Technical description and composition of the SAMSUNG UE55D6530WS TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE55D6530WS UE55D6530
Chassis / Version: H301
Panel: LTJ550HW01-L
T-CON: S240LABMB 3V0 120PLUS
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00457A HU10123-10023A
PWM Power: FSFR1800USL
MainBoard: BN41-01683A BN94-04726R
IC MainBoard: SDP1001, SDP94
Tuner: BN40-00288A
Technical Specifications UE55D6530
SAMSUNG UE55D6530WS
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE55D6530WS TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
With such manifestations, in some cases, the BN44-00457A power supply module may be faulty. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches and rectifier diodes in the converters for possible breakdown.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke the excess of maximum current or voltage values. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controller (PWM) FSFR1800USL, in the absence of external damage and short circuit between the terminals, is checked by replacement.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
As a rule, in such cases there is no display backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the BN41-01683A motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard - SDP1001, SDP94. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If the TV works normally from external devices, but does not tune into television channels, the tuner BN40-00288A may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Once again, remind users! Attempts to self-repair a TV SAMSUNG UE55D6530WS without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
The appearance of the MainBoard BN41-01683A is shown in the figure below:BN41-01683A
The appearance of the power supply
Main features of the SAMSUNG UE55D6530WS device:
The matrix (LED panel) LTJ550HW01-L is installed.
The matrix control uses the Timing Controller (T-CON) S240LABMB.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE55D6530WS TV is carried out by the BN44-00457A power module, or its analogs using FSFR1800USL microcircuits.
MainBoard - the main board (motherboard) is a module BN41-01683A, using microchips SDP1001, SDP94 and others.
The tuner BN40-00288A provides the reception of television programs and tuning to channels.
