NAD 304 schematic wanted

[Man_in_UK]

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

[Man_in_UK]

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.

[PMik]

NAD304 Zip-file in your mail

Cheers

[hjelm]

I think the NAD's are riddled with elcaps, especially the line amp part. Check for dried out ones.

[Big Poppa]

PMik:can you send it to me too,please?

kolovodza@gmail.com

tnx...

[gar]

PMik, please send NAD304 Zip here as well - TIA!
gwickes@skyinet.net

[Mrpong]

Hello

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

Thank you in advance

[danka]

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

[PMik]

Daniel

You got mail

[Rodzilla]

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