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Hi,
I currently restore a Beogram 6000, model 5512.
The problem is that the arm does not move at all horizontally.
In oder to have a clarer view of what happens, and in order to prepare the restoration (cleaning, new grease, etc...) I have extracted the mechanism from the main chassis and see what happens:
-when I turn the long screw by hand, I see the screw turning, but the arm does not move at all.
So my question: is the white plastic part dead ?? <-- shown into the red circle on the attached photo
OR could it be another reason ??
Thank you very much for your reply
Hi
Seems you are on the right way, if you turn the spindle by hand and the tonearmassembly does not move to the left or right could be that the part no. 210 Bearing nut is worn out or missing.
Maybe it is not correct mounted, there is a small gap in the nut that should fit into the upper part no. 212 Holder to block the nut that it doesn´t turn with the spindle.
Don´t try to move the tonearmassembly by hand to not destroy the nut which is made of plastic.
Take out the holder and have a close look, and you will see what I mean ;-)) btw. you could clean everything from old grease.
Let us know if you get further.
Kind regards
Christian
Thanks Spassmaker: I will do this tomorrow (it is currently the night in my country), in order to check what is going wrong, and of course to clean evenything from old grease as usual.
As shown on the photo, I do not see any nut (part 210) at the end of the long screw: but is this nut required to get the arm moving ? I don't understand why it would be required ??
But I am not very optimistic, if the white plastic part is destroyed, where could I find a new one, or a fix ?
It’s unobtainium but it’s a simple tapped bead so you could probably fabricate one easily.
Jacques
no idea how I could build a new one
But more urgent: is there a nut (part 210) on your 4000/6000 devices ???
it appears on the Service Manual but I don't see it in my B0-000
Yes there is!
---> do you mean that there is a nut ? do you have a photo ?
if yes, according to my measurement it should be a M5 nut
That’s the piece you have to fabricate.Without it, the arm can’t move, obviously.
So I need both : a M5 nut + the plastic part ?
OK chartz, I have totally cleaned and applied new grease on every part, and therefore the arm moves perfectly when I turn the long screw : it looks like I have fixed the problem (without totally understanding what happened, but it seems good).
The remaining problem is that I have found a spring, and I have no idea where it comes from : look at the attached photo. I do not believe that it comes from the mecanism because I have not seen it before...
Do you know where it comes from ??
Hummm I have picked up a photo with a miror (see attachement) and it seems that the part 221 is in place, unless I have not correctly identified the part 221.
I have not dispounted the parts between the two "legs" 185 and 200.
But if I am correct, it is not the part 221 (it looks similar), what could it be ??
Looks like one of the springs for the lid screws.
Martin
Looks like one of the springs for the lid screws
Do you have a part number ?
(do you mean the large plastic transparent lid of the B.O., or do you mean a smaller lid somewhere inside the turntable ?)
As Martin wrote it seems to be the spring under the screws that holding the large tranparant lid. Often found loose somewhere in the beograms of this type.
There are two of the one left and one right part 26 2810066
Have you tried to turn the long threaded spindle by hand? Does the tonearmassembly move then?
In the picture from Rudy which chartz attached you see two long rails underneath the rails you see the threaded spindle and underneath that you see the small plastic part 210 "Bearing Nut" what we are talking about. It has also a thread fitting to the spindle (M5?)
This nut is some kind of clamped from part 212 "Holder".
If the spindle part 213 turns the nut moves the tonearmassembly left or right depending of the direction you turn the spindle.
I can't tell you better.
Best regards
As Martin wrote it seems to be the spring under the screws that holding the large tranparant lid. Often found loose somewhere in the beograms of this type. There are two of the one left and one right part 26 2810066
Yes it could be this part : I can't check right now, but it should be this one ! Congratualtions !
I have completely dismounted the rails, etc..., cleaned them and applied a lot of new grease: therefore the arms moves horizontally !
I have also cleaned and lubricated all the axis as recommended: all the parts move effortlessly; some axis were very hard to move, as they had not seen a fresh grease over the last decades...
Thank you very much !
I am in the process of changing all the electrolytic caps, resistors and VR of the mainboard. I still have to change the 5 V.R. before mouting back the motherboard into the chassis: hope it will run again, because it was dead when I have received it (no light at all, and a fuse blew when I turned it on...