Question about Jensen JTA460 Turntable

Open Question

Is there a way to adjust weight on teh tone arm? my 33 records seem to be skipping

Posted by on

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Rock-ola 448 jukebox skipping how to repair


The stylus might be worn or of the wrong type. A simple tone arm needs a round stylus and if an elliptical type (intended for a long S-shaped tone arm) has been fitted by mistake it could skip.

If nothing is wrong there, the remaining conclusion is either the mechanism is maladjusted or the tonearm bearing has a tight spot. In that case the tone arm should be removed and the shaft examined under strong magnification and any irregularities carefully removed, eased, blended in using a very fine abrasive (12,000 - 20,000 grit) and then ensuring the shaft and bearing is thoroughly clean apply a little very light machine oil and reassemble and readjust the playing weight...

Apr 07, 2017 | The Audio Players & Recorders

1 Answer

THE TONE ARM ON MY ROCKOLA 459 SLIDES OVER THE RECORD WITHOUT PLAYING.


Hi
It sounds as if the tone arm has become unbalanced. Make sure the turntable is on a firm flat horizontal surface and at the opposite end of the arm from the needle there will be a weight and a means of altering the position of weight on the tone arm. This weight keeps the needle on the record but only lightly when positioned correctly. If positioned too far from the pivot post the needle will as you have experience skip virtually straight across the record. You need to adjust the weight so that the needle just sits in the groove and plays without being too heavy. It is best to use a record you are not too worried about for this testing as the test record can sometimes get scratched.
Hope this is helpful, if so would you please register that with Fixya
Cheers

Dec 11, 2014 | Audio Players & Recorders

1 Answer

All 33 records seem to be skipping. Is there a weight adjustment option for teh tone arm?


there is a counter weight on the rear of the tonearm that will add weight to the stylis (tracking force)

Apr 29, 2013 | Jensen JTA460 Turntable

1 Answer

Tone arm skipping records.


The anti skate adjustment. And if you scratch @ all....move the weight all the way in and take off the little extra one that screws in on the back. Also a great tracking needle is a M44G.

Mar 03, 2010 | Technics SL-1200 Turntable

2 Answers

Record keeps skipping arm won't move toward center of record


Sounds like your arm is tracking too light. To proper set the tracking weight on most units you need to zero the arms balance so that it is balanced just at the surface of the record. Once that is done using the weight on the back of the tone arm, or whatever system your unit uses, there should be an adjustment by turning the weight on the arm or perhaps a lever near it. You owners manual should really explain all this and give the recommended tracking weight in grams and fractions of grams. Each weight is different for different styli. Take a look at your operation manual and adjust the weight. Let me know how you make out.

hardrocko

Thanks for using FixYa

Feb 22, 2010 | Numark ttUSB Turntable

2 Answers

I have an old Califone 1400 all records skip new needle


There's not enough pressure to keep the stylus down in the grooves. Increase the weight (on the end of the arm).

Feb 10, 2010 | Audio Players & Recorders

1 Answer

Technics sl 1200 MK2 WEAK SOUND


Regarding the poor sound quality (and possibly the skipping):
check the needle condition, see if exchanging it with a needle (or the entire pickup head) from a working turntable does any good.

Check the pickup connection pins (contacts on the pickup head and on the end of the wires coming through the arm from the unit), see if there is any dirt or oxydation and clean the contacts if necessary, also check for any damage to the wires.

As for the skipping - a heavily worn needle may affect the sound quality and cause skipping as well - if cahnging the needle (or the pickup head) doesn't make a change, try to realign the weight on the tone arm so that the pickup head will become a bit heavier, this could help somewhat (before you actually try to realign the weight, try to put a small coin or a small weight of some kind on the pickup head while it is playing a record, if the skipping goes away, you need to realign the tone arm weight).

This could also be a problem with the tone arm lifting mechanism (may be obstructed by something or damaged so it won't let the tone arm sit properly onto the record and "grab" the groove).

I just mentioned a few things you might want to check, but don't take anything for granted, the problem may as well be elsewhere in the unit.

regards

Triarcuate

Sep 22, 2009 | Technics SL-1200 Turntable

1 Answer

Sears Tape deck/Turn table skipping!


Hi the pennies will mess up the stylus. There should be an anti skate setting at the back of the turn table, a round adjustable bit with numbers, increase the anti skate and then use the balance weigth (weight right at the back of the arm that turns to get the weight right. Set the anti skate with the tone arm light, then increase the weight a bit. Hope that helps

Jun 14, 2009 | Technics SL-1210 Turntable

1 Answer

Arm does not track properly but skips across records


Just guessing, but it sounds like you haven't counterbalanced your tone arm.  When a tone arm skips, it's usually because there's too much counter weight on the rear of the tone arm.  You want between 3-5 grams, but first you have to calibrate your tone arm (balance it so you know where zero is).  If you don't know how to do this, refer to the Ion directions called "Tonearm Setup" in the instructions.  

