Technical description and composition of the SAMSUNG UE55D8000YS TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE55D8000YS UE55D8000
Chassis / Version: H303
Panel: LTJ550HQ11-L
T-CON: S240LABMB3 BN41-01663A BN95-00501B
LED driver (backlight): integrated into PSU
PWM LED driver: SLC5012M (MAP3312B), SLC9012M (MAP9101)
Power Supply (PSU): BN44-00428A PD55B2_BSM
PWM Power: SPC7011F (FA5695N), STR2A153D, UCC25600
MainBoard: BN41-01622C BN94-04420W
IC MainBoard: SDP1002, SDP94, SIL9489ACTUC, K4B2G1646C-HCH9, WT61P805
Tuner: BN40-00217B TDHZ3-K01A
Technical Specifications UE55D8000
SAMSUNG UE55D8000YS
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE55D8000YS does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
With such manifestations, in some cases, the BN44-00428A power module is faulty. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches and rectifier diodes for a probable short circuit. First of all, you should pay attention to the power converter of the TV in standby mode, implemented on the PWM controller STR2A153D.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode, or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers SPC7011F (FA5695N), STR2A153D, UCC25600, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new, or obviously working.
- 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.
In such cases, the most likely malfunction of the LED backlight elements. The reason can be both in the power of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
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 BN41-01622C 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). If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - SDP1002, SDP94, SIL9489ACTUC, K4B2G1646C-HCH9, WT61P805. Defective components should be replaced.
Before changing the tuner BN40-00217B TDHZ3-K01A, if it is not possible to tune to television channels, make sure that there are supply voltages that need to be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Attention TV owners! Attempts to self-repair SAMSUNG UE55D8000YS are not recommended by the manufacturer and can lead to serious negative consequences!
The appearance of the MainBoard BN41-01622C is shown in the figure below:BN41-01622C
BN41-01622C can be used in TVs:
SAMSUNG UE55D8000YS UE55D8000 (Panel LTJ550HQ11-L), SAMSUNG UE40D8000 UE40D8000YS (Panel LTJ400HL05-L).
The appearance of the power supply
Main features of the SAMSUNG UE55D8000YS device:
Installed matrix (LED-panel) LTJ550HQ11-L.
The matrix control uses the Timing Controller (T-CON) S240LABMB3.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by a PWM controller SLC5012M (MAP3312B), SLC9012M (MAP9101).
The necessary supply voltages for all nodes of the SAMSUNG UE55D8000YS TV are generated by the power module BN44-00428A, or its analogs using microchips SPC7011F (FA5695N), STR2A153D, UCC25600.
MainBoard - the main board (motherboard) is a module BN41-01622C, using microchips SDP1002, SDP94, SIL9489ACTUC, K4B2G1646C-HCH9, WT61P805 and others.
The tuner BN40-00217B TDHZ3-K01A provides the reception of television programs and tuning to channels.
