Technical description and composition of the SAMSUNG UE32H4290AU TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32H4290AU UE32H4290
Chassis / Version: CD01
Panel: HH032AGH-R2
LED backlight: 2014SVS32HD_3228_07_Rev1.3_131212, BN41-02169A (A30414A)
T-CON: ST3151A04-7
LED driver (backlight): integrated into PSU; 102V 450mA
Power Supply (PSU): BN44-00700A - L32S1_EDY
PWM Power: 3S111
MOSFET Power: K10A60W, MBRF10150CTL, KF9N25
MainBoard: BN41-02098B BN94-07148A
IC MainBoard: Nand Flash: ESMT F59L1G81A - 25TI, SPI Flash; 25Q40CLSIP, RAM: K4B2G1646Q - BCKO, AUDIO: NTP7414
Tuner: BN40-00294A
Control: IR: A30857C (BN41-01976B)
Technical Specifications UE32H4290
SAMSUNG UE32H4290AU
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32H4290AU TV does not turn on. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
Most likely in this case, the main switching power supply (IIP) BN44-00700A is faulty. It is necessary to measure the output voltages in the secondary circuits, and if they are absent, check the operability of the power switches (K10A60W, MBRF10150CTL, KF9N25) of the converters and rectifier diodes for possible breakdown (short circuit).
In case of breakdowns of semiconductors in the secondary circuits, the converter can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, as a rule, the main fuse 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 an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. The 3S111 PWM controller, in the absence of external damage and a short circuit between the terminals, is checked by replacing a known-good one.
- 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.
Failure in most such cases is detected in the nodes and backlight elements of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source. By opening the panel, each LED can be checked separately. Usually, Chinese multimeters light up a single 3-volt LED, if you connect probes in the forward direction to it. 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 BN41-02098B motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update or replace the software (software). In cases of attempts to repair the MB board (SSB), you need to check the health of its elements - Nand Flash: ESMT F59L1G81A - 25TI, SPI Flash; 25Q40CLSIP, RAM: K4B2G1646Q - BCKO, AUDIO: NTP7414 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).
Before replacing the tuner BN40-00294A, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
TV users and owners need to remember that attempts to self-repair a SAMSUNG UE32H4290AU TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
The appearance of the MainBoard BN41-02098B is shown in the figure below:BN41-02098B
BN41-02098B can be used in TVs:
SAMSUNG UE32H4270AU UE32H4270 (Panel HH032AGH-R1), SAMSUNG LT24D310ES (Panel V236BJ1-LE2), SAMSUNG UE40H5000AK (Panel CY-GH040BGLV1V), SAMSUNG UE48H5270AU UE48H5270 (Panel CY-GH048BGLV1V), SAMSUNG UE32H4290AU UE32H4290 (Panel HH032AGH-R2), SAMSUNG UE40H5290AU UE40H5290 (Panel CY-GH040BGLV1V), SAMSUNG UE40J5000AU UE40J5000 (Panel CY-JJ040BGNV2V), SAMSUNG UE40H5020 UE40H5020AK (Panel CY-GH040BGSV1V), SAMSUNG UE40J5100AU (Panel CY-GH040BGSR1V), SAMSUNG T31D310EW (Panel CY-HH032AGSV1H), SAMSUNG UE48J5000AU (Panel CY-JJ048BGEV5V), SAMSUNG UE32H5020AK (Panel CY-GH032BGLV4V), SAMSUNG UE40J5120AU (Panel CY-GH040BGSV1V), SAMSUNG LT32E310EX T32E310EX (Panel CY-GJ032BGEV1V), SAMSUNG UE40H5270 UE40H5270AU (Panel CY-GH048BGLV1V), SAMSUNG UE32J5100AK UE32J5100 (Panel CY-GH032BGSV1V), SAMSUNG UE32H5000AK UE32H5000 (Panel CY-GH032BGLV1V), SAMSUNG UE48H5000 UE48H5000AK (Panel CY-GH048CSLV1V), SAMSUNG UE32J5120AK UE32J5120 (Panel CY-GH032BGSV1V).
The appearance of the power supply
Main features of the SAMSUNG UE32H4290AU device:
Installed matrix (LED-panel) HH032AGH-R2.
The matrix control uses the Timing Controller (T-CON) ST3151A04-7.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the SAMSUNG UE32H4290AU TV are generated by the BN44-00700A power module or its analogs using 3S111 microcircuits and power switches of the type K10A60W, MBRF10150CTL, KF9N25.
MainBoard - the main board (motherboard) is a BN41-02098B module using Nand Flash chips: ESMT F59L1G81A - 25TI, SPI Flash; 25Q40CLSIP, RAM: K4B2G1646Q - BCKO, AUDIO: NTP7414 and others.
The tuner BN40-00294A provides the reception of television programs and tuning to channels.