maybe tv is in hotel mode... try MENU 7906
Dodano po 5 [godziny] 1 [minuty]:
or try with a software recovery
https://www.sharpconsumer.eu/it/product/6000-2/48-2/lc-48cff6002e/c48cf6002eb07b/
download the software V1.02 (filename sw_upgrade_V1.02_20160613_151026.zip)
copy the file allupgrade_6308rtbm.bin on an empty usb stick (don't rename it)
connect the power cord at the mains socket and press the standby button on the tv or remote control
the tv will come on and the light on the front will flash blue whilst updating, when it has completed the light will turn to red
remove the usb stick and turn the tv on
you will be welcomed with the first time installation screen (if you are not, on the remote control press MENU 8888)
press OK to retune the tv