Studer 1.865.130.11

[Lemontheo]

Hi,
i have found a Studer board in a trash can. The board reference is 1.865.130.11.
There is 6 transformers on it.
Does anyone know where this board came from? And is there a schematic somewhere?

Thanks!

 

[gyraf]

A search on the first figures 1.865.13.. finds

http://revoxsammler.ch/Studer Preislisten/Studer Preisliste 2001.pdf - which indicates that this numbering scheme seems to originate from a D780 (DAT recorder).

A search for that DAT finds an image that contains something that looks a lot like yours (the card to the outer left side)

https://www.usaudiomart.com/details/649958142-studer-d780-dat-recorder-player/images/4346277/

/Jakob E.

https://img.usaudiomart.com/uploads/large/4346278-b3d69df6-studer-d780-dat-recorder-player.jpg

 

[Walrus]

Google......
https://archive.org/details/studer_D780_Op_Serv/page/n203/mode/2up

 

[zamproject]

There is 6 transformers on it.

You may harvest them, they are mic, line in and line out.
Be very carefully with the neutrik like (4 input) very sensitive to mechanical stress especially when pins heated.
The inside plastic support melt very easy and if you bend a pin the winding wire may break...

I had a non negligible fail rate pulling those out from various studer board, especially on 2 layer, where top hidden side is unacessible if solder don't come out completely, from bottom, whatever braid or desoldering gun...and the more you heat the more you reduce your chance.
I don't have a heat soldering gun so never try that way, heat from the bottom and just let the trafo come out by himself...still don't know if it will work better or be safer...

 

[Lemontheo]

Thanks a lot all of you!

http://revoxsammler.ch/Studer Preislisten/Studer Preisliste 2001.pdf - which indicates that this numbering scheme seems to originate from a D780 (DAT recorder).

I had no idea such a document existed! I have downloaded the Service Instructions of the D780, and indeed, it matches. The reference is a little different, but the layout of the components corresponds.

You may harvest them, they are mic, line in and line out.

It's already done ! Everything is working.

With the line and output transformers, it makes me want to make a stereo Studer 169 channel strip for my mix bus, in a 1U rack, and use the mic transformers for another project.

 

[zamproject]

it makes me want to make a stereo Studer 169 channel strip for my mix bus

Not sure it will work as is, 169 lineIN is 1:1, here we have a 1:0.175... with an opamp topology
LineOUT differ too.

 

[Lemontheo]

Effectivement...
I hadn't looked at the transformer specs

 

[13engrsapper]

Hi,
i have found a Studer board in a trash can. The board reference is 1.865.130.11.
There is 6 transformers on it.
Does anyone know where this board came from? And is there a schematic somewhere?

Thanks!

I think it is this generation. It is a bit new for our shop to have any useful input, sorry.