La40b530 does not turn on - Samsung LA40B530 40 in. HD-Ready TV

Turn Signal Lamps
The STOP/TURN/HAZARD fuse in the instrument panel (I/P) fuse block supplies battery positive voltage to the body control module (BCM) for the turn signal lamps. When the turn switch is placed in the LEFT TURN or RIGHT TURN position, ground is applied from G202 through the turn switch, to the turn signal switch signal circuit and to the BCM. The BCM then applies battery positive voltage to front and rear turn signal lamps supply voltage circuits. The left front turn signal lamp is grounded at G100, right front at G101, left rear at G301 and the right rear is at G302.

Turn Signal Reminder
The driver information center (DIC) activates the turn signal warning as requested by either turn signal switch. The turn signal warning sounds when the following occurs:
• The ignition is in RUN.
• The turn signal switch is in either turn position, sensing, within 1 second, an open to battery positive voltage transition in the turn signal control circuit, left or right turn.
• The vehicle has traveled a distance of 1.2 km (0.75 mi) by counting pulses in the rolling odometer class 2 message.
The DIC turns OFF the turn signal reminder when either the ignition switch is turned to the OFF position, or the turn signal switch returns to the OFF position, sensing within 1 second, no transitions from open to battery positive voltage in either of the turn signal control circuits, left turn or right turn.

My first step would be to hook up a factory scan tool an check for DTC'S - diagnostic trouble codes

DTC B3948 Left Front Turn Signal Circuit
Circuit Description
Ground is applied to the turn signal switch. When the turn signal switch is placed in the turn left position, ground is applied to the body control module (BCM) through the left turn signal switch circuit. The BCM then applies a pulsating voltage to the LF and LR turn signal lamps through the LF and LR turn signal voltage supply circuits.

What's the left rear lamp doing ? Flashing fast ?

DTC B3950 Left Rear Turn Signal Circuit

Computer ?? Turn Off ??? ???? ???? - Shut Down Computer.
????? ?????January 3, 2018 TP Staff??????
Computer ?? ??? (Shut Down) ???? ?????
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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 ???? ?? ???? ??? ????? ?? ????? ??? ???? ?????. ????, ?????? ?? ?? ?? ??? ???? ??? ?????? ??? ??.

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.

You need to give a better description of the problem. Check your connections to make sure they are tight.

The Main PCB will need to be replaced, part# depends on your model#.. ( http://www.samsungparts.com/partslist.aspx?Catalog=Parts_and_Accessories&Category=LA40B530P7R ) See Below
BN94-03079U
MAIN PCB

$116.79
Nationwide BO, Usually ships within 4-6 weeks


BN94-02930L
MAIN PCB

$116.11
More on the way, Usually ships within 3-5 business days Specification
LA40B530P7RXZN
ASSY PCB MAIN Specification
LA32B530P7RX
ASSY PCB MAIN

Download it user manual by <retrevo.com> site. It have all details.

If it has one you would have to call Samsung with the model for it and instructions.

Usually this info is only available to authorized Samsung repair shops.

That sounds like you have an aerial/signal issue.
I would check the aerial to the TV.

Its not intended for multimedia.You can only use it for firmware updates of the LCD TV

Hello,

try connecting tv to cable direct also try unplugging both converter and tv for wile like 5 mins plug both back in see if tv and converter sync, but if otherwise then
The ysus board is the most common reason.
you can try websites on ebay.com to buy parts for replacement...