Question about Audio & Video Receivers

Open Question

Oil damped cueing riser on 1975 Sanyo full automatic turntable will not rise. Must manually raise and lower tonearm and then catch it before it reaches the end of the album, or the return mechanism will cause the arm to slide across the face. Otherwise, the machine works perfectly. As a matter of fact the only thing that's ever been done was a belt replacement about 15 yrs. ago. Thanks, John

Posted by on

6 Suggested Answers

  • 518 Answers

SOURCE: Cueing Problems on Technics SL-1300MK2

Usually the damping fluid is to let the tone arm lower slowly, lifting is usually a mechanical link. Read THIS.

Hope that helps...

Geno

Posted on Apr 01, 2008

MJS_1
  • 150 Answers

SOURCE: Problem with autoreturn of tonearm

This very much depends on the type (and vintage) of the
turntable.

Very old turntables used a system of mechanical CAMs,
slaved to the main plater. Once engaged (usually through
a hinged/retracted gear-tooth), the platter would spin the cam,
which in turn would lift the tone arm, move it back home,
shut off the power and disengage itself after one complete
revolution.

This system could be mechanically triggered with the power off,
just by swinging the tone arm towards the center, and spinning
the platter manually by hand. To fix it you had to make internal
mechanical adjustments, or replace worn out levers, wheels,
bearings, springs, etc...

A more modern turntable will use electrical sensors,
such as a micro-switch under the tonearm gimbals,
which is triggered as the tonearm swings towards the center.
A second switch is coupled to the stop/ return button.

Once the mech. is triggered, it can derive its power from the
plater (as before) or use a separate servo motor to lift
and return the tone-arm. The viscously damped cueing
mechanism can also be involved in lifting the arm during
the return cycle.

At the hi-tech extreme, a microprocessor can control the
whole works through the use of selenoids and stepping
motors with optical or magnetic sensors to trigger it,
position it and disengage it.

0) Note:
During all testing, remove the record and cover the
stylus with its protective gate to prevent damage.

If the stylus slides out of the cartridge, like it did on the
Shure cartridges, remove the stylus gently and put it in
a safe place to avoid damaging it. You do NOT want to
ever drop the stylus on the spinning rubber platter surface.

But leave the main head and cartridge in place for normal
tone-arm balance.

Turn off your amplifier, or turn down the volume to zero, to
prevent damage to your ears and the speakers if the needle
does fall when it shouldn't

1) Assuming that this is a fairly modern turntable, with
a gimbal mounted tone arm (the large double hung ring
bearing at the back for swinging both ways) and a
counter weight for setting the stylus pressure...

and possibly an anti-skating adjustment as well...

It is fair to assume that the cuing lever is what lifts
the arm vertically, regardless of the swing return mechanics.

2) The premature stylus drop (during return) is therefore
caused either by a cuing defect, or by lift timing,
either mechanical or electronic.

The stylus weigh setting is NOT an issue here, that
is determined by the stylus and cartridge specifications,
and must be set correctly to prevent record and stylus
damage.

Note that both too much and to little weight is BAD.
Too much weigh is obvious, but too little will cause
mis-tracking, distortion and premature record wear.

Similarly, and incorrect tracking pitch or yaw will also
cause early damage, as will incorrect anti-skating for
a particular stylus pressure.

3) First of all, test the cuing lever at several different tone-
arm angles, to see if it stays up, or droops down with time.

If there is a problem, check the springs, viscous damping..

Take the ****** apart from below, and see what gives.
Is it mechanical, hydraulic, or electronic ?

4) If it is electronic, you have a control/ timing problem,
which requires a service manual and a qualified electronic
tech to fix it.

You should be able to check any sensors, switches
or motor yourself, though.

5) If the cuing lift system is mechanical, check the levers
and cams:
What is driving it ?
Is it broken ?
Is worn out ?
Is it out of adjustment ?
Is it slipping ?
Is it stuck ?
Is one of the springs all stretched or missing ?

6) If the lift is hydraulic or pneumatic, check for leaks.

