NOTE: Please note down the default values before changing them, so that you can restore them if something goes wrong or you don't like the output.
All digital TVs contain a secret service code which allows you to change some internal settings like picture height, width, position, colors, etc. Basically this service menu is used by TV mechanics.
Here we are sharing service codes for LG and Sony TVs.
For Sony TV:
First power off your TV using remote, then Press <Display> + 5 + Vol Up + Power button simultaneously on remote.

Now you can make desired changes to the settings.
To save the changes, just press Mute + 0.
For LG TV:
Press and Hold <OK> button on remote as well as TV panel at the same time for a few seconds.

For some TV models, you'll need to press "Menu" button on remote and TV panel simultaneously for a few seconds.
Now you can make desired changes to the settings.
To save the changes press <OK> in Remote.
PS: Be very careful while playing with the service menu. First make changes but don't apply them. If something goes wrong, just switch off the TV and switch on it again.
This article was posted by VG in following section: Mobile Phones.
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ganesh
sir i changed some setting of my lg ultra slim tv, now the picture is some tilted, plz tel me how to set it to default. plz mail me.
thanks
arun kumar
i have opened service mode in my LG cineplus tv(basic model color tv)...now i have problem please reply me how to reset factory settings in my tv..
thanks in advance
JAI
i have LG LD3330 32 inch LCD, not able to use the USB option , want to know if we can enable it in the service menu , but how to access the service menu , pl help
keong
i want to know the code to entering lg lcd model 32ld330-ta ,i have try press menu on tv,press menu on tv & remote,press ok on tv ,press ok on tv & remote.all the way i try is not working.thanks.please email me if got the code thanks again
FRANK OWUSU
can any onyone help with my Philips plasma 50 inches tv with model : 42pf7321/12. the relay shoot and go off again, nothing is displaying on the screen. I need ur help urgently.
R.banaei
hi my dear
i need Secret Service Codes for Sony lcd tv z550
thanks
Masud
Lg tv problem is make auto sears show picture but no catch channel vco coil is ok. Please tell me what problem.
Anthony Ahu
Ferguson tv 14'' type: 626/ tx91 everything warks but i canot enter tuning the brightnes and contract are ok
gulbaba
my sony tv kv-j21pf1 shows continous blinking of power LED as i replaced ic tda8375a but same position
voltage of command ic is blinking please suggest thanks
Adeyemi
I can't locate d display botton on my remote.could it be d menu botton