Bosch fridge freezer motor only running a few seconds

Hi all.

I have a Bosch fridge freezer, around 11 years old — type with the digital display of freezer and fridge temp, ‘eco’ setting, all push button etc. Model number missing, but it has the removable rear panel within the freezer part if that helps ID it. Problem it has developed is that the compressor starts, but only runs for about 5 – 10 seconds before stopping again. Eco or superfreeze setting doesn’t seem to make much odds — it still defrosts. It’s not a refrigerant issue — I’ve temporarily ‘hot wired’ the compressor and it’s freezing down fine. Also. the temp display is working fine and reasonably accurately, so whatever does the measurement seems OK. All thoughts suggestions and solutions welcomed !

Thanks, Mike.