NAD 2200 circuit?transformer?

pmharries · 11th October 2005, 02:43 PM

Hi I have a old nad 2200 power amp not switched on for 15 years and guess what transformer blown because of dry capacitors.Does anyone have cct diagram or even better a transformer regards phil

thermionic · 25th July 2007, 07:14 PM

Hi,

Sorry for bumping an old thread, but does anyone here know where I can obtain a schematic for the NAD 2200?

I've found a couple of places online that claim to have a copy, but I'm weary of paying for schematics as I've been ripped off by these firms before (a block diagram - not a full schematic!).

The amp turns on for a minute or two, with one channel 6dB lower than the other, whereupon the protection relays kick in. The amp then goes into a cycle with the relays muting and unmuting the output. I haven't been able to read any discernable DC on the outputs. Nothing looks damaged inside.

I wonder if the 6dB drop is due a fault with the "Power Envelope" function, that supposedly allows 6dB of headroom for transients?

These amps are a new one to me, so you'll have to excuse my lack of knowledge.

Thanks in advance.

Justin

tvi · 25th July 2007, 08:14 PM

I have a partial service manual including the schematic, its about 5 meg. If youy email will hold it I can send.

Regards
James

thermionic · 25th July 2007, 09:31 PM

Thanks, James.

BTW - It's a standard 2200, not a "PE" model.

You have incoming mail.

Justin

tvi · 25th July 2007, 10:47 PM

Sorry to say it's the PE version I have

al2002 · 25th July 2007, 11:30 PM

Quote:

Originally posted by tvi
Sorry to say it's the PE version I have

What is the difference between the standard and PE models?

timbert · 7th August 2007, 06:04 AM

I heard once there was no difference. I have the non-PE badged version, for the past 20 years, and have never run across anyone who held there was a difference. My speaker relays are gonig bad for the third time...gimme an email address and I will send you the manual I have.

computerwala · 3rd March 2009, 05:41 PM

Hi Folks, I am looking for schematics for a NAD 214 / 216 and NAD 2200 power amplifiers. I have both and would like to refresh their components. The 216 recently developed a clipping issue and if I have the schematic, I could analyse the issue. If someone has the service manual for these beasts, that would be excellent. Regards, Hamad

AKN · 3rd March 2009, 06:14 PM

Hi,

Look here for schematics and service manuals.

11th October 2005, 02:43 PM	#1
pmharries diyAudio Member Join Date: Oct 2005	NAD 2200 circuit?transformer? Hi I have a old nad 2200 power amp not switched on for 15 years and guess what transformer blown because of dry capacitors.Does anyone have cct diagram or even better a transformer regards phil

25th July 2007, 08:14 PM	#3
tvi diyAudio Member Join Date: Apr 2001 Location: Moonee Ponds, Vic, Australia	I have a partial service manual including the schematic, its about 5 meg. If youy email will hold it I can send. Regards James __________________ The border between the Real and the unreal is not fixed, but just marks the last place where rival gangs of shamans fought each other to a standstill. Robert Anton Wilson

25th July 2007, 10:47 PM	#5
tvi diyAudio Member Join Date: Apr 2001 Location: Moonee Ponds, Vic, Australia	Sorry to say it's the PE version I have __________________ The border between the Real and the unreal is not fixed, but just marks the last place where rival gangs of shamans fought each other to a standstill. Robert Anton Wilson

3rd March 2009, 05:41 PM	#8
computerwala diyAudio Member Join Date: Oct 2008 Location: Chicago	NAD 2200 Schematic Hi Folks, I am looking for schematics for a NAD 214 / 216 and NAD 2200 power amplifiers. I have both and would like to refresh their components. The 216 recently developed a clipping issue and if I have the schematic, I could analyse the issue. If someone has the service manual for these beasts, that would be excellent. Regards, Hamad

3rd March 2009, 06:14 PM	#9
AKN Enjoy good sound diyAudio Member Join Date: Aug 2005 Location: In the middle of Sweden	Hi, Look here for schematics and service manuals. __________________ / Anders


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25th July 2007, 07:14 PM	#2
thermionic diyAudio Member Join Date: Jan 2004 Location: UK	Hi, Sorry for bumping an old thread, but does anyone here know where I can obtain a schematic for the NAD 2200? I've found a couple of places online that claim to have a copy, but I'm weary of paying for schematics as I've been ripped off by these firms before (a block diagram - not a full schematic!). The amp turns on for a minute or two, with one channel 6dB lower than the other, whereupon the protection relays kick in. The amp then goes into a cycle with the relays muting and unmuting the output. I haven't been able to read any discernable DC on the outputs. Nothing looks damaged inside. I wonder if the 6dB drop is due a fault with the "Power Envelope" function, that supposedly allows 6dB of headroom for transients? These amps are a new one to me, so you'll have to excuse my lack of knowledge. Thanks in advance. Justin

25th July 2007, 09:31 PM	#4
thermionic diyAudio Member Join Date: Jan 2004 Location: UK	Thanks, James. BTW - It's a standard 2200, not a "PE" model. You have incoming mail. Justin

7th August 2007, 06:04 AM	#7
timbert diyAudio Member Join Date: Jul 2007	I heard once there was no difference. I have the non-PE badged version, for the past 20 years, and have never run across anyone who held there was a difference. My speaker relays are gonig bad for the third time...gimme an email address and I will send you the manual I have.

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