Hi,
I renovating a sansui au-717,
but I accidentally pulled of several of the cabels to the volume knob/balance.
so I have tried to backtrace the connections by scematics, but
where little unsure about a cable or 2....
so does anybody have a photo with the cables connected.. ?
its about the balance part i dont know.
best christmas regards
Niklas.
I renovating a sansui au-717,
but I accidentally pulled of several of the cabels to the volume knob/balance.
so I have tried to backtrace the connections by scematics, but
where little unsure about a cable or 2....
so does anybody have a photo with the cables connected.. ?
its about the balance part i dont know.
best christmas regards
Niklas.
Attachments
Err, balance? That's a 4-gang volume pot where one section has a loudness tap. The tap is usually the 4th pin, while the first 3 are the usual ground side - wiper - input. You should be able to confirm this with the multimeter.
You have downloaded the full AU-517/717 service manual, don't you? All of these connections go to individually numbered posts on the F-2720 board (consult the board layout depiction if in doubt).
These are the connections I'd say you need, from top to bottom, left to right:
11 - 07 - 05 - 09 (VR101a)
12 - 08 - 06 - 10 (VR101b)
21 - 19 - 17 (VR101c)
21 - 20 - 18 (VR101d)
So it looks like the two cables with the common shield may actually be attached on the wrong section now, assuming that shield turns out to be 21.
The channels might also be swapped around, which makes no difference if done consistently and is a matter of convention only. I see that on the balance pot they have the "a" section towards the back and the "b" section towards the front. If the same applies to the volume pot, things would look like this (cross-check with original wiring, if any left):
12 - 08 - 06 - 10 (VR101b)
11 - 07 - 05 - 09 (VR101a)
21 - 20 - 18 (VR101d)
21 - 19 - 17 (VR101c)
That said, b - a - d - c doesn't make an awful lot of sense to me, but whatever.
You have downloaded the full AU-517/717 service manual, don't you? All of these connections go to individually numbered posts on the F-2720 board (consult the board layout depiction if in doubt).
These are the connections I'd say you need, from top to bottom, left to right:
11 - 07 - 05 - 09 (VR101a)
12 - 08 - 06 - 10 (VR101b)
21 - 19 - 17 (VR101c)
21 - 20 - 18 (VR101d)
So it looks like the two cables with the common shield may actually be attached on the wrong section now, assuming that shield turns out to be 21.
The channels might also be swapped around, which makes no difference if done consistently and is a matter of convention only. I see that on the balance pot they have the "a" section towards the back and the "b" section towards the front. If the same applies to the volume pot, things would look like this (cross-check with original wiring, if any left):
12 - 08 - 06 - 10 (VR101b)
11 - 07 - 05 - 09 (VR101a)
21 - 20 - 18 (VR101d)
21 - 19 - 17 (VR101c)
That said, b - a - d - c doesn't make an awful lot of sense to me, but whatever.
Someone on the forum linked below might have a pic of that pot with wires attached. No harm in asking.
Exclusively Sansui | Audiokarma Home Audio Stereo Discussion Forums
Exclusively Sansui | Audiokarma Home Audio Stereo Discussion Forums
Thanks for the help, this helps a lot,
I failed to understand the scematic... not a pro but under development, so once again, thanks for taking the time right before christmas, Sgrossklass. 🙂
I failed to understand the scematic... not a pro but under development, so once again, thanks for taking the time right before christmas, Sgrossklass. 🙂
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