Maybe more luck here, at lp140xp problem

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caius_1987
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Maybe more luck here, at lp140xp problem

Post by caius_1987 » 13 Jan 2020 22:32

When the speed is quartz locked if I put the antistatic brush on the record it sometimes moves to a higher speed (+3,3%) after being previously locked on the correct one. It maintains the new speed unless I stop and start it again. Am I missing something? :?:

lenjack
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Re: Maybe more luck here, at lp140xp problem

Post by lenjack » 13 Jan 2020 23:56

It's apparently trying to compensate for the drag of the brush, but it's overcompensating. Since it doesn't come back to normal speed when you lift the brush, I'd call it a defect. I'd contact Audio-Technica, and hope it's a warranty issue. Even if not, I want it repaired.

caius_1987
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Re: Maybe more luck here, at lp140xp problem

Post by caius_1987 » 14 Jan 2020 13:12

Thank you very much! I will see what can be done

Direct driver
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Re: Maybe more luck here, at lp140xp problem

Post by Direct driver » 14 Jan 2020 13:16

lenjack wrote:
13 Jan 2020 23:56
It's apparently trying to compensate for the drag of the brush, but it's overcompensating. Since it doesn't come back to normal speed when you lift the brush, I'd call it a defect. I'd contact Audio-Technica, and hope it's a warranty issue. Even if not, I want it repaired.
I agree with the exception that if it is out of warranty, I'd just put up with it. Having an AT LP120 USB myself, and using older DD's that don't have a "quarts lock button", I'd have no problem with just moving the slider to where it needs to be. Yeah, it's a workaround, but I would see it as one of the least impactive workarounds known to man. :D

caius_1987
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Re: Maybe more luck here, at lp140xp problem

Post by caius_1987 » 14 Jan 2020 13:30

The thing is this model has a different strobe than others I’ve seen: whatever speed the dot line used is the same. It is marked 0 and has large dots
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blekenbleu
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Re: Maybe more luck here, at lp140xp problem

Post by blekenbleu » 14 Jan 2020 18:45

Applying a carbon fiber anti-static brush typically slows my AT-LP140XP only briefly, if at all. Testing just now and pressing hard enough to slow it, then speed recovers quickly after brush removal, whether or not slider is set to 0, if quartz lock is set prior to brush application.

Conclusion: one of our two AT-LP140XPs is exceptional.

caius_1987
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Re: Maybe more luck here, at lp140xp problem

Post by caius_1987 » 14 Jan 2020 19:47

Are you using the Felt mat? I took it off and it seems not to do it anymore. Recovers really quick now

blekenbleu
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Re: Maybe more luck here, at lp140xp problem

Post by blekenbleu » 21 Jan 2020 16:43

I use felt + thin layer of expanded foam + Hudson silicone rubber mats
to get correct vertical tracking angle in range of tonearm height adjustment.

caius_1987
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Re: Maybe more luck here, at lp140xp problem

Post by caius_1987 » 21 Jan 2020 20:53

Sent it back today. Hope they cam fix it..😔

Quartz_Lock10729
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Re: Maybe more luck here, at lp140xp problem

Post by Quartz_Lock10729 » 23 Jan 2020 21:37

My LP120 does something similar -- I'm using the stock felt mat (I'm going to replace this soon because it's really designed for back-cueing DJ use and introduces too much static electricity, to say nothing of the trouble it causes me when dusting off records) and I normally put the platter to 78RPM to do a surface dusting with my velvet brush/bar, letting the platter spin and applying the brush gently so after a few revolutions the dust is "swept off" by the brush. When I do this, the platter is slowed somewhat depending on how much pressure I have applied, and when I take the brush/pad off the record, the speed snaps back to 78RPM. From there, I press the START/STOP button to brake the motor before switching to the correct playback speed for that particular record, whether it's 33 or 45...

At any rate, I wish the OP luck; I just sent in my $1000 Cambridge Audio 4K Blu-ray Disc player for repairs, so I know what kind of a royal pain in the ass this process can be.

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