Please try to upgrade new firmware to check again.
- Unzip the attached firmware.
- Copy to a USB stick. (no other file)
- Choose software upgrade from the OSD menu.
- During the upgrade, please keep the power on until the upgrade ok. Otherwise, the firmware will lose and can not power on again.
- After upgrade, please auto search the channel and test again.
Maybe you also be insteresting DVB-T DVB-T2 upgrade for DVB-T240
For DVB-T area: DVB-T240-T-firmware
For DVB-T2 area: DVB-T240-T2-firmware