Beogram 1900 possible motor issue

28 replies
Use a puller.
Grab under as close to the spindle as possible, not to bend the copper plate.
It's easily distorted.

Martin
I'll measure the distance before doing that. Thanks

Parts order shipped this morning :)

Location: Central Oregon

Parts arrived today and the deck is spinning like a charm. What a difference those bearings made. Thanks for the advice!!! I'll get some pics posted ... maybe video.

Here's one pic for tonight.

Location: Central Oregon

Took me awhile to deal with some cartridge retipping and got the MMC6000 back, that is now on the 1900. Sounds really good. But I have two issues. I hope to dig in this weekend, to check.

First is I get a hum, mostly left channel, once stylus is on the record and passing a signal. I did try without the ground wire attached, and carefully touching RCA's and phono cable. I'm pretty sure it is going to be on the circuit board.

Second, 45 speed on the button doesn't seem to work. It's the funkiest design I have ever seen for a control button, but maybe I'm doing it wrong.

Other than than, other controls work, set down is correct and arm/weight/VTF is all correct.

I know it was mentioned to replace two, or more capacitors. C1, C3, C4, C5 were mentioned earlier in the thread. Maybe that will fix the hum. But to access the circuit board, do I remove the flywheel? I have three pdf service manuals and I don't see any info on this.

I would guess that the 45 rpm speed adjust is oxidized.

I am open to ideas. After getting the motor rebuilt and having it work nicely, and a new flywheel belt, I'm not willing to give up on this deck.

Location: Central Oregon

For your hum problem, does it go away when the arm is at rest? I would carefully look at the shield and tonearm connections inside. Also is is a DIN or Phone cable?

Regarding 45, there is a relay along with the mechanical switch and active circuit. Does the platter not spin at all when selecting 45 or does it not change from 33 to 45?
Thanks for the quick reply Mark!

Once the arm lifts off the record, and rests ... dead quiet. This is phono cable (original with new Neutrik plugs).

The platter only spins at 33 ... so when pressing "45" it acts the same.

Location: Central Oregon

Yes.

Location: Central Oregon

Use a puller. Grab under as close to the spindle as possible, not to bend the copper plate. It's easily distorted. Martin
Hi Martin @dillen, hi @vintage-hifi-dude I have almost the same problem. The motor starts bit slow with 32rpm) and runs properly after 10-15 minutes or so. The copper wheel spins approximately 4-5 seconds without any noise when I run it by hand. Do I have to replace the bearings as well? If so I assume I need these bearing (with one collared)  - correct? The main issue is to get the copper wheel of the spindle. How do get this of? What kind of puller did you use? Do you have a photo or so? I don't want to destroy or break anything as the rest of the turntable is in a very good state. Thanks in advance for your support.

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