Sled2453w will not turn on

Computer ?? Turn Off ??? ???? ???? - Shut Down Computer.
????? ?????January 3, 2018 TP Staff??????
Computer ?? ??? (Shut Down) ???? ?????
?? Computer ?? ???? ????? ?? ???? ?? ?? ?? ??? ??? ?? ??? Computer ?? ???? ???? ????? ??, ?? ??? ?? ???? ??? ?? ?? Computer ?? Turn Off ???? ????? ??. ???? Computer ?? ???-??? ?? ???? ???? ?? ?????. Computer ?? Shut Down ???? ?? ????? Computer ???????? ???? ??. Computer ?? ????? data ?????? (Save) ???? ?? ?? Computer ?? Turn Off ???? ?? ????? ?? ?? ??? ???? ??. ???? ??? ???? Computer ?? Turn Off ???? ???? ??. ?? ???? ?? ?? ???? Computer ?? Turn Off ???? ??.
???:Computer ?? Turn Off ???? ?? ???? ?? ????? ?? ????? ???? ?????.
1. Computer ?? Turn Off ???? ?? ???? ?? ????????? ?? ?? ?? ???? ????? ???? ??? ??? ?? save ?? ??? ??. ???, ??? ??? ???? ?? ?? ??? ?? ???? ??.
2. ?? ??? program ?? ????? ?? ??? ?? ?????? ?? Computer ?? Turn Off ???? ?? ???? ??? ?? ???? ?????.
3. ???, ???? ??? disk ???? ??? ?? ?? ??? ?? Computer ?? Turn Off ???? ?? ????? ????? ?? ???????? ??? ?? ?? ???.
?? ?? Computer ?? Turn Off ???? ?? ??? ??????? ????? ??. ?? ??? ??? Computer ?? Turn Off, ??? Shut Down ???? ?? ???? ??, ?? ????? ?? ???? ???????. ?? ???? Computer ?? Turn Off ???? ??.
??? ?? ????: Computer ?? ???? (Start) ???? ???? ???
Computer ?? ??? ???? ?? ???????
???? 1.
1. "Windows Start Button" ?? ????? ????. ?? ??? ??-????? ?? "Windows logo key" ????.
2. Start Button ?? ?? ????? ???? ?? Start Menu ??? ???? ??.
3. ??? Start Menu ?? "Shut Down Button" ?? ????. ?? ???? Start Menu ??? ????? ?? ???? ??????.
4. Shut Down Button ??? ?? ??? ???? ??, ???? Shut Down ?? ????? Arrow. ?? ?? ???? ???? ??? ?? ????? ???? ?? ?? ????? Computer Shut Down ?? ?????.
5. ???, ?? Arrow ?? ????? ??????? ?? ???? ????? Shut Down Button ?? ????? ??? ?????. ????? Computer ?? Turn Off ???? ?? ??????? ??? ?? ??? ???? ??.
???? 2.
?? ?? Keyboard ?? ?????? ?? Computer ?? Turn Off ???????. ?? ??? ??? ????? ?? ??? ??. ?????, ???? Computer ?? Turn Off ???? ??? ??? ?? ??? ???? ??. ?? ????? ??? ?????? ??? ?? ???? Computer ?? Turn Off ?? ???? ??. ?? ??? ?? ????? ?? Computer ?? Shut Down ???? ??.
1. ???? ???? ??-????? ??Alt + F4?? ??? ?????.
2. ?? ??????? ?? ????? ?? ????? ?????? Shut Down Window ????? ????? ??? ??.
3. ?? ???? Shut Down Window ?? Drop Down List ?? ????? ??. ???? ??? ?? Arrow ?? ????? ????.
4. ?? ???? Drop Down List ?? Shut Down ?????? ?? ????? ???? ?? ???? ?? select ?? ???.
5. ???? ??? ??-????? ??Enter????? ?? ???? Computer Shut Down ?? ?????.
???? 3.
?? ????? ???? ???? ?? ??????? ??? ??. ?????, ?? ????? ?? Computer ?? ??? ?? Turn Off ??? ???? ?????. ????, ????? ???????? ????? ??. ????? ?? ????? ?? ???? ????? ?? ??? ??.
1.???? CPU, ???? Case ?? ???? ???, ?? Power Button ?? ????? ?? ???? Computer Shut Down ?? ?????
???? ???? ?????
??, ?? Computer ?? Turn Off ???? ?? ???? ??? ????? ?? ?????? ?? ???? ??. ???? ???? ?? ???? ?? Computer ?? ??? ?????? Turn Off ???? ?????. ?? Computer ?? Turn Off ???? ?? ???? ??? ????? ?? ????? ??? ???? ?????. ????, ?????? ?? ?? ?? ??? ???? ??? ?????? ??? ??.

Do you have a multi meter and able to take some voltage readings?

What fuse are you pulling ?

Hazard Lamps
The hazard warning switch is part of the turn signal switch. The turn signal switch receives battery voltage at all times through the HAZARD SWITCH Fuse. When the hazard switch is placed in the HAZARD position, battery voltage is applied to the hazard lamp/turn signal lamp flasher. The hazard lamp/turn signal lamp flasher sends a turn signal flasher signal to the turn signal switch. The turn signal switch provides all of the turn lamps and turn indicators with the turn signal flasher signal, simultaneously flashing them on and off.

Turn Signal Lamps
The front turn signal lamps are made up of the front park/turn signal lamps and rear turn signal lamps. The front turn signal lamps flash with the rear turn signal lamps when a turn is initiated using the turn signal/multifunction lever. The turn signals will operate only with the ignition switch in the RUN position and will not operate during hazard flasher operation.
When the ignition is turned to the RUN position, battery voltage is supplied to the TURN SIGNAL Fuse. Battery voltage is then applied through the turn signal fuse circuit to the turn signal switch. When the turn signal switch is placed in the LH or RH position, voltage is supplied to the hazard lamp/turn signal lamp flasher. The hazard lamp/turn signal lamp flasher supplies a turn signal flasher signal to the turn signal switch. With the turn signal switch in the LH or RH position the corresponding turn signal indicator, rear turn signal, and front turn signal receive the turn signal switch signal and will flash. The front turn signals receive the turn signal switch signal from the turn signal switch via the BCM. The turn lamps are permanently grounded.

Replace the turn signal switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column - Tilt.

The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Try emailing this useless company Sansui Products Downloads Support

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Firmware update procdure to many popular brand TVs and others are givne.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

That might be the possible resolution the TV can recevie. Nothing more can be done.