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Hi, I'm hoping someone can help me out with a problem with my Beogram 4004 that I just acquired. The turntable runs about 5% too slow on 33 rpm. I try adjusting the thumbwheel speed adjuster but it will slow things down when I adjust towards "-" but when I try to adjust towards "+", nothing happens. Has anyone else had this problem?
The thumbwheel operates a variable resistor. It is likely that this needs replacing - poor thing is going to be nearly 35 years old! Not an uncommon issue.
Peter
Thanks. I did notice this morning that it is beginning to respond. Could it be that the thumbwheel hasn't been operated in a long time and I am beginning to loosen it up? I suspect the turntable may be running slightly slow from other more complicated issues but I'm trying to make speed adjustments with the thumbwheel to compensate.
Could be that the motor is loosening up as well. Leave it running overnight and see what happens!
I ran the turntable for a couple of hours and that has made all the difference. I tested a five minute song and it timed within one second of the time on the label (I don't have a strobe tester) at the zero setting on the 33rpm thumbwheel. That's 5% faster than yesterday. Apparently, it just wanted to be run. Thanks so much for the great advice. I'm so glad it turned out to be a simple fix.
I recommend you to open the deck, clean off all old and hardened grease and oil (using IPA or mineral spirit) and then lubricate everything again with sewing machine oil or similar. The problem you had with the deck turning too slow, will come back if not used for a longer period.
Collecting Vintage B&O is not a hobby, its a lifestyle.
Thanks. I've taken a look and can't see anything obvious. Supposedly, everything was lubrticated by the person I bought it from and visually that appears to be the case. Inside, everything is very clean with no dust or any kind of build up. But I suspect the unit hasn't been used much in awhile. I intend to rectify that.
singhaboogie: I ran the turntable for a couple of hours and that has made all the difference. I tested a five minute song and it timed within one second of the time on the label (I don't have a strobe tester) at the zero setting on the 33rpm thumbwheel. That's 5% faster than yesterday. Apparently, it just wanted to be run. Thanks so much for the great advice. I'm so glad it turned out to be a simple fix.
You can download and print a strobe disc here
Pick the one that fits your Hz, print it out and cut to size, use an indescandent lamp to light it.
Thanks for the tip. I didn't realize it was this easy. I printed one out and tested it last night. 33rpm and 45rpm are spot on with a few minor adjustments to the thumbwheels.