WHAT CAN I DO? IS THERE A RESET BUTTON ON THE TELEVISION
To release the panel lock, you should have a remote control. If you wish to buy its original remote control, contact the authorized service centre, or authorized dealer to your device brand. They can either give you a genuine remote control to your device, or can direct you, from where can you purchase a suitable one.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Unlock procedure to many popular brand TVs are given.
SOURCE: DELL LCD TV locked up w/screen message "main menu locked"
without a remote and disabled keypad keys, the only other option, is to open the unit up a physically RESET the TV. remove the cables from the power board. i believe it has a phillips head screw. careful when you separate the rear cover from the front cover. there is a board screwed in the lower right corner, there is a connecter and a ground cable screwed to the rear cover. take your time prying on the rear cover. once you separated the two pieces, look for the light yellow board with your AC power source. Unplug it for 30 minutes and repeat the process. while your at it, also look down to the lower left side of the monitor. u should be able to see the keypad. press each button, while pressing, look to see if the button is pressing against the circuit board. it may be loose, try this test, u just may be able to fix your keyboard as well. hope this works out.
SOURCE: Panasonic remote and volume/channel buttons do not work
My son put a penny in the SD card slot of my Pansonic flat screen tv. I finally got the penny out but now the volume and tv controls do not work. I can change the channels through my cable box but that is it. The volume does not work on my cable remote or the flatscreen. What do you suggest I do to fix this problem?? Thanks, Josh
SOURCE: Videocon tv ----on screen showing sorry panel is
remote buttons not working & screen showing M
SOURCE: Describe your hisense tv ~20in(?) Flat Panel TV. I
I HAD THAT SAME PROBLEM ALL YOU DO IS HOLD THE MENU BUTTON UNPLUG THE TV AND PLUG IT BACK WHILE STILL HOLDING THE MENU BUTTON GO TO GENERAL SETTINGS AND TURN ON RESET MENU ON FROM THIER AUTO SEARCH YOUR CHANELS NOW U CAN HEAR THE TV BUT BLACK SCREEN NOW UNPLUG YOUR TV FOR A FEW MINUTES PLUG IT IN AND YOUR TV SHOULD BE BACK ON THIS IS THE 3RD TIME IT HAS HAPPEND TO ME IT WORKS
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