Question about Audio Players & Recorders

2 Answers

NAD spare parts

Hi I think the volume pot on my amp is faulty (lots of crackle when I turn it up or down, but not always in the same spot on the pot or all the time, prehaps it's something else??)

Where can I get a spare one?

Thanks

Steve I have a NAD 3020and the carbon granule volume POT has a couple of noisy/dead spots. Where can I get a replacement Thanks Geoff

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,175 Answers

Rotating the pot a couple hundred times MIGHT work but might also grind in the debris on the pot.

The best thing is to unplug the unit,take the cover off , locate the pot and see if there's enough open space on the pot itself to spray contact cleaned into it.

I recommend any of the De-Oxit brand contact cleaner.( Not a paid consultant)
Radio shack even carries it.

Flush the pot with a couple sprays of De-oxit and rotate a couple dozen times

Posted on Dec 29, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Hi....sounds like dirt or pitting on the carbon tracks in the pot.

The cheap solution is to USE it....often the carbon /graphite tracks will re-whet when rubbed by the wiper in the pot and hey it's ok until next year ....BUT............I mean do this....

Turn off the power and rotate the volume knob appx 100-200 times back and forth...........power up and check.
Use low continuous frequencies (synth music?) if possible as the lower the frequency is, the nearer it is to dc. and really exposes these faults easily.

Or spray WD40 (fix all graphite spray) into the pot while rotating.

OR get a genuine spare....off the..net I guess

OR get an equivalent from your LHS BTw............it is a good amp..........had one myself.......IT shook the Hi-Fi world by its' simplicity price and zero BS""t..........I knew the designer thru Dolby London where i was working ..top man.

Cheers
Nik

Posted on Nov 22, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I am having a problem with the k1 one of the channels crackles a lot when i turn it up and does not always go on. i have to push on the nob to get to come on and does not always stay on a lot of crackling...


Hi, You have in days gone by what were called dirty pots ( short for potentiometers or variable resistor ) that's the name of the actual component for the volume control. It is a pretty easy repair actually, it just involves taking the cover off the stereo ( always do this with the unit unplugged ) then you will see where the volume knob enters the case-there will be a metal round device connected to it, that is your volume control ( pot ) There could be more than one, in a stacked configuration, so when you find that-use some " electronic contact cleaner " CRC is a popular brand-or even WD-40 will work ( although it may unduly attract dust in the future ) spray into the gap nearest where the wires are soldered to it-then quickly turn knob all the way up then down several times to be sure to push any un-washed away debri to the ends of the volume range. That will do it I'm 99.9 percent sure, thank you for asking FixYa, write back and let me know how the Crown sounds then. Good luck Prodzilla

Apr 21, 2011 | Crown K1 Amplifier

1 Answer

I have a old NAD 1300 pre amp. I need to replace the volume rheostat where can i buy the part?


Hi, for the price of servisol you may as well buy a brand new pot. The nad uses a dual carbon pot. Any electronics shop should have one.
Is it a pcb mounted type or one with loot solder tags?
A couple of quid, but if you want to upgrade, then spend around a tenner and get an alps conductive plastic pot.
Try this:-
http://www.rapidonline.com/sku/Electronic-Components/Resistors-Potentiometer/Control-Potentiometers/Professional-audio-potentiometer/65228/66-0225
OR:-
http://www.maplin.co.uk/Module.aspx?moduleno=2207

Have a look on ebay, there should be loads.

Just found this mod.
http://www.diyaudio.com/forums/attachments/solid-state/69062-replacing-nad-1300-volume-balance-pot-nadmods.jpg

If you need more help, give us a shout and i'll try harder :)

Regards - Anthony

Feb 11, 2010 | NAD C320 2-Channel Amplifier

1 Answer

Very loud hummimg and crackling - even when volume turned down.


There are a few variants for this model depending upon the serial number. From your description, there are some capacitors in between the amp stages called coupling caps that are failing. The hum is some DC current being passed through the output stage. The crackling is probably just dirty controls.

Dan

Aug 18, 2009 | NAD Audio Players & Recorders

1 Answer

NAD 3020a crackle in right channel regardless of volume.


more than likely you have a bad transisitor on that side and the frequincey is distorted there's not much you can do except take it back if it's new or take it apart and check for the bad part but if you do that you had better know what your doing!! it may be just 12 volts but thru an amp it's a nasty shock

Jul 26, 2009 | Audio Players & Recorders

1 Answer

Technics su-v560 stereo amp crackling


That is a common symptom of not properly grounding of negative side of the output of power amplifier section.Just resolder all component parts joint in power amp.sectiton and double the solder all negative ground.Also clean the pots of all volume controls and selector with a lighter fluid or desame that fluid so whatever sound or crackling noise eliminated and works normal again.. Hope it may help you;;

Jun 08, 2009 | Technics Audio Players & Recorders

1 Answer

My Stereo integrated hi fi amp is giving a crackle when output from certain devices - like a build up of static at intervals. It is quite old NAD amp - is this a sign of transistor failure, is it worth...


