Sony TA-N55ES power amplifier

mikeks · 2nd September 2006, 07:56 PM

Sony TA-N55ES power amp. service manual or schematic wanted please.

Anyone?

tvi · 2nd September 2006, 09:56 PM

I have the Service Manual, 3.8megs.
E-mail?

Regards
James

destroyer X · 2nd September 2006, 10:23 PM

nanabrother@yahoo.com

Thanks in advance by your kindness,

regards,

Carlos

parsecaudio · 2nd September 2006, 11:02 PM

Hi CARLOS , MIKEKS and all diyAudio members.

I have uploaded the service manual of this power amplifier on

http://fileshare.eshop.bg/

click and search for n55es.

All people can download the S.M. for free.(DOWNLOAD ALL THE TWO PARTS ,file is .rar)

I know this power amplifier because I had repaired two times two differents models.
It was considered a good amp on the Sony ES series,but I'm not sure.
A Sanyo power pack is the voltage amp,the N-55ES has some stability problems,it is not able to drive a loudspeaker less than 4.5 Ohms,the distortion,very good at low frequencyes ,will increase from 2 KHz.This amp has a very high amount of NFB...

mikeks · 3rd September 2006, 01:31 AM

Quote:

Originally posted by parsecaudio
Hi CARLOS , MIKEKS and all diyAudio members.

Thanks parsecaudio and TVI!

johndiy · 3rd September 2006, 03:43 AM

Hi
you guys have a lot of commercial amp diagrams
can you email them to me

file formats: webgraphics etc,pdf

thanks

john

lumanauw · 3rd September 2006, 04:01 AM

Hi, Mikeks,

There's something I don't understand about this Sony TA-N55ES schematic.
Look at "inside" of IC301 (STK3102III). At the VAS. It is cascoded, but if it is a cascode, shouldn't the cascode transistor is PNP?

In the schematic, it is NPN, it is static voltage in pin10, how can it get audio swing voltage?

Greg Erskine · 3rd September 2006, 04:06 AM

hey George (aka johndiy

),

There is a link in parsecaudio post that has the manual. You will need software than handle .rar files.

regards

TomWaits · 3rd September 2006, 06:13 AM

the link died. I would like to see this schematic too, if possible?

Cheers,

Shawn.

shawn@raindogindustrialarts.com

Jan Dupont · 3rd September 2006, 06:34 AM

Let me have a copy, and I post it on my website

2nd September 2006, 07:56 PM	#1
mikeks Account Disabled Join Date: Jun 2004 Location: Animal farm	Sony TA-N55ES power amplifier Sony TA-N55ES power amp. service manual or schematic wanted please. Anyone?

2nd September 2006, 10:23 PM	#3
destroyer X diyAudio Member Join Date: Feb 2004 Location: Recife - Brasil Northeast	TVI, uploading to Mikeks, please, include my name too nanabrother@yahoo.com Thanks in advance by your kindness, regards, Carlos __________________ My Youtube channel; http://www.youtube.com/user/destroyersoueu?feature=mhee

3rd September 2006, 04:06 AM	#8
Greg Erskine diyAudio Member Join Date: Jan 2002 Location: Sydney/Australia	hey George (aka johndiy ), There is a link in parsecaudio post that has the manual. You will need software than handle .rar files. regards __________________ Greg Erskine

3rd September 2006, 06:13 AM	#9
TomWaits diyAudio Member Join Date: Aug 2005	I missed out... the link died. I would like to see this schematic too, if possible? Cheers, Shawn. shawn@raindogindustrialarts.com

3rd September 2006, 06:34 AM	#10
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Let me have a copy, and I post it on my website __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com


	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

2nd September 2006, 09:56 PM	#2
tvi diyAudio Member Join Date: Apr 2001 Location: Moonee Ponds, Vic, Australia	I have the Service Manual, 3.8megs. E-mail? Regards James

2nd September 2006, 11:02 PM	#4
parsecaudio diyAudio Member Join Date: Apr 2004 Location: ventimiglia	Hi CARLOS , MIKEKS and all diyAudio members. I have uploaded the service manual of this power amplifier on http://fileshare.eshop.bg/ click and search for n55es. All people can download the S.M. for free.(DOWNLOAD ALL THE TWO PARTS ,file is .rar) I know this power amplifier because I had repaired two times two differents models. It was considered a good amp on the Sony ES series,but I'm not sure. A Sanyo power pack is the voltage amp,the N-55ES has some stability problems,it is not able to drive a loudspeaker less than 4.5 Ohms,the distortion,very good at low frequencyes ,will increase from 2 KHz.This amp has a very high amount of NFB...

3rd September 2006, 03:43 AM	#6
johndiy Banned Join Date: Aug 2006	Hi you guys have a lot of commercial amp diagrams can you email them to me file formats: webgraphics etc,pdf thanks john

3rd September 2006, 04:01 AM	#7
lumanauw diyAudio Moderator Emeritus Join Date: Oct 2002 Location: Bandung	Hi, Mikeks, There's something I don't understand about this Sony TA-N55ES schematic. Look at "inside" of IC301 (STK3102III). At the VAS. It is cascoded, but if it is a cascode, shouldn't the cascode transistor is PNP? In the schematic, it is NPN, it is static voltage in pin10, how can it get audio swing voltage?

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