Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Antonio Grazioli [mailto:antonio_grazioli@fastwebnet.it]
> Gesendet: Mittwoch, 16. Februar 2005 00:16
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] Re: PROBLEMS WITH A190
>
>
>
>
> to Dieter and to Anyone who could help---
>
> I replaced the blown S-80C32 with the P80C32SBAA but nothing has
changed...
> if the two microcontrollers are compatible (i think they are more or
> less the same...) what else can be the problem??? the EPROM with the
> firmware? in this case, is it possible to re-program the EPROM or to
> obtain a new EPROM for the A190??

Of course. If you are able to program an EPROM yourself we can send you the
binary file.
But to speak the truth I'm not sure if it makes sense to change the EPROM,
then the EEPROM, then the 74HC573, then the ???
I'd recommend to make sure that the +5V are OK and to send in the module for
repair if they are OK. Our technician (Matthias Marass is responsible for
the A-190) will find out the reason for the A-190 problems very soon. If
e.g. the +5V terminal of the A-190 has been connected to +12V wrongly a lot
of circuits may be defective. But this would be the worst case.

Best wishes
Dieter Doepfer