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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

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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

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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

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1 Answer

On a Technic SU 610 amp, it makes a crackling noise when turning the volume pot up, if done slowly its not as bad but still makes a noise?


If it ocours only when turning your volume pot then the pot is worn or dirty inside. I f you are handy get a new pot that is EXACTLY the same and replace it It is simple if you can solder as there is usually only tree connections

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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

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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

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Hi, I have a second hand NAD 3240PE amplifier, the right channel has an intermitent crackle but the left channel is fine, Any ideas as to what might be causing this problem?


Crackling is usually a dirty control. Try using an electronics cleaner (with lubricant) and spray out all of the controls and switches. With the unit off, work the controls and switches back and forth to "spread" the lubricant. I would spray, work and spray again.

Update this with the results and also see if the crackling is related to the overall volume level. If tied to the volume level, there could be a transistor inside that is breaking down and causing distortion.

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Dec 28, 2009 | NAD Amplifiers & Preamps

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.

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Aug 18, 2009 | NAD Amplifiers & Preamps

1 Answer

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Jul 26, 2009 | Amplifiers & Preamps

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 Amplifiers & Preamps

2 Answers

Crackling power switch on NAD 3220PE


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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 | Amplifiers & Preamps

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 | Amplifiers & Preamps

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