Beogram 3000 speed problem. My finial solution

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Alex173 Posted: Sat, Dec 24 2016 9:02 PM

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Well kinda a long time lurker but 1st time poster

Im a long time beo lover of the vintage equipment. Love the style and love the quality. And I have a few beograms.  One of my favorites is the Beogram 3000 that I have   A beautiful machine!  But like any 3000 it has the speed problems that plegs most of them.

So mine I went threw time and time again took the motor apart a few times and cleaned and lubed a few times with no improvement. I was getting real frustrated and was ready to turn the 3000 into a clock!

Then I was at goodwill looking at a cheap Yamaha P220 turntable that was belt driven and had minimal controls and DC powerd with adjustable speed.  

I noticed the big pully on it seemd to be real close in size to the sub-platter on the 3000 so I took it home 

so I removed the motor and controls 

you can see the two small green pots are for speed adjustment  one switch is for 33/45 the other is a micro switch for turning the motor on and off

The motor loosely mounted 

The controls mounted 

Had to make room for the transformer and access to the speed pots

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Alex173 replied on Sat, Dec 24 2016 9:15 PM

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Belt and pully 

For wiring I just taped the micro-switch in the on position and just connected the 3000 motor power to the mains of the Yamaha control

A couple Vids of it working 

https://m.youtube.com/watch?v=pvCjzCmQNqQ

https://m.youtube.com/watch?v=20Ez_u7NMTM

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Alex173 replied on Sat, Dec 24 2016 9:18 PM

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Thx

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Dillen replied on Sun, Dec 25 2016 7:38 AM

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Welcome to Beoworld.

Well, I'd wish I could make this a positive post, but, to be honest...
I don't understand...
You call yourself a "lover of vintage equipment"...
Why not do a decent repair to the Beogram then, instead of bodging like this?
Those original 1-phase AC motors are wonderful.
They will all need a good cleaning and fresh sinter oil pressed into the bearings, that's
more than common after 35+ years.
If the deck runs good for a short time and then fails again, you haven't oiled it the
right way, keep in mind that these are sintered bronze bearings.
If the deck ran with a wrong belt (typically too tight and with completely wrong elasticity), the
tension of the belt will have drawn the idler hard up against the stepped motor pulley and introduced
too much sideways pressure on the motor bearings. This will cause the bearings to act as brakes and
they will wear out in days rather than decades.
In these cases the bearings will need replacing, but so far all motors were repairable.

As one of this forums technical advisors, I will have to advice AGAINST doing what is shown in this thread.
Seen as a Bang & Olufsen product, it's practically worthless now and the work done to it has made
it both dangerous and illegal.

We could've helped you.

Martin

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Alex173 replied on Sun, Dec 25 2016 8:30 AM

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Well I have been threw the motor neumrouss times and it would not function correctly.  We all know B&O had a recal of these motors. So it's not as simple as just maintenance.    Since there are no new motors avalable the next place for this deck was the scap heap. You should be thanking me.

And since I'm a lover of music a B&O deck that works is a lot more valuable to me then one that doesn't 

Merry Christmas 

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Dillen replied on Sun, Dec 25 2016 4:24 PM

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Alex173:

Well I have been threw the motor neumrouss times and it would not function correctly.  We all know B&O had a recal of these motors. So it's not as simple as just maintenance.    Since there are no new motors avalable the next place for this deck was the scap heap. You should be thanking me.

And since I'm a lover of music a B&O deck that works is a lot more valuable to me then one that doesn't 

 

 

Merry Christmas 

I should be thanking you?

Don't get me wrong, I have a huge respect for people who want to have a go at
repairing something themselves but I have an even deeper respect for people who realize when
they are in too deep and leave the job to someone with the skills, tools and experience needed.
If they take notes and learn from it - even better.

If you repaired and/or restored a Beogram, then I would tilt my hat.
I enjoy reading about good restorations and I also enjoy when people come up with
ideas to solve hard-to-crack problems - as long as those ideas are perfectly safe and well-thought.
You practically destroyed a perfectly restorable Beogram - and actually a Yamaha deck as well
and the result is both illegal for household use and dangerous.

This Beogram was only destined for the scrap heap because you didn't have the skills to repair it properly.
It was not the slightest bit worse than any other Beogram I see for repairs here.

B&O recalled these motors?
Why?
when?
And how?

Normally, the only problem with these motors is dried lubricants, more or less seizing the bearings,
causing speed problems, - and that can be repaired.
All other problems with these motors are down to misuse or mishandling, moisture from bad storage,
wrong lubricants, wrong belts, wrong alignment, damaged bearings from wrong handling etc.

Reoiling sintered bronze (Oilite) bearings is not something you can do in ten minutes using WD40 or 3-1.
Actually that would only add to the mess and make things worse. Repeat and it will be even worse.
It takes the correct oil with the right additives and at least 24 hours in a vacuum bath, preferably
at a somewhat high temperature (around 60C is what I use as it seems to work fine).
Clean everything VERY good, acetone and a lint-free cloth (no sharp tools anywhere!)
Do the oiling right, get the spindle shim'ed back into perfect alignment in the motor housing and
the motor be will good for the next 20 years or more.
There are no metal-metal contact between moving parts in this type of motor (when they are done correctly),
so they can (theoretically) last forever.

No, there are no new motors for this model to be found anywhere. And even if you should find one that
was never used, it would have dried out too and would be in need of the same service.
There are NO new parts to be found for ANY B&O older than 20 years or so. But that doesn't stop us from
restoring and repairing.
Some of us are known to sit down and produce new parts if that's the only solution. We rarely give up.

If your motor had become damaged, be that from misuse by a previous owner or from your attempts, you
could ask for help in this forum and I'm sure someone would've offered assistance - or even
a replacement motor.
I do a lot of Beograms of all types, and because of the time it takes to reoil bearings, I usually
do a bunch of motors at a time, which again usually leaves me with two or three spare motors in
the drawer, ready to  mount.

The only thing I can think of when it comes to thanking you, is that you
chose a reasonably common Beogram 3000 and not a rare deck.
Perhaps it can still be rescued? All that's required would be an owner with a love for vintage equipment and someone
with the skills to do it right.
These Beograms are wonderful decks.

Martin

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srdaley replied on Tue, May 9 2017 1:54 PM

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Martin,

I'd like to get me beogram 3000 52xx motor inspected/repaired.  Can I send it to you?