NAD 3020/7020 sound drop-out

bardsleyh · 25th May 2004, 10:29 AM

I have recently moved on from my NAD3020 but my friend still has a 7020 with the same long-running fault as me - sound drop-out at low volumes. I used to think it was a speaker problem as fiddling with the speaker-wire grips often cured it temporarily, but both of us have found that also fiddling with the amp's phono output also does the same. It is a very annoying problem. Is this a known fault with this amp, as it seems more than coincidence that we both have had it?

cpemma · 25th May 2004, 10:56 PM

After all these years, general oxidation of the phono and speaker contacts may be giving poor contacts, they're very basic (cheap). I had to re-solder one phono where the joint had cracked, so that's something to check.

A good clean of the switches and pots may also help.

jleaman · 26th May 2004, 12:23 AM

I have had 3 or 4 of these nad amp's there great little amp's.. i would get the speaker out puts connectors and the input connectors RCA's re soldered.. also maybe put some volume cleaner in the volume pot.. that might be the problem.. Also these pots that are used are pretty cheap you might have to replace it.. come to think about it.. try this also..

turn the amp off.. then take the volume control and turn it to the left full then to the right full do that about 20 times and then re try your audio see how that goes.. might just be a dirty contact on the control..

Let us know..

Jason.

25th May 2004, 10:29 AM	#1
bardsleyh diyAudio Member Join Date: May 2004 Location: East Sussex, England	NAD 3020/7020 sound drop-out I have recently moved on from my NAD3020 but my friend still has a 7020 with the same long-running fault as me - sound drop-out at low volumes. I used to think it was a speaker problem as fiddling with the speaker-wire grips often cured it temporarily, but both of us have found that also fiddling with the amp's phono output also does the same. It is a very annoying problem. Is this a known fault with this amp, as it seems more than coincidence that we both have had it?

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25th May 2004, 10:56 PM	#2
cpemma diyAudio Member Join Date: Jul 2003 Location: S Yorkshire OK	After all these years, general oxidation of the phono and speaker contacts may be giving poor contacts, they're very basic (cheap). I had to re-solder one phono where the joint had cracked, so that's something to check. A good clean of the switches and pots may also help.

26th May 2004, 12:23 AM	#3
jleaman Banned Join Date: Apr 2002	I have had 3 or 4 of these nad amp's there great little amp's.. i would get the speaker out puts connectors and the input connectors RCA's re soldered.. also maybe put some volume cleaner in the volume pot.. that might be the problem.. Also these pots that are used are pretty cheap you might have to replace it.. come to think about it.. try this also.. turn the amp off.. then take the volume control and turn it to the left full then to the right full do that about 20 times and then re try your audio see how that goes.. might just be a dirty contact on the control.. Let us know.. Jason.

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