NAD 3020A -info and reapir thread>

[ZuMbAiU]

Hi guys.From today I have one beautiful NAD 3020A amp in very miserable condition like this ,but very grubby:

And this is the maunal!
The amp may be not work ,but I want restore this classic monster.
I can`t speak now for the damage-may be this evening or when I can test him.
Will be great If any can speak for the quality of this amp,because I don`t know any for NAD and for the coming work on him.
Thank`s

 

[pinkmouse]

25 odd years ago, I loved my 3020...

I'll be interested to see pics of yours when you get it home.

 

[ZuMbAiU]

Thanks for the fast reply pinkmouse.And I want see pictures of your NAD with many pixels ,because my 3020 isn`t with the original front panel.I want make a new fornt panel like the original.My 3020 is damaged but i want repair him.I have a good cabinets for test him

 

[ZuMbAiU]

Hi again pinkmouse!
The 2SC1400 are dead and the big capacitors ,and many thinks....
Can you help me with any schematcis"
This is my mail:
ogibad@abv.bg
The PS is OK,but the LED indicator is made in Bulgaria.I need any schematics of this insicator and any PCB.This amp is very very dead for the moment

 

[sreten]

http://www.tcaas.btinternet.co.uk/index-4.htm

for schematics.

/sreten.

 

[pinkmouse]

Unfortunately I gave mine away to a deserving friend about 10 years ago, but I can help you with schematics, they are on this website.

 

[ZuMbAiU]

I have this http://www.tcaas.btinternet.co.uk/index-4.htm bad quality gif`s!
I want any with the biggest quality for this amp.If you can photo your amp and the led indication will be great!
I want any any better quality that the gif`s ,because in the gif`s I can`t view the big transistors and capacitors! and the front panel

 

[B Cullingford]

I might be able to help you with a picture, you want the front panel?

I'm sitting a few feet away from a 3020 - just using as a preamp but when I finally build that preamp that I've designed maybe I'll fix the power amps.

Bill

 

[ZuMbAiU]

I want a good picture of the front panel+ any dimensions of this panel +any discription of the LED indicator and any schematics,because the LED indicator of my NAD is made in Bulgaria(not the original indicator).
I want restore this classical amp I want make a new LED indicator like the original indicator and new front panel

 

[pinkmouse]

Did the schematics I linked to above not help?

 

[ZuMbAiU]

Yes ,but I can`t find the LED indicator in the schematics from your link.

 

[Geoff]

Yes ,but I can`t find the LED indicator in the schematics from your link.

I deliberately omitted the LED display from the schematics I posted on my website because the circuit in the service manual did not agree with the pcb within the 2030.

Email me and I will send you a scan of the relevant part of the schematic. If you also enclose your address I will send you an original NAD LED board (fully populated). I don't know if it still works as it has been in my parts drawer for many years.

 

[ZuMbAiU]

Thanks for the LED indication Geoff.
This is my NAD:

 

[ZuMbAiU]

The back-side:

 

[ZuMbAiU]

The Big 2N3055:

 

[ZuMbAiU]

The Front Panel:

 

[ZuMbAiU]

And the case:
May be the condition of my NAD isn`t very great,this is only tragic irony

 

[Tube_Dude]

May be the condition of my NAD isn`t very great,this is only tragic irony

Where is has been...in a flood?

 

[ZuMbAiU]

I don`t know ,but the price for this "beautiful" 3020A is 100 euro for the moment.Now I have amp with the whole PCB,new Toshiba 2N`s.
Now I plan to change all resistors with metal-film + all capacitors ant potentiometers.May be this is very good idea for the moment.
I wait for the new wooden black frond panel

 

[Tube_Dude]

The white capacitor that is upwards , near the right output transistor , don't look original...