I appreciate the answer Mark, I am waiting for a new solder station and will update
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Beogram 2000 motor (1983 - 1987)
17 replies
Okayyy… I removed the broken plastic piece and it now runs smooth and quietly!
But… It runs backward ?
I disassembled again and looking at the way th parts fit into each other, I don’t see how I could have reversed the polarity by mistake.
But… It runs backward ?
I disassembled again and looking at the way th parts fit into each other, I don’t see how I could have reversed the polarity by mistake.
Bonjour Didier,
The magnet polarities are reversed, not electric polarities.
Always put marks before disassembly, to avoid that kind of mistake.
Classic!
The magnet polarities are reversed, not electric polarities.
Always put marks before disassembly, to avoid that kind of mistake.
Classic!
Jacques
Whoops - yes, sorry I should have said that.
And don't worry - we've all done it!
And don't worry - we've all done it!
Bonjour de Montréal, chartz!
This is the insides of the motor... you can see the cracked plastic I removed at the top, they were originally on the side of the magnetic ring. I didn't have to disassemble further
Now I don't see how I could have reversed the magnet polarities since the shaft can only go back one side (so that the brushes can touch the commutator.)
Similarly the brush plate can only be reassembled back one way since the square hole accommodates the chip on the board...
Or maybe I misunderstood something
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This is the insides of the motor... you can see the cracked plastic I removed at the top, they were originally on the side of the magnetic ring. I didn't have to disassemble further
Now I don't see how I could have reversed the magnet polarities since the shaft can only go back one side (so that the brushes can touch the commutator.)
Similarly the brush plate can only be reassembled back one way since the square hole accommodates the chip on the board...
Or maybe I misunderstood something
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Hello Didier,
I am about to attempt the same surgery on the same motor (mine is from a Beogram 1800 I am restoring). A couple of questions please:
1) did you have to take the pulley off ?
2) Did you figure out the polarity issue after reassembly?
Thanks (to anyone who can help)
Amine
I am about to attempt the same surgery on the same motor (mine is from a Beogram 1800 I am restoring). A couple of questions please:
1) did you have to take the pulley off ?
2) Did you figure out the polarity issue after reassembly?
Thanks (to anyone who can help)
Amine
Location: Montreal, Canada
Beomaster 3300, beogram 3000, beocenter 9500, beogram 4002, beovox RL-60, Beovox RL-35, Beolab 6000
I performed this to my Beogram 6500 motor (Matsushita FG-SERVO MMX-4H2RPB ). The ticking noise is gone, but the motor now runs at "full" speed only. I suppose the Frequency Generator must have been messed up in the process, although I was very careful not to damage the fine brushes during the assembly process.
Does anyone have some measured values for the PCB (would make it easier to identify a faulty component)?
Any assistance would be greatly appreciated.
Does anyone have some measured values for the PCB (would make it easier to identify a faulty component)?
Any assistance would be greatly appreciated.
Location: Norway
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