Technical description and composition of the SAMSUNG UE24H4080 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE24H4080 UE24H4080AU
Chassis / Version: CP02
Panel: V236BJ1-LE2 Rev. C7
LED backlight: 6202B0005S300
T-CON: 6B01M0018F00R
LED driver (backlight): integrated into PSU; 35-55V 200mA
PWM LED driver: BD93941FP
MOSFET LED driver: MDD1903
Power Supply (PSU): BN44-00746C L23S0DS_EPN
PWM Power: SSC3S111
MOSFET Power: 60R580P (8N60)
MainBoard: BN41-02251A BN94-07150Y
IC MainBoard: K482G1646Q-BCK0, 25Q40, DRV612
Tuner: BN40-00293A
Control: Remote: AA59-00796A
Technical Specifications UE24H4080
SAMSUNG UE24H4080
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE24H4080 TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
With such manifestations, in some cases, the BN44-00746C power module is faulty. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (8N60) and rectifier diodes in the converters for a short circuit.
In the event of a breakdown in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the main fuse or current sensor at the source of the key most often breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM SSC3S111 microcircuits are usually checked by replacement with new ones, or obviously working.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
The most likely in these cases is a malfunction of the LED backlight. More often the reason for this is the breakdown of the LEDs, or poor contact in the connectors of the strips, less often the LED driver may be malfunctioning.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Usually, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as a health indicator. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN41-02251A 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). In cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - K482G1646Q-BCK0, 25Q40, DRV612 which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
If there is no reception of television channels, but the TV is working properly from external devices, first of all, check the voltage of the tuner BN40-00293A and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
TV users and owners need to remember that attempts to self-repair a SAMSUNG UE24H4080 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
The appearance of the MainBoard BN41-02251A is shown in the figure below:BN41-02251A
BN41-02251A can be used in TVs:
SAMSUNG UE24H4070 UE24H4070AU (Panel V236BJ1-LE2), SAMSUNG UE24H4080 UE24H4080AU (Panel V236BJ1-LE2).
The appearance of the power supply
Main features of the SAMSUNG UE24H4080 device:
Installed matrix (LED panel) V236BJ1-LE2 Rev. C7.
The matrix control uses the Timing Controller (T-CON) 6B01M0018F00R.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the BD93941FP PWM controller. As power elements of the LED driver, keys of the MDD1903 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE24H4080 television are generated by the BN44-00746C power module or its analogs using SSC3S111 microcircuits and power switches of the 60R580P (8N60) type.
MainBoard - the main board (motherboard) is a BN41-02251A module, using K482G1646Q-BCK0, 25Q40, DRV612 and others.
The tuner BN40-00293A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V236BJ1-LE2
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.6 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 521.471x293.184 mm
Surface: Antiglare (Haze 1%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8.5 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V