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Does the Sony PS-333 have a phono pre-amp switch, and when did they start making models with that built in feature? because recently I was trying to get the platter freed up since its been sitting up doing nothing for the past few years and I noticed there was a switch under the plater where the drive belt is and I was wandering is that the pre-amp switch?

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6ya6ya
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Posted on Jan 02, 2017

djproaudio
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SOURCE: I want to remove the platter on my stanton str8 100

This is held down by a magnet. So, all you have to do is lift up. There is nothing else holding it down. You might need to slightly tap the center spindle with a rubber mallet, or similar, to disrupt the magnetic hold.

- OPTiC
The Technics Expert
Technics Repair
DJ Equipment

Posted on Dec 30, 2008

  • 42 Answers

SOURCE: sony ps-lx2 turntable clicks when spinning

It seems something may have come loose over time or history, but you will have to delve inside to see what it is. It sounds as though the fault should be obvious.

If you do not want to do this, a repair shop should have no problem. I assume that the deck is working ok otherwise.

Posted on Jan 25, 2009

  • 5 Answers

SOURCE: put a brand new drive belt on my sony PS-LX250H and the sound

If the belt is installed correctly (around the center ring on the underside of the metal platter & around the motor post), try adjusting the SW screw on the underside of the unit that apparently fine-tune adjusts speed. It fixed the speed on my turntable - more info/instructions on it are posted under Mocamom1's question & solutions regarding PS-LX250H speed adjustment.

Posted on Jul 12, 2009

dunnbiker
  • 8546 Answers

SOURCE: Platter/motor won't turn

I don't know the answer, but you have written one of the finest, most comprehensive problem descriptions I have come across. In mechanical scenarios, that is priceless. I'm sure a turntable guru will see it and go, "aw. I know what that is". Good Luck.

Posted on Feb 15, 2010

  • 1 Answer

SOURCE: my sony ps 333 is suddenly running at very high

Hola, ayer solucione este mismo problema en una PS 333, primero, prueba presionando hacia abajo la resistencia variable del pitch, si ves que las revoluciones bajan, deberar desarmar la resistencia y asegurarte de que el contacto que esta al centro este realmente haciendo contacto con la base. saludos desde Chile!

Posted on Dec 13, 2010

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1 Answer

Very low sound after new needle installed


Firstly the cartridge could be faulty or incorectly wired. I think what you are refering to is a magnetic cartridge pre-amp. If the turnatable has seperate audio connectors these should be plugged into the "phono" socket. And not an "aux" or "CD" input. If there is no phono socket, you wouldn't be able to plug a pre-amp in anyway. Yes the deck if it is built in should have this pre-amp built in. However these pre-amp can fail!
To test if the pre-amp is working, even if has no phono socket, unclip the leads to the cartridge. With your amp on, touch the end of each wire with your finger. On two you should hear a buzz - one for each channel. If it's not loud then there's a problem with the pre-amp. If you do get a decent buzz the cartridge is faulty.
You can also trace the wiring to the pre-amp inside the unit, if you wish to fix it. It will almost certainly end up at an IC, which should be replaced.

Jan 15, 2013 | Audio Players & Recorders

1 Answer

When i make phono input..The Volume come very big.And all other input selecter volume come normal.


As long as the phono input is only being used for a record deck the most likely cause is a faulty magnetic cartridge pre-amp. If you are connecting any other device to these sockets, remove it and place it in another socket. If you haven't got enough sockets you can get a switching box to solve the problem. If you are getting the problem due to a record deck, make certain it hasn't got a built in pre-amp first, check the cartridge and wiring to it and all deck connections. If still no luck then you will find that you need to replace the pre-amp. It will be a single IC, which can be found by following the wiring from the phono sockets inside the amp.

Sep 14, 2010 | Technics SUV500 2-Channel Amplifier

1 Answer

I have tried too hook up my Gemini XL-500, to a Sony Digital Audio DTS discrete 6ch Amp , but get very low volume, tuner & cd dvd, volume is fine, does this have anything to do with the ground?...


No! The amp must have a magnetic cartridge pre-amp to increase the sound level. If it has one it will say "phono" on the inputs on the back and have a "turntable" - or "Phono" selector switch. If it doesn't have one (many new surround amps don't) you won't be able to play it properly untill you get a "magnetic cartridge pre-amp". This will make the signal loud enough to be used on a normal aux imput of the Sony.

