TV service menu

https://www.lg.com/us/support-product/lg-55LB6100

If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Circuit diagrams of many popular brand TVs and other devices are given. You can get details there.

LG Service Menu Instructions

Method 1

Press and Hold <OK> button on remote as well as TV panel at the same time for a few seconds.

Method 2

Press and hold the {MENU} button on the remote and the {MENU} button on the TV at the same time for at least 5-7 seconds.

Method 3

Press and hold the {MENU} button ON THE REMOTE until a 4-digit password screen is displayed.
LG Service Menu PIN/Password Codes

• 8 7 4 1
• 8 7 4 3
• 7 7 7 7
• 0 0 0 0
• 8 8 7 8
• 0 4 1 3

LG LCD Monitor Service Menu Instructions

1. First turn off the lcd monitor, then press and hold the "MENU" button, then turn on the monitor. Release MENU button after the monitor is turn on.
2. Press "MENU" button to open the OSD menu, at the bottom of menu, you can see a new selection to go into the factory service mode. Inside the factory service mode, you can see useful information like, product model, manufacturer date, F-ENGINE chipset version, lcd panel number and etc.

Press the helpful button and check link below for various models

First power off your TV using the remote, then press following buttons quickly on your TV remote:
Display (or i+) + 5 + Volume Up + Power
It'll show the hidden service menu on your TV screen.
Once you enter into service menu, you can press Menu (or Options) button again on your remote to switch between various service modes such as Digital, Chassis and VPC.
To navigate between available options press 1 or 4 buttons. To change or modify their values press 3 or 6 buttons.
To save your changes, just press Mute + 0 (or Enter) buttons on the remote.
To restore settings to factory defaults, press 8 + 0 (or Enter) buttons.
PS: For some new models the above mentioned method might not work. You can try following key sequence to access service menu in those new models:
While TV is on, press Left + Right + Mute + Center button + Mute + Menu buttons.

Hidden Secret Service Menu Codes for Sony Samsung LG and Philips TV
TV Service Menus Hidden features you didn know about

you hav''nt specified tv model but you need to have a service code of that model press this service code after pressing menu

Its going into standby mode and unless you hit a button on the remote or the TV, the TV assumes you are not watching and turns it off as a power saving feature. You used to be able to disable this feature by holding down menu on your remote and holding down menu on the TV for about 10 seconds however with this model TV that option is not available with the remote provided. I'm told you need to purchase a 105-102M Service Remote and that will allow you to get to the service menu to disable the Standby feature. Good Luck!

Yes it's possible to use the USB port , you only have to change settings in TV setup to change it.
With software ver 3.15 it's very easy see link below how to change setup.


http://lgusb.wikispaces.com/#support

with tv on press and hold menu until a password screen pops up, the password is 8741. This works for most of the LG TV's.

I want enter the convergent net code

Make sure the TV is on and:
1) Press and hold the Menu button on your TV SET
2) Press and hold the Menu button on your REMOTE CONTROL (at the same time)
3) Continue holding BOTH buttons down for 5 secconds or until the Service Menu pops up
4) Release the MENU button from your REMOTE CONTROL, then release the MENU button from the TV Set.
5) Press and hold ENTER (or OK) on the TV Set, then:
6) Press and hold MUTE on the REMOTE CONTROL (while still holding down the ENTER button on the TV SET
7) Holding both buttons down should lead to the Lamp Life Hours screen to pop up.
Release the MUTE button the REMOTE CONTROL, then release the ENTER (or OK) button on the TV Set.
9) Come back to this blog and post your HOURS on our site
10) Now press SELECT, then SELECT again to confirm the reset of the counter
** If the procedure above does not work swap steps 5 & 6.
** For a few special models (including 44SZ8D), you might have to change step 5 to:
5a) Press Enter on the TV Set to enter the Position Adjustment Screen
5b) Press and hold Enter on the TV Set (the TV should go back to the main Service Menu, continue holding Enter) and now also hold down the MUTE button on your REMOTE CONTROL. After about 5 seconds, your Lamp Life Counter should pop up.