7) If the manual lift seems to work, but the automatic return
drops it...

why?
what is controlling it ?
how is it linked it to the arm return mech ?
Is there a coordination/timing problem ?

Have fun.
Please rate my answers.

Martin.

Posted on Jul 01, 2008

  • 104 Answers

SOURCE: Turntable tonearm returns but starts playing record over again.

http://www.vinylengine.com/library/pioneer/pl-570.shtml
on page 8 of the above service manual for your model it shows 4 electrical switches that tell the computer what 'state' the mechanism is in at any given time. Either one or more of the switches are intermittant or the mechanism has dried up grease that is slowing down the operation and basically gumming up the works. the old grease would have to be removed and replaced when it is causing binding. The switch just to the right of where is says "microswitch ksf-023" is an 'open air' type and so would be the most likely suspect. it simply needs to be cleaned with a super fine file designed only for cleaning switch contacts. THIS SERVICE SHOULD ONLY BE PERFORMED BY QUALIFIED PERSONNEL ONLY!!!!!

Posted on Feb 11, 2009

  • 12 Answers

SOURCE: Technics 1210 tonearm skates when cueing vinyl backwards

I've seen this on technics turntables before. Try tightening the screw on the arm.

Posted on May 21, 2009

  • 1 Answer

SOURCE: tonearm lifter in UP position - how to fix

I have also had this problem with the same model turntable. I opened mine up and the problem seems to have been that the grease on the arm lift and cueing lever was gumming up the linkage between the two. (I suspect that my turntable hadn't been used in some time.) I managed to free up the parts by manually working the the arm lift (pressing it down) several times. I'm not sure that I needed to open up the chasis for this fix but it did help me to see what was going on. Good luck with yours.

Tim Orange

Posted on Jul 19, 2009

  • 2976 Answers

SOURCE: tonearm skips imediately to center of album

Your needle (stylus) is either worn out or not seated properly. If you continue to try using it without the problem being corrected, it will ruin your records. You can check it to see if it's worn out by dragging your finger over it, lightly, from back to front only. It should feel like a small pin. It should also be seated into the groove on the tonearm. If this doesn't correct the problem, replace it.

Posted on Sep 08, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a denon DP-7F direct table (1989)ust wondering about the point of the arm the head of the cartridge housing is very close to the record any way to get that adjusted higher?


If the tonearm balance and tracking force for your cartridge are adjusted correctly, ignore it.

Register and download the manual for free at vinylengine.com

http://www.vinylengine.com/library/denon/dp-7f.shtml

Eeeww, page 8 says the counterweight snaps on and the tracking force is factory set. Any self-repecting turntable should have precise manual balance and tracking adjustments. Or your counterweight is not on? Either way, I'd look seriously at getting the stylus checked for excessive wear if it's tracking too heavily. The manual says 500 hours of normal use. You'll be carving up your recordings.

Maybe post the question to the guys at Vinylengine

Apr 30, 2011 | Audio & Video Receivers

1 Answer

I have an older QL-45 turntable that needs tone arm adjustment- I don`t know how to set the weight so it doesn`t lower down to album so hard or heavily


I can't find the specific turntable. Who makes it?

This should work with some modifications for your specific controls...

Make a note of the tracking force setting.


Make sure the turntable is level.


Unplug the power to the turntable.

Using the tonearm elevation control, raise the tonearm.

Manually move the tonearm in toward the platter.

Manually rotate the platter ClockWise a few turns to disengage any cueing mechanisms.

Set the Stylus Pressure/Tracking setting to 0.

Disengage the tonearm elevation control. The tonearm will either float or drop. This is why we have no power, just in case it hits the platter.

Adjust the counterweight until the tonearm floats exactly horizontal. Use the flat portion of the tonarm rest as a gauge.

Return the tonearm to its rest.

Dial in the prescribed tracking force on the Stylus Pressure/Tracking control. Play records.

Apr 11, 2011 | JVC Audio & Video Receivers

1 Answer

Have a Sansui compu edit p-m70 turtable. I turn


Lift off the turntable mat and the platter. Near the tone-arm, remove two screws holding down a panel and then inspect the tonearm belt. They wear out and stretch out and this could be the problem. Replacement is easy and does not require any special tools or further dissasembly.

