5005.

How can I fix this?

 

best,

Tom

[Mark-sf]

I believe that bearing is part of the arm assembly and is not available separately. You will need to replace the entire are or find a parts unit. Most B&O tonearms were a single part number.

[Dillen]

It’s cast metal.
It can come out if you heat it carefully, not melting the plastic, only softening the glue.

Martin

[supertom1976]

Hi Martin,

I am not quite sure I understand.

Are you saying you would try to take out bearing T (is this the connected top side of the cast metal pin on the bottom (edge bearing B)) and replace the complete cast metal piece with something else?

Before I take the whole thing apart again, would you have a picture, that could explain what you are suggesting?

Thank you for any help.

Tom

[supertom1976]

Ok, I have taken it further apart and took some more pictures.

Does anyone have the dimensions of the original edge bearing B part please (and any suggestions to bond a new pin to that surface)?

Thank you.

Best,

Tom

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