This sounds like you may have a lot of solder connections on the amp board and the power supply board to be resoldered. After a few years of using the unit they can get heat stressed and develop cracks in them. The sooner you get this fixed the better. NAD is a very good brand of stereo and in most cases they are well worth getting fixed. If the stereo is used for too long it can develope some component break downs that would cost much more money to repair.

Sometimes the static or crackle sound is just the volume control or other controls like the balance or teble or bass controls that just need to be cleaned with the proper type of electronic contact cleaner.

I hope this helps, have a nice holiday season,

Dave

Dec 13, 2008 | Audio Players & Recorders

1 Answer

I Have an NAD 710 receiver, it crackled then volume went a little lower and when turned up begins to distort with no grunt, no longer crackles but the lower volume problem remains


YOU SOUND VERY KNOWLEDGEABLE IN THIS FIELD,BUT ITS BEEN MY EXPERIENCE IN THE PAST TO START SIMPLE(@ MAYBE YOU HAVE)SOUNDS LIKE THE SAME PROBLEM MY MARANTZ HAD ,IT WAS A SIMPLE MATTER OF TAKING CONTACT CLEANER TO THE POT'S & SWITCHES.(TRY SPRAYING IT DOWN THE SHAFTS;SWITCHES ,ECT....)MY MAIN PROBLEM WAS WITH THE A-B-C SPEAKER SWITCH,MUTE & VOLUME.AFTER WORKING THEM,THE PROBLEM CLEARED UP.DUST & BUILDUP(ALOT OF TIMES FROM MINIMAL USE OR STORAGE)CONTRIBUTE TO THIS PROBLEM;ASWELL AS CORROSION OF THE CONTACTS & COILS.GIVE THIS A TRY & SEE IF IT DON'T HELP.BEST REGARDS TO YOU ALSO;HOPE THIS HELPS.THAXNX FOR USING FIX-YA(PLEASE RATE)

Nov 08, 2008 | NAD Audio Players & Recorders

2 Answers

Crackling power switch on NAD 3220PE


Hi, i would try flooding trhe switch with CRC 2-26 for a start. Itr may recover some contact integrity. A jerry rig solution would be to bridge the switch contacts and leave it on all the time(i leave my amps running all the time) or if as in Australia you have a switch on the wall socket use that,


OR purchase a new switch from here. Not sure how you would go through NAD, probably dont have any in stock as a spare these days.

or if that does not work out, I could get one to you through ebay. Used to be quite a common TV switch, but I also remember replacing then in Nad amps, many moons ago ;) I think I still have a one in stock myself, packed away from when I was a NAD service agent:)

regards
robotek

Nov 04, 2008 | Audio Players & Recorders

2 Answers

NAD spare parts


Hi Steve,

Sometimes this soret of problem can be caused by a leaky coupling capacitor between stages. Check for a varying DC offset on the wiper pin of the vol control. A scope is best for seeing this, but a multimeter may also show you the problem, just compare one channel to the other to determine if there is actually a problem or not. Before replacement, try flooding the internals of the pot with CRC2-26 first. You can often resolve these issues in this manner. If it is a hermetically sealed type(ALPS), you may have to drill a small hole(I use a pin vice and a 1mm drill bit) to get access to the internals. Is always worth a try before replacement is done, and I have only had to actually replace a few Vol controls over the years as most are recoverable. Hope this helps. Any dramas dont hesitate to get back to me. A FixYa rating is a good reward for this tip to repair the unit. Cheers

regards
Robotek

Sep 17, 2008 | NAD C320 2-Channel Amplifier

1 Answer

Gain on one channel stuck at max


Hi there

Check for a dry solder joint on one end of the vol control(earthy end). This will be causing your problem. The pot itself may actually be faulty to. You can always get stuff like that, just got to identify it. Check soldering to the pot first.

best regards
Graeme

Mar 24, 2008 | Audio Players & Recorders

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

862 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts

kakima

Level 3 Expert

101406 Answers

 Grubhead
Grubhead

Level 3 Expert

4751 Answers

The Knight
The Knight

Level 3 Expert

71608 Answers

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

Answer questions

Manuals & User Guides

Loading...