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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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12th Jun 2019, 12:59 pm | #1 |
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Tonearm Keeps Returning
I have an old Monarch turntable which works perfectly, except for the tonearm which keeps returning to the spinning record.
It happens when I use it in auto-mode, manual mode and also when I reject it. How do I fix this issue? |
12th Jun 2019, 3:14 pm | #2 |
Dekatron
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Re: Tonearm Keeps Returning
It is falsely thinking there are more records on the stack. Look for something not moving as freely as it ought to, connected with the overarm. It's held up above its normal position by the stack of records; when the last record has been dropped, the overarm falls back to the bottom and this is how the changer knows to shut off and not try to play another record.
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12th Jun 2019, 6:59 pm | #3 |
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Re: Tonearm Keeps Returning
Have a look underneath the overam, there should be a rubber collar (for want of a better word) on its spindle, it goes hard and breaks up which allows the overarm to drop further than it should.
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12th Jun 2019, 8:41 pm | #4 |
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Re: Tonearm Keeps Returning
Surely, if anything, that would make the mechanism shut down prematurely, which is the opposite of the fault the OP describes?
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12th Jun 2019, 11:34 pm | #5 |
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Re: Tonearm Keeps Returning
No it doesn't actually, if you look at the shaft it has an indent, which when the arm is down with no records, allows a lever to move inwards. But indent doesn't go all the way down the shaft, so if the arm travels too far down, the lever that should move in, doesn't.
I'll post a picture tomorrow. |
13th Jun 2019, 12:47 am | #6 |
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Re: Tonearm Keeps Returning
That deck is a UA15. Have you removed the old hard (brown) grease from the mech?
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13th Jun 2019, 10:46 am | #7 | |
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Re: Tonearm Keeps Returning
Quote:
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14th Jun 2019, 11:00 am | #8 |
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Re: Tonearm Keeps Returning
Is this the so-called "rubber collar" you are talking about?
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14th Jun 2019, 11:04 am | #9 |
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Re: Tonearm Keeps Returning
That's the one, but I've never known one of those go hard & brittle. Perhaps in the Malaysian climate this could happen, though.
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14th Jun 2019, 11:09 am | #10 |
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Re: Tonearm Keeps Returning
I’ve seen loads of them go hard and brittle, sometimes they’re not even there.
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14th Jun 2019, 12:59 pm | #11 |
Octode
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Re: Tonearm Keeps Returning
I'm with Michael, loads have gone hard and crack.
Looking at the corrosion of the overarm it suggest's it's been stood for years so would check for hardened grease as a starting point. Gaz. |
14th Jun 2019, 4:02 pm | #12 |
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Re: Tonearm Keeps Returning
Which part of the mechanism should I check out for hardened grease?
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14th Jun 2019, 4:19 pm | #13 |
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Re: Tonearm Keeps Returning
All of it!
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14th Jun 2019, 4:56 pm | #14 |
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Re: Tonearm Keeps Returning
Alright. I will do that.
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14th Jun 2019, 7:29 pm | #15 |
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Re: Tonearm Keeps Returning
In fact, i strip them down to the bare chassis and clean everything before re-assembling with fresh grease. |