This is a problem that happens due to dust and mostly will happen to TVs which are about 5-6 years old (lesser if the environment is dusty)
SOLUTION:
First of all clean the IR output area of the remote control with a slightly wet cloth as well as the IR sensor / touch panel area on the TV
There are 3 possible reasons for this display of "This function is not available now"
1. Your remote is pressing a button which is not applicable in the viewing scenario e.g if there is a “PROGRAM UP” button pressed on the remote when you are watching something from a set-top box. So “PROGRAM UP” button function will be not applicable and hence the error. This error will go off after 10 seconds. Sometimes the remote button gets stuck and you don’t come to know - which will result in the error
Solution : Watch the remote IR output through your mobile camera - do you see some light blinking constantly without your pressing any button. In this scenario, your remote battery will get discharged very quickly i.e within 3 days. Try to turn the remote away from the TV IR sensor for 10 seconds and the display "This function is not available now" should go away.
If the above does not solve the problem, then this next step follows
2. There has been a malfunction of your TV’s IR sensor circuit / touch panel (generally due to some kind of water damage
Please try the following : Open your TV back cover and remove the cable connector of the motherboard that goes to the touch panel / IR sensor area. If doing this removes the display of the error "This function is not available now", then the problem lies in the TV’s IR / touch panel circuit. Switch off the TV Take out the IR sensor / touch panel PCB and clean it with Iso-propyl alcohol and replace it back.
If this too does not solve the problem, then this next step follows
3. There is a overheating happening to main processor on the motherboard (processor chip is most probably the only component with a heat sink attached to it).
The solution is to take a soft brush and remove all dirt over and below the heat sink. Take an air can (high pressure air) and blow it over the main processor as well as on its sides. At times the heat sink is slightly larger than the processor and there is a small gap between the oversized heat sink and the main board below it. This is the place where there might be some dust accumulated and could be the reason of this error.
In case this does not solve the problem, then the last thing to do is to remove the heat sink from the processor (pls refer the heat sink removal process by pcbjunkie youtube video : https://www.youtube.com/watch?v=W7oL3sfz... ). After heat sink is removed, clean the area with the soft brush, use air can to remove any dust particle in the area. Now clean the surface of the processor IC and heat sink with Iso propyl alcohol. Re-install the heat sink using 3M heat sink tape and ensure there are no air bubbles between the heat sink and processor. Once this is done, your error "This function is not available now" will vanish.
Thanks, Vishwa
14 comentarios
Same problem started while watching TV. Pls advise for solutions
- de Sayan Guha
Just reconnect cable again with setup box..
All three video and audio cable..
Reset factory setting..
Restart tv
- de Arun Choudhary
There is no fix unless you get someone to repair it it’s burned something out on the motherboard I would advise just not buying LG and if u do don’t expect it cheap
- de Some guy
How do u get it off the function is not avabile now
- de Nicoles Sykes
I have done that all, clean the sensor and switch panei, and opened the wires… But I get no changes… Please help me , what I hv to do next…!!!
- de Nora hayata
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