How can I open service menu in Hyundai led TV 24"

TRY THIS FIRST TO OPEN SERVICE MENU
!. Press SOURCE button
2.In SETUP menu screen press numbers 2580 on remote
3.On FACTORY SETTINGS menu select PANEL SETTINGS
4.Then make appropriate changes
Then Power off then on tv and it should be reset

TRY THIS SECOND IF THE FIRST DID NOT WORK TO OPEN SERVICE MENU
1.Press SOURCE button
2.In SETUP menu screen press numbers 2580 on remote
3.On FACTORY SETTINGS menu select SPECIAL SET and ENTER button
4. It will take you to a second screen but still in SPECIAL SET menu click on RESTORE FACTORY DEFAULT

This is a duplicate motherboard [Pure Chinese one]. No need to try to get into service mode. Damn piece indeed.

If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/

open its sevice code.go to picture menu then come on contrast & press this code 9735.tv wil go to service menu here u can do what u want

orignal memory ic is folty replesh new one balnk memory 24 ic but only one pic service menu open for panel -vol - key remot -menu key

Make sure it isn't your cable or satellite TV service making the captions, as closed captions on your TV are separate from the ones produced by your service provider. If it isn't your cable/ satellite, open the TV menu and find the Audio/Visual properties section of the menu (audio and visual might be separate sections), and find the closed captions or CC options menu. When you do just change the setting from whatever it is on, to off. If your TV remote is fancier than mine (which it probably is), their could possibly be a closed caption button on the remote for easy access. In this case just push the button and change what you need to.

HYUNDAI HU-TV2121 processor N403 KALORA HHEN16MD01.Videoprotsesor LA76810A - the very bottom hidden button (right of the circuit), click once highlighted FACTORY. More P + and P-switching options.

HYUNDAI C2910, C2519, C2988
1. Set the volume -0
2. Press the remote button "MUTE"
3. While holding "MUTE", press "MENU" on the front of the TV.
4. On the top right corner will light up the letter "D", and in the left corner shows an adjustable parameter and its value.
5. Pages menu change button "CAL"
Switching parameters conducted green and red buttons on a blue field panel. Change made a yellow and blue buttons on a blue field.

HYUNDAI H-LCD2000
To enter service mode simultaneously press "MENU" and "STANDBY".
Press "MENU" again.

HYUNDAI, ITT 29M03 C2131 chassis CPU M37160M8-064FP
In the main menu code 6, 4, 8, 3.
Tools submenu contains the switch to the next of which is done by putting 6, 4, 8, 3.

HYUNDAI 359, 387, 8FHIFI, CB5373Z, 6578F processor CCU SEL04 / SEL07A
Mode 1: Close contact in the hole near the keyboard and just press "S"
Mode 2: Close contact in the hole near the keyboard and just press "S" again and click on contact. Exodus - LOAD.

HYUNDAI processor SAA1293-03-03 SAA1293A
With remote control TV "Horizon" graphics without clicking "SERVICE", the indicator shows a CH, a paz-click on 'appears OP, then choose the volume of registers numbers "1-4" and numbers "1-9" change bits. Then click on "Memory" (you can also lock the pins 15 and 23 in the control circuit SAA1250). Exodus - POWER OFF.

HYUNDAI chassis CCU11 - "•?" (C) (H)
Chassis CCU12 - close contact in the hole near the keyboard and just press "S". Exodus - LOAD.

HYUNDAI chassis M1, ITT, NOKIA, SALORA 6390, 7190, MV4000, PL14 24 101 852 SAT SOLI, 882 SAT SOLI, 885 SAT SOLI processor CCU-SALO-07 (CCU20XX)
entrance "C"> "*"> "O / V"> "#"> "M". Exodus - "power".

HYUNDAI chassis EUROSTEREO-1. DIGIVISION 1963 .. 2, 1971 .. 2, 2 .. N6 processor NES3-... NES2-..
Log "-/--" "MENU" "TV" - for a second. Exodus - POWER OFF.

HYUNDAI chassis STEREO PLUS. 5575SFN, 28T7 processor ST92T93
Entrance - "i" "M" "P +", output - TV.

HYUNDAI 3875EX DIGIVISION
Gun "AV7 universal" fully fit.
Sign in service "1-/11. (Button with painted upper corner). TV must be turned on and display a feed.
Recommended initial value: V.AMP-027. V.LIN-038. S.COR-020. V.POS-023. H.POS-041.H.AMP-022. P.TILT-013. P.AMP-024. P.CORN-007. GREEN-032. RED-032. BLUE-032. V.BRE-005. LUM.DEL-000. AUDIO-032.OPBYT1-002. OPBYT2-064. OPBYT3-000. PRLOSK-000. RESERVE-000. Writing in memory - click "E".
Memory 24c08 can put a clean, turn on TV it propyshe processor itself.

from electronics-planet .blogspot

Check to see if mute is on, and through the menu to see is sap is on. Sometimes button are accidentaly pressed. If none of the above, the ntry replaceing your main board.

It can be adjusted only through service menu. Code to open the menu will be available to the authorized service provider. You have contact them.