NAD 502 with newbie attached

planarboy · 10th January 2008, 01:28 PM

Hello,
Does anybody know where to get schematics for a NAD 502 CD player?
I found it broken on ebay, and figured I have to start somewhere so this will do, for $70AU.
I'm buying some lowish priced upgrades from a place called Burson in Melbourne (clock, op, shunt reg)bit by bit to suit my frail little budget, but what I really want to know is what sort of power transformer should I think about upgrading to?
I plan to run the clock on a seperate DC power supply and get a better one for the rest of the player, but I know neither of which to buy.
And I decided not to get a seperate DAC for the time being too, again, budget.
Anyway I'm looking forward to buying one bit at a time and trying to hear the improvements with my own ears.
I got a good preamp, headphone amp and HD650s.
Any power-supply/transformer suggestions for a guy that can spend maybe about 150AU a week?
Capacitors, too.

zanash · 12th January 2008, 03:28 PM

i've a pdf of the 521 .....email me

kanompia · 8th July 2008, 06:28 AM

I want NAD 502 schematic too.
I'll email to you ASAP as I can upgrade to another level of member.

planarboy · 8th July 2008, 11:52 AM

hey, I got it! from vintage manuals dot com
but I think I accidentaly threw it out, and have to get anoter.
Anyway, vintagmanuals.com does it for around 20 bucks.
I'm gonna try this cheap ebay low jitter circuit and maybe burson ops and shunts...mid price gear from Melbourne Oz
Oh yeh, gotta get it to PLAY A DISC yet.

planarboy · 8th July 2008, 12:01 PM

Quote:

Originally posted by zanash
i've a pdf of the 521 .....email me

zanash sorry about the non-comm, I got the schem and sent that off to my mate anthony and hes telling me to get the 502 anyway, cheers for the help though.
I totally forgot about this thread, I'm in vinyl land at the moment.

Leonfijen · 13th August 2008, 10:27 PM

Quote:

Originally posted by zanash
i've a pdf of the 521 .....email me

Zanash, would you be so kind and send me ( fyenleon@pi.net) a copy, espacially from de power-part. I have some problems with the power and don't find what is wrong. Thanks

TRANSDUCEReng · 2nd August 2010, 04:28 PM

hi zanash
could send me a copy too as i just aquaired one and intend to make some MODS on the output stages...thanks so much

10th January 2008, 01:28 PM	#1
planarboy diyAudio Member Join Date: Jun 2007	NAD 502 with newbie attached Hello, Does anybody know where to get schematics for a NAD 502 CD player? I found it broken on ebay, and figured I have to start somewhere so this will do, for $70AU. I'm buying some lowish priced upgrades from a place called Burson in Melbourne (clock, op, shunt reg)bit by bit to suit my frail little budget, but what I really want to know is what sort of power transformer should I think about upgrading to? I plan to run the clock on a seperate DC power supply and get a better one for the rest of the player, but I know neither of which to buy. And I decided not to get a seperate DAC for the time being too, again, budget. Anyway I'm looking forward to buying one bit at a time and trying to hear the improvements with my own ears. I got a good preamp, headphone amp and HD650s. Any power-supply/transformer suggestions for a guy that can spend maybe about 150AU a week? Capacitors, too.

8th July 2008, 06:28 AM	#3
kanompia diyAudio Member Join Date: Feb 2004 Location: Bangkok	I want too. I want NAD 502 schematic too. I'll email to you ASAP as I can upgrade to another level of member.

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12th January 2008, 03:28 PM	#2
zanash diyAudio Member Join Date: Feb 2005 Location: Notts	i've a pdf of the 521 .....email me

8th July 2008, 11:52 AM	#4
planarboy diyAudio Member Join Date: Jun 2007	hey, I got it! from vintage manuals dot com but I think I accidentaly threw it out, and have to get anoter. Anyway, vintagmanuals.com does it for around 20 bucks. I'm gonna try this cheap ebay low jitter circuit and maybe burson ops and shunts...mid price gear from Melbourne Oz Oh yeh, gotta get it to PLAY A DISC yet.

2nd August 2010, 04:28 PM	#7
TRANSDUCEReng diyAudio Member Join Date: Sep 2004 Location: Malaysia	hi zanash could send me a copy too as i just aquaired one and intend to make some MODS on the output stages...thanks so much

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