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turntable with stylus "Jumping" on a know good lp record

havols

Well-Known Member
Hi Audiokarma members
I write from Brazil
I have some vintage turntables here with me (sansui sr212; sansui FR 4060; sansui sr2050; pioneer pl-a30)
Everyone is working, but two of them have a seemingly simple problem, but that I have not yet been able to resolve.

They are the Sansui FR 4060 as the Pioneer pl-a30.
These two turntables have already been lubricated (except the mechanism), new belt, both with new AT95e cartridges.

The problem is that somewhere in the disc (especially in middle or end of each side record) the needle jumps, and jumps, without any risk in the disc, or dirt on the needle. Even after cleaning the needle, and using a new 180 grams record, the needle jumps.
I've already tried adjusting the bias, and I've also put it to the maximum and minimum ... but the stlus keeps jumping, in aleatory position of record.

I'm believing it's some lubrication on arm, or mechanism adjust...i really don't know.

Does anyone here have any experience with this problem?
Thank you all.
Havols
 
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Thanks gary7
I will try.
This jump is exactly like if the disc have some large scratched in one side, and stylus stay jumping this scratch, in the same points for 4 ... 5 times, then go forward for about 10 seconds, and jump again in another point.
Regards
 
How does your anti skate look? Watch it while the record is playing. If there is any binding, that could do it.

I've also had this problem with a brand new stylus that just needed about 24 hours of breakin. After that, it played and sounded great!
 
Thanks BilboBaggins
I will see it on pl-a30, that i am using
After i will post result
Thanks
Havols
 
Make sure the tonearm lift (the curved bar in front of the tonearm pivot, that actually lifts the tonearm) has clearance between it and the tonearm, across the entire range of tonearm movement, when down. Contact between the arm tube and the lift during play can cause skipping.
 
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