Question Philips 40PFT4200/12

Mar 23, 2023
I replaced the motherboard because it was in a rebooting loop, the screen lights up and it shows the Philips logo then it shuts down. Over and over. I tried to update the software but that did not helped. Now after replacing the motherboard it wont turn on, only the standby light is on. It does not react to the remote or the little joystick on the back.
When i reinstall the old motherboard it starts to reboot again. What can i try?:unsure:
Philips 40PFT4200/12