Jul 16, 2010 | Gemini XL-500 Turntable

1 Answer

Sound only from left side speakers!


If you put the good channel from the deck into the right and then left phono imputs of your amp, the sound should come out from the left and right speakers. If it only comes out from the left, then the amp as a right hand channel fault. Now if other devices work on both channels, then it's the pre-amp for the phono socket that has a fault on it. You should be able to find this by following the wires from the phono socket. If you touch around that pre-amp you should get it to buzz on either channel (where it joins with the main pre-amp). Doing this with a screwdriver will pin-point where the faulty part is (working backwards). PS don't short anything by touching to bits of metal together with the screwdriver.
Magnetic cartridges need a small pre-amp before they can be past to the main pre-amp. That's why you can't hear anything with the deck plugged into another line socket.
If you get signal on both left and right speakers with the above test the deck is to blame.

Jan 11, 2010 | Sony PS-LX300USB Turntable

3 Answers

Distorted sounds


The AT-PL120 uses a magnetic cartridge to extract a music signal from the record. Magnetic cartridges all put out a very weak electric signal, and so their output must be strengthened, or amplified, to where it is as strong as the input from, say, a CD player. This amplification is provided by a pre-amp. If your receiver has dedicated "phono" inputs the pre-amp circuits are already in the receiver. If you do not have dedicated phono inputs you must either buy a pre-amp, or buy a magnetic cartridge turntable with a pre-amp built into itself. The AT-PL120 has a built in pre-amp. You can switch the AT-PL120's preamp on or off. The switch is located under the platter at the back side of the turntable. Take the platter mat off and turn one of the platter's holes to the back and you should see the switch through the hole. If you push the switch to LINE OUT the preamp is turned on and the turntable sends an amplified cartridge signal out the cables which MUST be connected to a receiver inout suitable for a CD player (a "high level" input). If you push the pre-amp selector switch to PHONO OUT the turntable sends the weak unstrengthened cartridge signal out the cables which MUST be connected to the receiver's dedicated PHONO inputs so the signal can be amplified with the receiver's own pre-amp circuits.

If everything is set wrong (i.e. LINE OUT (pre-amp on), and connected to phono inputs) you are applying two steps of strengthening to the turntable's signal which is too much. The resultant sound will be garbled. Try not to do this!

The other way to do everything wrong is set the pre-amp switch to PHONO OUT (pre-amp off) and connect the turntable's cables to a high level input. If this happens the turntable signal receives no amplification and the resultant sound will be thin and weak.

May 09, 2009 | Audio Technica AT-PL120 Turntable

2 Answers

Low volume on PS LX250h


This turntable has a built in pre-amp, under the platter is a on-off switch. Turn it to "on".

-Former PS-LX250H owner

Dec 12, 2008 | Sony PS-LX250H Turntable

1 Answer

PS-T3 connection to Sherwood 4105 Receiver


You need a phono stage (phono amp) between the turntable and receiver to boost the lower signal from the turntable. If your receiver has phono inputs, use those as there will be a built-in phono stage.

Oct 14, 2008 | Kenwood KD-291RC Turntable

1 Answer

Phono stage


Hi. The phono input of your STRBD930 has a pre amplifier on it, and as such should only be connected to a dynamic phono cartridge. This is one which has a moving coil or magnet, as opposed to a piezzo cartridge. Connecting a piezzo turn table to the phono input will provide a too-higher voltage input for the pre amp, which might damage the pre amp. I hope this helps. PS moving magnet and moving coil are same difference. These are both dynamic cartridges, and can be connected to STRDB930.

Jul 07, 2008 | Sony STR-DB930 Receiver

1 Answer

SONY TURNTABLE PSLX22


You have to make sure your unit is connected to the PHONO INPUT connection on your receiver. If your receiver does not have a PHONO INPUT connection, then you will need to buy what's called a PHONO PRE-AMP - AVAILABLE HERE.

You connect the turntable to the Phono Pre-Amp, then you connect the Pre-Amp to the LINE IN or AUX IN of your receiver.

- Davis.
DIGITAL ANALOG THERAPY
www.repairnyc.com



Jul 05, 2008 | Sony PS-LX250H Turntable

2 Answers

Not a good sound


you can't...the technics need to be pluged into phono..because the signal has to be amplified for it to play...phono channels on amps and dj mixers have an amp built in....

Apr 06, 2008 | Technics SL-1200MK2 Turntable

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