Looking for a service manual or schematic for Advantage 3 temperature controller (Cooperheat / Stork)

Hi everyone,


I'm trying to repair an Advantage 3 temperature/time controller (labelled as Cooperheat or Stork). I was able to find several user manuals and technical specifications online, but I haven’t been able to find the service manual or internal circuit diagram/schematic, which is what I actually need for component-level troubleshooting.


The device is marked as Model: Advantage 3, used for heat treatment control – it has functions like START, HEAT, SOAK, and displays temperature/time.


Here is a photo of the unit I'm working on:


If anyone has access to a service manual, schematic, or any repair-related documentation – or even general experience working on this unit – I'd greatly appreciate your help.


Thanks in advance!