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Old 20th January 2005, 06:54 AM   #1
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Question 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
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Old 20th January 2005, 05:48 PM   #2
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Anyone?
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Old 21st January 2005, 06:43 AM   #3
Tarzan is offline Tarzan  Belgium
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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!
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Old 22nd January 2005, 06:27 AM   #4
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Thanks for the lead. I emailed, but unfortunately they do not have the schematic I need...
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Old 22nd January 2005, 08:12 AM   #5
Tarzan is offline Tarzan  Belgium
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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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