Lock light indicates that turntable platter speed has reached correct speed.

Aug 21, 2009 | Sansui Audio & Video Receivers

2 Answers

Minimal volume for my turntable


A turntable is always compatible with any sound system. The problem here is that turntables need and pre amplified input to work, and since you don't see turntables anymore, most sound systems only have level inputs like the CD in, Auxiliary, etc. like yours. You will need to buy a small in-line amplifier made especifically for turntables. Although it might be hard to find one and in some cases it will cost a bundle, but start by asking about such a device at your local electronics store. They will probably at least be able to cue you in to where you can get one locally. If all else fails search the net for:"Turntable pre-amp" and you should get all the info you need and find a few online stores that sell them.

Jul 08, 2009 | Denon AVR588 Receiver

1 Answer

45 and 33 sound slow


Here's a procedure for setting the tonearm...

Look up the recommended tracking force for your cartridge/stylus.

Unplug the power to the turntable and place it on a perfectly level surface.

Set the Tracking Force and AntiSkating to 0.
Using the tonearm elevation control, raise the tonearm.
Manually move the tonearm in toward the platter.
Manually rotate the platter Clockwise a few turns to disengage any cueing mechanisms.
Disengage the tonearm elevation control. The tonearm will either float or drop. This is why we have no power, just in case it hits the platter.
Adjust the counterweight until the tonearm floats exactly horizontal. Use the flat portion of the tonarm rest as a gauge.
Return the tonearm to its rest.
If you don't have a Stylus Tracking Force Gauge. Dial in the prescribed tracking force and a corresponding anti-skate reading. Play records.

May 04, 2009 | Audio & Video Receivers

1 Answer

Turntable stylus not staying on record


Since there are no tonearm adjustments the only solution in the manual that comes close is to make sure the turntable is level. The other possibility is the no-brainer of checking the stylus cover is NOT rotated down, preventing the stylus from contacting the record.

A quick and dirty test of tonearm balance being too light would be to unplug the power and manually move the tonearm over the platter. Gently lower it to see if it floats in the air or lightly but firmly contacts the platter. That won't tell you if it is tracking properly but it might indicate or eliminate tracking force as the culprit.

Apr 26, 2009 | Audio & Video Receivers

3 Answers

Garrard turntable model 630s


There are a couple of things that need to be done here and there is no guarantee that the unit will work, but I have been successful in the past.

First remove the platter and clean all of the grease out of the unit. With all of hte grease removed, replace the platter and make sure that it turns freely. Regrease the unit one all of the old is removed. Next you will need to clean and treat the rubber drive wheel.

Good luck,
DAn

Mar 21, 2009 | Teac AG-V1050 Receiver

1 Answer

Have an older sherwood turntable model st-905 linear direct drive. when i press the button the tonearm humms but will not move


I had a similar problem and found that manually moving the arm back and forth along the tube several times "loosened up the mechanics. They get stiff after sitting a long time. B e sure to protect the needle!

Dec 11, 2008 | Sherwood Audio & Video Receivers

1 Answer

Cueing Problems on Technics SL-1300MK2


Usually the damping fluid is to let the tone arm lower slowly, lifting is usually a mechanical link. Read THIS.

Hope that helps...

Geno

Apr 01, 2008 | Audio & Video Receivers

1 Answer

TurnTable


Chances are, you have what is known in years past as a "magnetic" type cartridge on your tonearm. This unit is a much better device than the old ceramic type, but does require a "preamp" to bring it up to the level you need to make it comparable to other sources. Many audio dealers carry such a device, or can order one for you. It's simply called a stereo preamp...Accordianman

Oct 13, 2007 | Sony STR-DE597 Receiver

Not finding what you are looking for?
Audio & Video Receivers Logo

Related Topics:

73 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio & Video Receivers Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

The Knight
The Knight

Level 3 Expert

68323 Answers

yadayada
yadayada

Level 3 Expert

61037 Answers

Are you an Audio and Video Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...