Vintage Synth Repair

Hi,

let me guess... power supply? If there's no +5 Volt line, then  
probably not everything is OK :-) It's logical it can't start without  
that voltage.

Begin from there. Measure output voltage, check or change voltage  
regulator, change electrolytic capacitors for new ones... usual staff.  
Old linear power supplies are not so complex, and I would suppose  
there's such one, not switching one.

Daniel Forro


On 21 Feb, 2013, at 5:15 PM, fainardi83 wrote:

> hello all
> i have a korg kr33 that doesn't start
> i check voltage everything is ok except that there is no +5v
> i have the schematics of the kr55 but it is not complient with the  
> kr33
>
> does anyone have the schematics of the kr33 ?
> or does anyone know how can i fix the problem of the +5v
>
> regards all