re: saeco vienna deluxe (temp light middle lights up right away)

[stanman]

I checked all components of temp circuit everything ok and still same problem . Im really stuck.
could it be a microcontroller problem ? what else can i check?
please answer even if nothing else i can do.

Thank you
Peter.

 

[schluerf]

Hello,
for better unterstanding here is a link to your first topic.

I searched tho whole (german) Forum, but couldn´t find a similar problem.
If the PTC and the SMD parts are fine, it seems tu be the controller.
Anhang anzeigen 17264

It´s difficult to get only a new microcontroller, but sometimes there is a "Vienna Tuning Chip" available.
Otherwise you can replace the whole board.
Take a look at Goggle and Ebay.