Jan 03, 2009 | ION Audio iTTUSB Turntable

1 Answer

Re:


Hi Vat,
Although I live in Canada now, I was born in the former
Czecholsovakia. While I spent a year in the Czech Republic in
2006, I was amazed how advanced their technology was, in
comparison to Canada or the US. If you want modern technology,
Prague is the place to go. Anyway ...

1) As I said before, do NOT adjust the tone-arm weight up
and down. This setting must be set to match the stylus and
the cartridge !!! The wrong setting is very bad.

To get the weight adjusted correctly, do the following.

a) Check the cartridge and stylus (needle) specifications, on
the WEB if necessary.

A typical tracking weight is between 0.9 grams to 1.5 grams,
but this very much depends on the needle geometry. To much
weight will damage the needle and the record, but

so will too little, because the needle will not stay on the
surface, skipping or mistracking on loud passages.

Note that the tracking acceleration is proportional to the
the square root of the loudness, multiplied by the frequency
squared. So if the tracking force is too low, the needle will
bounce over high frequencies and damage the record as
well as the needle's tip.

2) Once you know the correct force for your needle, adjust
the rear weight for ZERO force, such that the needle just
floats weightlessly in the air. If your turn-table has an anti-
skating adjustment, set that to zero as well.

3) At this point the tone-arm should be totally weightless,
and should neither touch the plater nor swing up/down
by itself. It should float halfway.

4) A this point, adjust the rear weight's dial (not the weight) to
read zero. Note that the dial will slide, while you hold the
weight still. You have now calibrated the tone-arm's zero
point.

5) Now, adjust the weight (with the dial) to read the desired
tracking force, for example 1.25 grams.

6) Now adjust the anti-skating dial to the same number as
the rear weight. This setting compensates for the radial
(towards the center) component of the friction vector,
caused by the needle riding on the record groove, at some
specific (average) tone-arm angle.

7) Your tone arm is now balanced, and you should not
touch it after this, accept for minor adjustments.

For brand new records, you may lighten the tone-arm
by 10%. For old records, you can make it a little heavier.
Similarly, you can adjust the anti-skating to prevent a
record from skipping, but a bad record should be played
only once (and stored on your computer).

8) For some tone-arms and cartridges, the cartridge pitch
(up/down angle) is also adjustable. This requires a special
jig or gauge, supplied by the cartridge manufacturer.

The pitch can be adjusted either by the use of screws or
wedges, and by lowering / raising the rear gimble. On my
Technics SL 1200, the gimble elevation is adjustable with
a large ring, and my SURE V15 cartridge came with a guage
for adjusting it correctly.

9) It may also be possible to adjust the cartridge's yaw and
radius, but all of these adjustments should only be done
using the correct gauges and by strictly following the
cartridge installation manual.

10) NONE of these adjustments should effect the tone-arm
cueing or return process. There should be plenty of
clearence if the cueing mechanism is working properly,
except, perhaps, for the gimble elevation, if the cartridge
is unusually tall.

11) Is the cuing mechanism (i.e. the tone-arm lifter)
mechanical or hydraulic ?

Is it the lift consistent or does the tone-arm drop down
with time?

Does the tone-arm move parallel to the plater, or does the
stylus height change with tone-arm position (yaw)

You are looking for a mechanical defect in the cuing
mechanism.

12) How much over all lift do you get between the down position
and the up position? This should be at least 8 to 15mm

If the cuing mechanism is worn out, it may not move enough.

If it starts too low, it may move enough but not raise the
needle enough to clear the record.

If the cartridge is tracking too low, you may have to
remove some wedges or spacers between the cartridge
and the head, or lift the rear gimble if it is adjustable, or
get a different tone-arm head, that matches the cartridge
profile.

Finally as silly as this sounds, make sure that the
platter is fully dropped and properly engaged. If the
plater is too high, for what ever reason, this would also
cause the needle to drag.

Also make sure that the rubber mat on the plater is the
right one and that it is not too thick.

Martin


installation manual.

Jul 02, 2008 | Audio Players & Recorders

Not finding what you are looking for?
Jensen JTA460 Turntable Logo

Related Topics:

56 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jensen Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5056 Answers

John
John

Level 2 Expert

509 Answers

Kazim ERGUNEY
Kazim ERGUNEY

Level 3 Expert

577 Answers

Are you a Jensen Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...