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Sansui 5000

Well, the top one will be the same as what is coming off the fuses and should match the case(collector) of TR807.
When I get the chance I'll measure the next two.
I'm not going down further than that as one slip of a probe can really screw things up and my hands aren't that steady these days.
 
Here are both driver boards with all but the TR802 as I haven't figured out which transistor to use instead...

I had to do a small amount rework on the traces

IMG_3596.JPGIMG_3594.JPGIMG_3601.JPGIMG_3602.JPGIMG_3603.JPG
 
Ok I am getting ready to hook these driver boards back up and needing to confirm where all these wires go since I did not get this in working order. The top red (one red is from the fuse and the other goes to collector) blue (base) and black (Emitter) all go to TR808 and the lower red (Collector & Capacitors) blue (Base) and black (Emitter) go to tr810. Same principle left channel

1741059895494.png
 
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Ok I am really confused... The schematic is referencing transistors that I don't see them as both driver boards show TR807 & TR808 but wouldn't one board be feeding TR807 & TR809 for Left channel and TR808 & TR810 for right channel
1741065359831.png
 
There was different nomenclature used for the output transistors with the 5000A and 5000X. The 5000A repeated the 807 and 808 for each channel. The 5000X went to 808 and 810 for the right channel, 807 and 809 for the left. Also remember the 6013 boards did not exist when the 5000A was built, any one who is not an expert on these should have both service manuals for reference but work mostly off the service bulletin IMAHO. I've never needed to change TR802, knock on wood. It's difficult for me to follow all the wiring you've done with TR804 and 805 so I won't comment on that, but I'm not sure you've got a good enough physical contact with TR803. I see you chose a completely different attachment scheme for the signal wire; I suspect the connection will be trickier than you think.
 
Guido57 said:
There was different nomenclature used for the output transistors with the 5000A and 5000X. The 5000A repeated the 807 and 808 for each channel. The 5000X went to 808 and 810 for the right channel, 807 and 809 for the left. Also remember the 6013 boards did not exist when the 5000A was built, any one who is not an expert on these should have both service manuals for reference but work mostly off the service bulletin IMAHO. I've never needed to change TR802, knock on wood. It's difficult for me to follow all the wiring you've done with TR804 and 805 so I won't comment on that, but I'm not sure you've got a good enough physical contact with TR803. I see you chose a completely different attachment scheme for the signal wire; I suspect the connection will be trickier than you think.
Click to expand...
I now have service manuals for the 5000 5000a as well as 5000a service manual version 2 and a 5000x LOL I compared the schematics and see what you mean they are just a generalized graphic representation LOL
 
Guido57 said:
There was different nomenclature used for the output transistors with the 5000A and 5000X. The 5000A repeated the 807 and 808 for each channel. The 5000X went to 808 and 810 for the right channel, 807 and 809 for the left. Also remember the 6013 boards did not exist when the 5000A was built, any one who is not an expert on these should have both service manuals for reference but work mostly off the service bulletin IMAHO. I've never needed to change TR802, knock on wood. It's difficult for me to follow all the wiring you've done with TR804 and 805 so I won't comment on that, but I'm not sure you've got a good enough physical contact with TR803. I see you chose a completely different attachment scheme for the signal wire; I suspect the connection will be trickier than you think.
Click to expand...
I used those terminal blocks for the signal wiring as I had them and the soldering poinrts were way to get to and the screw access is easier then the soldering in place LOLIMG_3608.JPGIMG_3609.JPGIMG_3610.JPG
 
Yeah, with my (lack of) digital dexterity turning those screws would be a pain, and before surgery actually painful.
That's why on my next unit I'm going to disconnect the signal wires at the filter board, provided I can find one at a reasonable price before I die or have to downsize and loose my work space. Not sure if there's a difference, but that thought belongs in the Back Alley Pub section.
 
I have neurological pathway issues so I know how that is. I just had surgery a week ago for a spinal stimulator for pain and nerve damage
 
Hook it up to the Sansui,see if you get sound!

BTW I just discovered this thread. I think I have some Sansui 5000 docs
 
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