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Using iMic. Noise gradually builds up even when turntable is unplugged from mains

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Confirm mic-line switch in right position and apply a contact spray in the switch and move switch many times.


Posted on Jul 21, 2008

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Using turntable (audio technica at-lp 120) with built in pre amp the sound is distorted and broken up. the turntable requests phono turned on to use. Does the receiver have a pre amp or boost signal...


A turn table produces sound voltage in the millivolt range. If you have it connected to a receiver that has a phono input and the turn table is pre-amplified, you are overdriving the receiver and it is clipping the audio and making it sound bad.

Jan 17, 2015 | Yamaha RX-V592 5.1 Channels Receiver

2 Answers

Pluging in a turntable


I dont understand why you would want to connect a turntable into your phone. Can you explain?

Mar 30, 2008 | Audio & Video Receivers

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I have vestax 05pro2. Left channel works but out of one speaker. The turntable input is good. Im thinking Its either the channel fader, or the rca inputs for that side. Has anyone had this problem?


Hi,
Here's a solution to see if you have a problem with either your receiver or turntable.
The turntable has 2 RCA's one red for right channel, and one white or black for left channel, which plug into the back of the amplifier.

  • Unplug both RCA from rear of amplifier.
  • Plug in a cd or dvd player into those inputs on the amplifier, the sound will be lower but it will give you an indication if the amplifier is ok or not.
  • If you have sound on both channels left and right then the amplifier is good
  • If you still only have sound on left channel, then there is a problem with the right channel input on the amp.
  • If your amp, is good, unplug the cd /dvd player.
  • Put a record on and start playing the record
  • Plug the white or black RCA from the turntable into the rear of the amplifier marked left, you should have sound.
  • now unplug it from the left and plug in into the right red RCA socket, if you have sound the amplifier is working fine.
  • if there is no sound there may be a problem with the stylus cartridge on the turntable
  • now lets reverse the test
  • unplug both RCA from amp.
  • Plug the red RCA into the left socket on amplifier, if there is sound, turntable is working fine, if no sound there is a problem with either the stylus cartridge or that red RCA cable.
  • now unplug the red RCA from the left side and plug it into the right side socket
  • if there is no sound there may be a problem with the stylus cartridge or RCA cable.
I hope this helps

MobileJB

Jul 15, 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

2 Answers

When i hook up my B &O turnable to Audio 1 Or Audio 2, i got sound but at very low volume even when jacked up to max. all other components blast out audio from my speakers.


It's logical, the audio output level for the turntable is very low (depending on the model about 1-5mVolts) while the line inputs (where you try to connect the turntable) can handle audio levels of 500-775mVolts. As I can see your amplifier is not able to handle this kind of inputs (assuming that your turntable is a typical one, without any include preamplifier) In case you insist on connecting this turntable on this amplifier there are some solution to suggest (mainly using a kind of pre-amplifier between the turntable and the main amplifier) but in order to be sure for what to suggest to you, please clarify me the brand / model for this turntable.

In case of a problem or clarification or further details needed, don't hesitate to post me a reply before rejecting my answer.
If you are satisfied, rate my solution with the "thumbs" or (even better) add a testimonial.

Thanks and regards
Please kindly rate this solution
Stelios
direct fixya link: http://www.fixya.com/users/technical114

Feb 05, 2011 | Yamaha RXV367 Receiver

2 Answers

Have a garrand 630s turntable and the switch to change the speed is stuck. any advise how to repair this?


Whoopsy daisy! The Garrard 630s is an Idler drive deck based on the (presumably) earlier SP25MK IV module. Given it's 's' shaped arm.

!WARNING!

BEFORE STARTING WORK! MAKE SURE POWER OR MAINS IS OFF/ UNPLUGGED! RISK OF ELECTRIC SHOCK.

-Remove the mat from turntable if possible. if you're lucky to have aluminium center piece, remove that. Underneath that you'lll find a cir-clip holding the turntable in place. Take a small screw driver and gently remove clip from the center-hub and lay aside.

