Technics SU-X101 amp schematic wanted, and other questions

falcott · 20th January 2005, 06:54 AM

I have rescued from the rubbish a Technics SU-X101 "New Class A" amp (circa 1990) that is dead. Well, not exactly dead, for at full volume, amongst the hiss there is a ...faint... sound of music. There is nothing visually wrong inside. I am getting full power to the chip, no problems there. Any clues as to what might be wrong?

Any way of ascertaining if the chip is dead or alive without a 'scope? If it is dead, does anyone know where to obtain a replacement cheaply?

Does anyone have a schematic for this amp? The chip is labelled SV1-3102 (14 pins). What is the pinout for this chip?

Over all, the layout of the amp is rather sp****, and fairly basic in construction though well enough built, and looks ripe for hot rodding. Any hints for improving it? (apart from throwing it back into the rubbish pile?

)

Thanks for any help!

EDIT: the bleeped word is defined by my Oxford Dictionary as "thinly scattered." Why I have been chosen to be censored for using the word s_p_a_r_s_e I have no idea, other than I might usually sit on a thinly scattered part of my body when I remove two items first... If you can follow me

falcott · 20th January 2005, 05:48 PM

Anyone?

Tarzan · 21st January 2005, 06:43 AM

Hi, have alook at this address:
http://www.gmkelektronik.de
they ave a lot of schems.
Allthough not the SU-X101 (they have the ..102) but you can ask.
They sell very cheap, 1 Euro!

falcott · 22nd January 2005, 06:27 AM

Thanks for the lead. I emailed, but unfortunately they do not have the schematic I need...

Tarzan · 22nd January 2005, 08:12 AM

Hi,
do have a look here:
http://schforfree.seedhost.com/archi..._Amplifier.zip
its the 102 but just try it out.
Try this forum: http://forum.eserviceinfo.com/
Cheers,Marco

20th January 2005, 06:54 AM	#1
falcott diyAudio Member Join Date: Jul 2004 Location: Wherever I hang my hat...	Technics SU-X101 amp schematic wanted, and other questions I have rescued from the rubbish a Technics SU-X101 "New Class A" amp (circa 1990) that is dead. Well, not exactly dead, for at full volume, amongst the hiss there is a ...faint... sound of music. There is nothing visually wrong inside. I am getting full power to the chip, no problems there. Any clues as to what might be wrong? Any way of ascertaining if the chip is dead or alive without a 'scope? If it is dead, does anyone know where to obtain a replacement cheaply? Does anyone have a schematic for this amp? The chip is labelled SV1-3102 (14 pins). What is the pinout for this chip? Over all, the layout of the amp is rather sp****, and fairly basic in construction though well enough built, and looks ripe for hot rodding. Any hints for improving it? (apart from throwing it back into the rubbish pile? ) Thanks for any help! EDIT: the bleeped word is defined by my Oxford Dictionary as "thinly scattered." Why I have been chosen to be censored for using the word s_p_a_r_s_e I have no idea, other than I might usually sit on a thinly scattered part of my body when I remove two items first... If you can follow me __________________ "Everything should be made as simple as possible, but not simpler." - Einstein

20th January 2005, 05:48 PM	#2
falcott diyAudio Member Join Date: Jul 2004 Location: Wherever I hang my hat...	Anyone? __________________ "Everything should be made as simple as possible, but not simpler." - Einstein

22nd January 2005, 06:27 AM	#4
falcott diyAudio Member Join Date: Jul 2004 Location: Wherever I hang my hat...	Thanks for the lead. I emailed, but unfortunately they do not have the schematic I need... __________________ "Everything should be made as simple as possible, but not simpler." - Einstein

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21st January 2005, 06:43 AM	#3
Tarzan diyAudio Member Join Date: May 2004 Location: Genk	Hi, have alook at this address: http://www.gmkelektronik.de they ave a lot of schems. Allthough not the SU-X101 (they have the ..102) but you can ask. They sell very cheap, 1 Euro!

22nd January 2005, 08:12 AM	#5
Tarzan diyAudio Member Join Date: May 2004 Location: Genk	Hi, do have a look here: http://schforfree.seedhost.com/archi..._Amplifier.zip its the 102 but just try it out. Try this forum: http://forum.eserviceinfo.com/ Cheers,Marco

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