Question about Sony PS-LX350H Turntable

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Hum when turntable connected to phono sockets on amp

Amp has a gnd connection no lead from turntable to connect it to

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This turntable absolutely came with a ground wire that must connect to the gnd connection on the amp. maybe it got torn off or something but there should be clues on the back of the turntable as to what happened to it.

once the lead is found it must be connected to the amp gnd connect to get rid of the hum. this might require someone with soldering skilz or what have you in order rig up a new wire.

a tech might have to remove the bottom and solder in a new wire if it is cut or ripped off at the housing. This is common as people forget to unhook the gnd wire from the amp when moving things around.

Posted on Feb 11, 2009

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I get an intermittent loud hum using NAD AV316 amplifier, with stereo speakers(B connection) with phono input from Dual 606 turntable. Hum increases/changes when tone arm on turntable is touched.


The hum of course is the 60 cycle line AC voltage. Make sure that the routing of the AC power plug is as distant as possible from the stereo RCA cables.

The most likely problem is the connection of the phono cartridge to the wires in the arm. These connections usually are silver plated and become oxidized creating a bad connection. Remove the cartridge and using a fine eraser polish the connections. There is a ground connection that makes the five wire connection. Be super carfull these terminals are very easy to break

The phono connections to the stereo is very low voltage subject to interference. The connection to the magnetic pickup at the tone arm is low impedance and is inductive. Any poor connection between the cartridge up to the AV316 will produce this hum. Continue to check connections and swap cables with a known good to resolve.

I have switched the left and right cables to ensure that the cable is not the problem.

Hope this helps?

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Sep 26, 2016 | NAD Audio Players & Recorders

1 Answer

The volume on technics SL-BD22 turntable will not turn up and stays at one volume


Since the turntable itself doesn't have a volume control the problem is with the amp it is connected to. It should be connected to an amp with a dedicated phono socket. It's no use connecting it to a tape or aux or CD socket. These sockets do not have a built in pre-amp for the magnetic cartridge. If your amp doesn't have a dedicated phono socket then you can buy a Magnetic Cartridge Pre-amp that will plug into a tape socket etc on the amp and have the deck plugged into it. If plugged into a none dedicated socket though you can hear it, the volume will be very low compared to other sources. If you have got it plugged into a dedicated phono socket and the volume is still low, then the internal built pre-amp inside your amp for the deck has failed and will need to be repaired. The pre-amp failure will not effect any other functions of the amp.

Feb 24, 2015 | Technics SL-BD22 Turntable

1 Answer

How to connect dav-hdx 900 to turntable


Firstly, your turntable will need a phono pre-amp. This can either be built in or an external box.

Connect the pre-amp phono out to the DAVHDX900 Sat.Cable 'R audio in L' sockets.

Aug 23, 2014 | Audio Players & Recorders

2 Answers

Hi there, i just bought 2 Technics mkii


well" for a start, they need to go into a phono socket, this amplifies them.
i take it you bought 2 decks with the intentions of mixing, so you gonna need a mixer.
MIXER & DECKS SET UP:
1.decks into phono channels 1&2
2. black GROUND wires, go to GND screw on back of mixer
3. RCA master / booth Outputs on mixer to AUX / LINE-IN on amp.(not phono)

Oct 09, 2013 | Technics SL-1210 Turntable

1 Answer

I've been given a Technics sl-bd22d turntable, an Arcam amplifier and a Cambridge 551P pre amplifier. How do I connect them all together?


Depends what type of sockets these have. If the Pre-Amp has a RCA phono sockets you just need some RCA leads. I don't know if the Arcam Amp works with any pre-amp. But if it does, it's likely to have the same type sockets as the others. So you just buy another two RCA leads and connect it up.

Apr 19, 2013 | Audio Players & Recorders

2 Answers

Where do I connect the ground wire from my amp to Numark TT USB?


i used to have stanton t80s,had the same problem no gnd on deck but diddnt need it there waqs no bad earth so if it sounds good leave it

Jul 18, 2009 | Numark ttUSB Turntable

1 Answer

Tt1520 with broken back phono socket


http://s130.photobucket.com/albums/p278/tattie_boi/?action=view&current=eBayISAPI.jpg

Like this?

How do you plan on reattaching the wires?

Mar 20, 2009 | Numark TT1520 Turntable

3 Answers

Technics SL-BD22 ground wire does not reduce hum. Any solutions?


presuming it has "some" effect, then gnd wire itself it good. Even though there may be a gnd thumbscrew on the preamp try slipping the ground wire under a screw on the main amp or receiver that screws into metal and make sure the gnd wire is touching metal under the screw.

if that didn't help, then you may have:
>a cartridge with an open gnd internally.
>an open gnd wire from the back of the cartridge to the outer shields of the RCA connectors.
>or your neutral & hot wires of your house wiring might be reversed causing something weird.
>a low quality preamp. (it should have a seperate wall adaptor so that only low voltage dc goes near the preamp)
good luck ground issues can be tough!

Feb 06, 2009 | Technics SL-BD22 Turntable

1 Answer

Humm


where is the ground wire from the turntable connected to ? Ensure that is is connected to the phono pre-amp's ground.

Is the turntable sitting on top/near any other equipment ? Try changing the position and see if the hum reduces. If yes, then it is likely that it is picking up hum from a mains transformer.

Aug 21, 2008 | Aiwa PX-E860 Turntable

1 Answer

Background huming


How does it sound when you just play straight vinyl through your system? If you still get that hum, issue might also be faulty RCA cables, and even cartridge. So you would need to test everything out.

You don't really need a pre-amp unless you are connecting straight into your pc from your turntable. In that case, yes you will need a pre-amp, and this actually might be the cause of everything. If you are going into a DJ Mixer or a receiver, and your turntable is connected to the PHONO INPUT connection, you do not need a phono pre-amp.

Here are some inexpensive PHONO PRE-AMPS.

Hope this helps some.

- TWEAK AV LAB

Nov 25, 2007 | Audio Technica AT-PL50 Turntable

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