Is anyone familiar with Sansui G22000's power amplifier section? - diyAudio
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Old 21st February 2005, 10:58 PM   #1
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Default Is anyone familiar with Sansui G22000's power amplifier section?

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My father had left this amplifier in my aunt place when he went back to Hong Kong. Now I come back to study in US, and I pluged this monster to the wall but could not get it working. How do you trouble shoot this giant piece? It seems like a good amp from my search. However, noone seems to teach ppl how to fix it. Can anyone help me?
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Old 21st February 2005, 11:28 PM   #2
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Where's the tuner/preamp?

It won't power up by itself...the power protection and such is in the tuner/preamp section. What you got there is 1/2 of a G-22000.
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Old 21st February 2005, 11:38 PM   #3
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Too bad, then I think the reciever was stolen a long time ago. I think this section and a pair of AR 9 speakers are too heavy to carry back then..... What should I do about it?
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Old 21st February 2005, 11:41 PM   #4
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It might be possible to construct the circuitry to get the amp section to power up if you are knowledgable. Elsewise, you might think of selling it to someone who could tackle a project like that.
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Old 21st February 2005, 11:49 PM   #5
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I found this on ebay http://cgi.ebay.com/ws/eBayISAPI.dll...&rd=1&tc=photo

Will it help to figure out where is the on/off circuit at?
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Old 22nd February 2005, 12:03 AM   #6
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The G-22000/G-33000 has some rather bizarre circuitry to control the power-on/off of the amp. It's not stuff for rookies, but if you want to dig into it, the schematics would be a start.

I'll warn you that the manual/schematic is FULL of errors, and the connector for the umbilical cord (you see it on the amp...12 pins meant to connect to the tuner/preamp) is NOT properly documented in the manual, so I can guarantee that you'll have your hands full.
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