Hi @Petr68, sorry to hear about this.
I have translated your question to English as this is an International forum, please post any replies in English and it will be easier for me and other users to assist you.
If the display was replaced at an authorized service centre, either the warranty for the device will still be valid, or you should get a warranty for the job that was done to the device.
Was the display replaced at an authorized service centre or did you replace it yourself?
