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NAD 3020 recap
NAD 3020 recap
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Old 9th April 2018, 08:47 AM   #11
avtech23 is offline avtech23  Australia
WAF. The most critical value in any audio project!
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NAD 3020 recap
Sounds like a great result!

I just recapped an (auction site) special NAD 3225pe as a side project and am pretty pleased with the results. Just under 50 electrolytic capacitors to change out in total I think it was.

I didn't tinker with the values at all, apart from substituting the 0.68uf 50v for some 0.47uf at the low pass filter network (availability issues).

$25 for genuine, reasonable quality caps (nothing too flash needed for my intended use) and under 2 hour labour total to complete was pretty worth it. I too had a bit of hum but she's pretty clean now!

Hunting for some speakers to match this one now...
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Old 9th April 2018, 09:13 PM   #12
suzyj is offline suzyj  Australia
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That looks really nice. I keep an eye on auctions for gear that's broken, but usually the price of postage to outer woop-woop where I live is more than what they want for the gear, which makes it somewhat difficult.
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Old 10th April 2018, 12:27 AM   #13
suzyj is offline suzyj  Australia
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My cat approves of the newly hum-free 3020B. He's looking forward to the arrival of new belts, pinch roller and transformer for my 6325 so he can play his Mondo Rock and Cure cassettes.

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Old 10th April 2018, 10:30 AM   #14
avtech23 is offline avtech23  Australia
WAF. The most critical value in any audio project!
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NAD 3020 recap
Quote:
the price of postage to outer woop-woop where I live is more than what they want for the gear
Even in 'the big smoke', some places still try to charge me as 'regional freight'. But every now and then a decent bargain appears :-)

Quote:
My cat approves of the newly hum-free 3020B.
He looks very content!

Looks like a great setup you have there.
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Old 14th September 2018, 12:09 PM   #15
howarthcd is offline howarthcd  United Kingdom
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I've created a shared Mouser project which contains replacements for all of the electrolytic caps in a NAD 3020B with 2 x 4700uF PSU caps:

Mouser Electronics, Inc. United Kingdom

The caps are all Nichicon HT and VZ series other than those around the bass control which are Wima MKS2 due to the unavailability of 0.68uF electrolytics.

My intention of posting here is that it could save time for anyone looking to undertake a re-cap of this amp.

The list below can be copied and pasted into a .csv file for opening in Excel.

Hope this is of use to someone.

Cheers
Chris



Symbol,Value,Voltage,Manufacturer,Manf. Part Number,Notes
C401,4.7uF,50V,Nichicon,UKT1H4R7MDD,
C402,4.7uF,50V,Nichicon,UKT1H4R7MDD,
C407,2200uF,6.3V,Nichicon,UKT0J222MPD,
C408,2200uF,6.3V,Nichicon,UKT0J222MPD,
C409,33uF,25V,Nichicon,UKT1E330MDD,
C410,33uF,25V,Nichicon,UKT1E330MDD,
C417,47uF,25V,Nichicon,UKT1E470MDD,
C418,47uF,25V,Nichicon,UKT1E470MDD,
C421,10uF,16V,Nichicon,UKT1C100MDD,
C422,10uF,16V,Nichicon,UKT1C100MDD,
C423,220uF,10V,Nichicon,UKT1A221MED,
C424,220uF,10V,Nichicon,UKT1A221MED,
C513,47uF,10V,Nichicon,UKT1A470MDD,
C514,47uF,10V,Nichicon,UKT1A470MDD,
C517,47uF,25V,Nichicon,UKT1E470MDD,
C518,47uF,25V,Nichicon,UKT1E470MDD,
C519,100uF,10V,Nichicon,UKT1A101MDD,
C520,100uF,10V,Nichicon,UKT1A101MDD,
C525,47uF,10V,Nichicon,UKT1A470MDD,Not listed in service manual.
C526,47uF,10V,Nichicon,UKT1A470MDD,Not listed in service manual.
C529,0.68uF,50V,Wima,MKS2.68/50/10,Value not available as electrolytic. Not listed in service manual.
C530,0.68uF,50V,Wima,MKS2.68/50/10,Value not available as electrolytic. Not listed in service manual.
C531,47uF,100V,Nichicon,UVZ2A470MPD,Value and voltage combination not available in KT series. Service manual states 4.7uF but 47uF fitted.
C532,4.7uF,50V,Nichicon,UVZ1H4R7MDD,Value and voltage combination not available in KT series.
C533,47uF,50V,Nichicon,UKT1H470MED,
C601,1uF,50V,Nichicon,UKT1H010MDD,
C602,1uF,50V,Nichicon,UKT1H010MDD,
C603,1uF,50V,Nichicon,UKT1H010MDD,
C604,1uF,50V,Nichicon,UKT1H010MDD,
C613,47uF,10V,Nichicon,UKT1A470MDD,
C614,47uF,10V,Nichicon,UKT1A470MDD,
C621,1000uF,10V,Nichicon,UKT1A102MPD,
C622,1000uF,10V,Nichicon,UKT1A102MPD,
C625,47uF,25V,Nichicon,UKT1E470MDD,
C626,47uF,25V,Nichicon,UKT1E470MDD,
C701,22uF,10V,Nichicon,UKT1A220MDD,
C702,22uF,10V,Nichicon,UKT1A220MDD,
C703,22uF,10V,Nichicon,UKT1A220MDD,
C704,22uF,10V,Nichicon,UKT1A220MDD,
C803,4.7uF,50V,Nichicon,UVZ1H4R7MDD,Value and voltage combination not available in KT series. Not in audio path. Not listed in service manual.
C805,1uF,50V,Nichicon,UKT1H010MDD,Not listed in service manual.
C901,4700uF,50V,Nichicon,UVZ1H472MRD,Value and voltage combination not available in KT series
C902,4700uF,50V,Nichicon,UVZ1H472MRD,Value and voltage combination not available in KT series
C905,330uF,50V,Nichicon,UKT1H331MPD,
C906,330uF,50V,Nichicon,UKT1H331MPD,
C907,47uF,50V,Nichicon,UKT1H470MED,
C908,47uF,50V,Nichicon,UKT1H470MED,
C911,4.7uF,50V,Nichicon,UKT1H470MED,
C912,4.7uF,50V,Nichicon,UKT1H470MED,
C914,47uF,35V,Nichicon,UKT1V470MDD,
C915,47uF,35V,Nichicon,UKT1V470MDD,
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