I can not get the power lights and standby lights to turn off even when i turn them off in the menu , the remote is sluggish, and if i turn tv on on the tv i get a long beep my tv is a 55 inch led lg 55le5500 tv

Samsung Smart TV hidden secret menu allows you to do a factory reset and also connect some Bluetooth devices which you were unable to do before. Be careful while fiddling with these options as I cannot take any guarantee if you spoil the TV settings. The Samsung Smart TV I used in the video is Samsung F4500. The secret menu will not open with a smart remote. You may buy or borrow the original normal rectangular Samsung remote to access the secret menu but I am not so sure that will work.
Here are all methods to access the secret menu of different Samsung smart TV:
Method 1

Put the TV on standby and then push in series these buttons on the remote: 'info, menu, mute, power' the TV will then turn itself on and display a menu.
Method 2

Turn the power off. On the remote, press Mute followed by 1, 8, 2, Power in sequence.
Method 3

With the TV in standby, press the {DISPLAY} {P.STD} {MUTE} {POWER} on the remote.
Method 4

With the TV in standby, press the {SLEEP} {P.STD} {MUTE} {POWER} on the remote.
Method 5

With the TV in standby, press the {DISPLAY} {MENU} {MUTE} {POWER} on the remote.
Method 6

With the TV on standby. On the remote, press Mute followed by 1, 1, 9, Enter in sequence.
Method 7 for Smart TV RU7100, NU7090 Series 7 (suggested by viewer Caleb Harch)

Your tv sounds fairly normal to me - there is a difference between a tv being switched off and being on standby. It is usual for a tv to need to be switched on manually and from there the remote would be able to switch it between on and standby.
Sometimes the "power" button of the remote only switches the set to standby and selecting a channel would switch it from standby...

I don't have service mode specifications but I do have a Samsung and looked around for how to get it in service mode some time ago because the HDMI cables somehow disconnected themselves a lot. Thought it was an electronic problem but it turned out to be a parenting problem instead SO I have never used this information and can not vouch for it. I cut and paste it from a note I copied from a forum entry to use at your discretion:
First post:
To enter "Service Mode" Press the remote - control keys in this sequence :
From Standby Info-Menu-Mute-Power On
- The buttons are active in the service mode.
Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left, Arrow Right, Menu, Enter, Number Key(0~9)
Careful though there are things you shouldn't touch in this menu.

avforums.com/forums/lcd-led-lc­d-tvs/601553-samsung-service-m­enu-research.html

Another post:
Method 1
Put TV on standby and then push in series these buttons on the remote: 'info, menu, mute, power' the TV will then turn itself on and display a menu.
Method 2
Turn the power off. On the remote, press Mute followed by 1, 8, 2, Power in sequence.
Method 3
With the TV in standby, press the {DISPLAY} {P.STD} {MUTE} {POWER} on the remote.
Method 4
With the TV in standby, press the {SLEEP} {P.STD} {MUTE} {POWER} on the remote.
Method 5
With the TV in standby, press the {DISPLAY} {MENU} {MUTE} {POWER} on the remote.
Method 6
With the TV in standby. On the remote, press Mute followed by 1, 1, 9, Enter in sequence.
Samsung LCD Monitor Service Menu Instructions

End quote.
Good luck. Just a basic suggestion you probably don't need: keep track of any changes made by writing them down so you can put it all back if you have to.

http://www.searspartsdirect.com/partsdirect/user-manuals/lc195sl8-sylvania-parts-tv+lcd-manual [] Control Panel

POWER (pl 1)
Press to turn the unit on and off.
INPUT SELECT (pl 3)

5. SETUP (p11)
Press to display the main menu.
6. infrared sensor window
Receives infrared rays transmitted from the remote
control.
7. power on indicator
Lights up when power is on.
8. standby indicator
Lights up in standby mode.

Depending on the brand and MODEL number here is what I think happened.

All TV sets have a Standby power supply. It runs all the time even if set is off but plugged in.

It supplies among other things the power (usually less then 12 volts DC to run the remote circuitry---It usually is not fuse protected so if a strike hit nearby it may have come in via the power cord.

Trouble is almost certain to be in the standby supply.

Hello
These are the service modes for Samsung. Check it with.
[1]
Turn on the TV on and select the input that you want to adjust.
# Turn the display off
In quick sequence on the remote press:
{MUTE} {1} {8} {2} {POWER} buttons.

# The TV will turn On with the Service Menu displayed.
ADJUSTMENT - TEST PATTERN - SET OPTION BYTE - FACTORY RESET

# Select the function and use the {VOL+} button to enter.
# Save settings and exit by pushing {MUTE} twice then {POWER}.
[2]
With the TV in standby, press the {INFO} {MENU} {MUTE} {POWER} buttons on the remote.
The TV will turn On with the Service Menu displayed.
Press the {POWER} button to exit the Service Menu.
[3]
With the TV in standby, press the
{DISPLAY} {P.STD} {MUTE} {POWER} on the remote.
The TV will turn On with the Service Menu displayed.
Use the {CH+} {CH -} buttons to select items.
Use the {VOL+} {VOL -} buttons to adjust.
Press the {POWER} button to exit the Service Menu

with tv in standby press INFO / MENU / MUTE / STANDBY on remote tv will come on with service menu DO NOT CHANGE ANY SETTINGS
look at list you will see reset
ONLY USE DOWN NAVAGATION KEY until RESET is highlighted
then PRESS RIGHT NAVAGATION KEY the tv will reset
PRESS STANDBY TO EXIT
the tv will need retuneing after
hope this helps

CHECK POWER OUT LET FOR AC CHECK CORD AND FUES FELL OUT