Habistat thermostat does not work

[earr]

I have Habistat digital thermostat but the light of the monitor has dissapeared. Does anyone know how to repair it? Old Habistat thermostats have four screws and they are easy to open but digital seems to be close otherwise.
Any idea would be helpfull. Thanks.

[DJC Reptiles]

I would talk to the company who made it.