-Now lift the platter off the center-hub or spindle-bus. You might see a big grey gearwheel which is called the cam-wheel, situated at about one o'clock. (Some models have it under the chassis.)To your left; a small, black ,rubber wheel with a metal core. Directly next to it, a two- (or three) step (Brass) pulley protruding from underneath the chassis. That is the motor but not likely your problem.

-Plug in mains and move lever to "Manual". The action should result in the small rubber wheel positioning itself against the spinning pulley and spin in opposite direction. If motor runs smooth. Switch off by moving the lever from "Manual" to "Off" and disconnect from mains.

- Now, with the power off, try to move the speed/size selector lever to and fro. If the small rubbber wheel doesn't reposition itself, something inside is jamming the lever. (and it's a long lever, running under the chassis.)


garrand-630s-turntable-wnws3xra4jjngat22msnheyz-5-0.jpg
(SP module chassis, used up to 1979)

For your problem you need to lift the unit out of its plinth/ casing.
-Make sure all power's off and give slack to the audio and the mains cable. Depending on the plinth you might need to screw out a clasp holding the cables in place. Unscrew the bottom plate if possible. If not. Fasten the two transport screws which you find in the back on the left and on the right in the front.
-Make sure the arm is locked in its rest and gently turn unit over. Make sure unit is seated firmly and that you don't damage the arm!

garrand-630s-turntable-wnws3xra4jjngat22msnheyz-5-1.jpg
(SP Module bottom view)

-Find the Speed/Size selection lever and try to move it... Look just below the motor and see what is happening. You see two tension springs and a "Block-like" piece of steel which should be able to move freely up and down the spindle to which it's mounted. The squiggly looking piece makes sure that speeds can be selected whilst the turntable is working. (it detaches the black rubber wheel from the inner rim of the turntable and pulley to enable repositioning without damaging parts.

-See if anything obstructs movement of parts. Look if parts are bent forcefully, warped or just worn out.

!WARNING!
Note that tension springs are mounted in the chassis at certain "values" while assembling the unit in the factory. excessive force in removing tension springs may result in malfunction or even a dysfunctional unit. Place tension springs back in exact positions.

-If necessary, take the levers apart and clean thoroughly. Make sure all parts are free from dust dirt and grease.

-Circlips can be removed using a small (magnetic) screwdriver and an old handkerchief covering the circlip to be removed so they don't launch themselves into oblivion.

-Number parts (small stickers) before dissasembling counting up. Reassembe counting down again.

-After degreasing: apply tiny (!) amounts of Singer-oil on parts that may cause friction with eachother... Keep in mind that applying dabs of grease may result in decreased performance when the wrong oil or grease is used.

Happy fixing the Garrard 630s.

Jan 11, 2011 | Teac AG-V1050 Receiver

1 Answer

I added a turntable to my system NAD 72296 receiver and the record played for two minutes before the receiver quit. Now I cannot even get the cd player (which worked yesterday) or radio to work . . .but...


hi,
check ur speakers first is it working or not. u said above that the sound is getting through the head phone. the headphone out is also coming from the main amplifier by reducing power using resistors. so amplifiers have no problem. also check is there is any switch for speaker A and B and is it OFF or ON.
ok

Dec 27, 2010 | NAD Audio & Video Receivers

1 Answer

Problem occurs when using STRDG520 in 5.1 channel mode


Its may be because of over heating of main Audio Amp IC please check it and apply thermal compound between IC and Heat sink if required.

Jun 22, 2009 | Sony STR-DG520 Receiver

2 Answers

My turntable works on old reciever and not new one


A traditional turntable only works on Phono (which contains special preamplification and equalization circuitry designed to raise the the level and flatten out the response of a phono cartridge).

After you do that, iIf you're not having hum problems I wouldn't worry about the ground. Or try it again on the FM Ground.

Feb 20, 2009 | Sherwood RX-4105 Receiver

1 Answer

Poor sound


You need to connect most turntables to a PHONO input or buy a PHONO preamp. Many newer receivers do not have a PHONO input. The AUX port you are using would work fine for a device like a CD player, but turntables need to be amplified. You can buy an external Phono pre-amp from Radio Shack. I don't know anything about this site, but something like this device should work for you. http://www.phonopreamps.com/tc400pp.html

Jun 19, 2007 | Pioneer VSX-D711 Receiver

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