Vintage Synth Repair

Would there be any possibiliy of anyone here emailing me some Hi-Rez photos of both the component and soldered sides of the 901a and b modules?

Any help would be really appreciated.

Cheers,
Tom

> To: vintagesynthrepair@yahoogroups.com
> From: noddyspuncture@...
> Date: Tue, 15 Sep 2009 16:42:09 +0000
> Subject: [vintagesynthrepair] Could anyone please help with some 901 photo's...?
>
> Would there be any possibiliy of anyone here emailing me some Hi-Rez photos of both the component and soldered sides of the 901a and b modules?
>
> Any help would be really appreciated.
>
> Cheers,
> Tom
>
>
>
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>;

Does somebody here have schematics of old power supplies Boschert  
SL220 3605R and
Lambda LOD-X-152? Both were used in early version of power pad for  
Kurzweil K250. I'm trying to repair it to be able to continue with  
repair of this instrument.

In Boschert switching power supply (+ 5 V/45 A) one fuse always blows  
away after switching on.

Lambda linear power supply (+/- 15 V/2 A) works but  both output  
voltages differ, when I set -15 Volts, + side gives only 11.5 V.

It would be a big help to me if somebody have Service Manual for this  
instrument in electronic form and can send it.

Thanks for any advice.

Daniel Forro

--- In vintagesynthrepair@yahoogroups.com, Daniel Forro <dan.for@...> wrote:
>
> Does somebody here have schematics of old power supplies Boschert  
> SL220 3605R and
> Lambda LOD-X-152? Both were used in early version of power pad for  
> Kurzweil K250. I'm trying to repair it to be able to continue with  
> repair of this instrument.
> 
> In Boschert switching power supply (+ 5 V/45 A) one fuse always blows  
> away after switching on.
> 
> Lambda linear power supply (+/- 15 V/2 A) works but  both output  
> voltages differ, when I set -15 Volts, + side gives only 11.5 V.
> 
> It would be a big help to me if somebody have Service Manual for this  
> instrument in electronic form and can send it.
> 
> Thanks for any advice.
> 
> Daniel Forro
>
This place has the Lambda in stock:

http://www.modumend.com/sale/lambda_LO_Series.htm

--- In vintagesynthrepair@yahoogroups.com, Daniel Forro <dan.for@...> wrote:
>
> Does somebody here have schematics of old power supplies Boschert  
> SL220 3605R and
> Lambda LOD-X-152? Both were used in early version of power pad for  
> Kurzweil K250. I'm trying to repair it to be able to continue with  
> repair of this instrument.
> 
> In Boschert switching power supply (+ 5 V/45 A) one fuse always blows  
> away after switching on.
> 
> Lambda linear power supply (+/- 15 V/2 A) works but  both output  
> voltages differ, when I set -15 Volts, + side gives only 11.5 V.
> 
> It would be a big help to me if somebody have Service Manual for this  
> instrument in electronic form and can send it.
> 
> Thanks for any advice.
> 
> Daniel Forro

Also:

www.K1000.net
>

Thank you for advice. I found this site before but somehow thought  
they repair only.

Daniel Forro

On 21 Sep 2009, at 7:59 PM, Scott wrote:

> --- In vintagesynthrepair@yahoogroups.com, Daniel Forro  
> <dan.for@...> wrote:
>>
>> Does somebody here have schematics of old power supplies Boschert
>> SL220 3605R and
>> Lambda LOD-X-152? Both were used in early version of power pad for
>> Kurzweil K250. I'm trying to repair it to be able to continue with
>> repair of this instrument.
>>
>> In Boschert switching power supply (+ 5 V/45 A) one fuse always blows
>> away after switching on.
>>
>> Lambda linear power supply (+/- 15 V/2 A) works but  both output
>> voltages differ, when I set -15 Volts, + side gives only 11.5 V.
>>
>> It would be a big help to me if somebody have Service Manual for this
>> instrument in electronic form and can send it.
>>
>> Thanks for any advice.
>>
>> Daniel Forro
>>
> This place has the Lambda in stock:
>
> http://www.modumend.com/sale/lambda_LO_Series.htm