NAD 304 schematic wanted - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 7th October 2004, 01:00 PM   #1
diyAudio Member
 
Join Date: Oct 2004
Default NAD 304 schematic wanted

NAD 304 schematic ???

I did search this site for the diagram but all the links were dead.

please mail to.....
stayforthedayandgo@yahoo.com


After the amp warms up one channel becomes distorted, I should be able trace it through if I had the schematic.
Thanks.

Dave
  Reply With Quote
Old 10th October 2004, 08:26 PM   #2
diyAudio Member
 
Join Date: Oct 2004
If there is no schematic .. where should I start to look ?

After the amp warms up one channel starts to break up very badly, while the other channel suffers the same fault but only very slighty.

I have not yet opened this amp up to look about as without a diagram I would be lost.

Any suggestions would be appreciated.
  Reply With Quote
Old 10th October 2004, 10:48 PM   #3
PMik is offline PMik  United States
diyAudio Member
 
PMik's Avatar
 
Join Date: Mar 2004
Location: Fort Lauderdale, FL
NAD304 Zip-file in your mail

Cheers
__________________
Mod is fun
  Reply With Quote
Old 11th October 2004, 12:25 PM   #4
hjelm is offline hjelm  Sweden
diyAudio Member
 
hjelm's Avatar
 
Join Date: Nov 2003
Location: Västerås
I think the NAD's are riddled with elcaps, especially the line amp part. Check for dried out ones.
__________________
Hjelm
  Reply With Quote
Old 13th October 2004, 08:34 PM   #5
diyAudio Member
 
Join Date: Aug 2004
Location: Celje,Slovenija
PMik:can you send it to me too,please?

kolovodza@gmail.com

tnx...
  Reply With Quote
Old 14th October 2004, 02:54 AM   #6
gar is offline gar  Philippines
diyAudio Member
 
Join Date: Oct 2004
Default NAD304 Zip

PMik, please send NAD304 Zip here as well - TIA!
gwickes@skyinet.net
  Reply With Quote
Old 14th October 2004, 11:16 AM   #7
Mrpong is offline Mrpong  Thailand
diyAudio Member
 
Join Date: Aug 2004
Location: Bangkok
Default Me too

Hello

Could you please send to me?
gkoapong1@yahoo.com

Thank you in advance
  Reply With Quote
Old 29th October 2004, 03:33 PM   #8
danka is offline danka  Russian Federation
diyAudio Member
 
Join Date: Oct 2004
Send a message via ICQ to danka
Default And me too

Hello

I also need NAD304 schematic to repaire burned power transformer of my father's amplifier (My younger brother had listened to rock music extremely loud). Could you send it to dnaishul@yandex.ru

Thank you, Daniel
  Reply With Quote
Old 29th October 2004, 08:13 PM   #9
PMik is offline PMik  United States
diyAudio Member
 
PMik's Avatar
 
Join Date: Mar 2004
Location: Fort Lauderdale, FL
Daniel

You got mail
__________________
Mod is fun
  Reply With Quote
Old 29th October 2004, 09:37 PM   #10
diyAudio Member
 
Join Date: Aug 2004
Location: Halifax N.S
hmm i got one of these too...so if anyone's throwing schematics around,i would be very greatful to get one as well...

i had some problems with mine as well,and i don't know if this would be the same or even related...mine just wouldn't turn on and got stuck in protection mode...anyway in addition to any other problems anyone's having... you want to double check the values and integrity of these components

preamp section- R917/R918 these are 180 ohm and should be changed to 1 watt if they installed 1/2 watt..check to make sure they work and aren't cooked if you have 1/2 watt's installed![some apparently do]

main Amp - R333/R334 are the same deal..47k 1/2 watt and should be 1 watt..these suckers get HOT,hot enough to discolor the PCB..these cause the "protection fault" when they let go and tend to drift up to very high values before...DEFINATELY check em and replace if necessary...from what i can gather this was a VERY common failure with this model..when blown the amp becomes completely non functional,but the fix is easy...just replace em,their failure doesn't appear to do any other damage
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wanted Mordaunt-short MSW20 Schematic Wanted simon dart Subwoofers 0 22nd May 2009 08:19 AM
schematic wanted cammy666 Tubes / Valves 3 20th June 2007 01:11 AM
Schematic Wanted mullins Solid State 2 26th October 2003 02:26 PM


New To Site? Need Help?

All times are GMT. The time now is 11:09 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2