Interesting Sony system switcher

[Moon_Man]

Wow - it's like this thread read my mind.

Yesterday I posted on a Radio Shack "High Power Speaker Control Center", which I bought for $2 at an estate sale and appears to be little more that wire and switches and has gotten some sour AK reviews. That got me thinking, how tough could it be to make a good one myself? :scratch2: I can solder just enough to be dangerous, so I thought I could start with a box that incorporates maybe 2 sources and 4 speakers. Then theres all that "science I don't understand" like impedance matching, etc. So I ask all you smart AKers - has anyone done this and kept the schematic? :thmbsp:

Gracias in advance.
Tom

 

[ryuuoh]

Hitachi switcher

Here's a Hitachi switch I bought a while ago.

 

[bowtie427ss]

Had an SB-3335 decades ago in our store, this thread is the very first time i've seen one since.

 

[tshorba]

I have made these two albums public for this thread

Sansui JB-200
http://s1223.photobucket.com/albums/dd514/tshorba/hifi/Sansui%20JB-200%20system%20selector/

Variant, available under different brands
http://s1223.photobucket.com/albums/dd514/tshorba/hifi/Sansui%20-%20variant%20System%20Selector/

Both are different inside with one point to point and the other with circuit boards. I have the JB-200 still so if more photos are needed just ask.

 

[kandetvara]

Hi folks - I need your help...

I recently bought a Sony System Selector MKII - which was modified in a way which I do not understand. For some reason there were some cables added which I want to remove - but before I do that I would need a service manual or a wiring diagram to make sure that I am doing the right thing... Even a picture of the original wiring would be of tremendous help...

I attach some pictures so that you can see my problem.

Some of the board circuits were repaired - I am not worried about those. What I want to remove - because I dont know why it was done - are the grey cables which were added for whatever reason.

Can you help with a picture or a wiring diagram?

I would need a picture/wiring diagram of the original circuit board where the "grey cables" are coming in...

Any help is more than appreciated - other than tha tthe unit is in splendid condition...

thanks for your help !!