Doepfer

Hello,

my A190 mcvs recently started to malfunction. It freeze sometimes and after some seconds all the leds start blinking. After a reset it restart but still malfunctioning after some time.

I think the eeprom 24c16 can be defective so I replace it but at this point the module is totally off. I try also to replace the cpu with a new one without success. When I reinstall the original 24c16 the module is malfunctioning but with the new one is totally ko.

I have the complete service manual because I bought it many years ago when I started with eurorack modulars. The components of the schematic of the 190 is a little bit different from what I found in my module, the eeprom was 24c02 and also the eprom is half of memory capacity.

Anyone have a suggestion for troubleshooting? Maybe I have to replace the eprom? My module is old and out of production...

Fabio

Italy

Please contact our A-190-1 specialist Matthias Marass directly
(keyboards@doepfer.de).

Best wishes
Dieter Doepfer

> Hello,
> my A190 mcvs recently started to malfunction. It freeze sometimes
> and after some seconds all the leds start blinking. After a reset
> it restart but still malfunctioning after some time.
> I think the eeprom 24c16 can be defective so I replace it but at
> this point the module is totally off. I try also to replace the
> cpu with a new one without success. When I reinstall the original
> 24c16 the module is malfunctioning but with the new one is totally ko.
> I have the complete service manual because I bought it many years
> ago when I started with eurorack modulars. The components of the
> schematic of the 190 is a little bit different from what I found
> in my module, the eeprom was 24c02 and also the eprom is half of
> memory capacity.
> Anyone have a suggestion for troubleshooting? Maybe I have to
> replace the eprom? My module is old and out of production...
> Fabio
> Italy