Android TV dongle stopped working - Acer PL3510ATV Vero projector

PiotrT
PiotrT Member Posts: 3 New User

Android TV dongle stopped working. The projector displays a screen that it cannot find the source and urges me to press the POWER button on the ATV remote control. It does nothing. Yes, the remote control has charged batteries.
I will add that this problem has appeared from the very beginning of using this projector, but I worked around it like this: I set the Android TV source, restarted the projector and Android TV started. Now it does not help anymore.

Eny ideas?

Piotr