Technical description and composition of the SAMSUNG UE32F4000AW TV, panel type and applicable modules. The composition of the modules.Samsung LED
Model: UE32F4000AW
Chassis / Version: TD03
Panel: CY-HF320AGLV1V
LED backlight: D2GE-320SC0-R3 (12,12,27), BN96-26715A (BN41-02018A)
T-CON: SHARP DUNTK5414TP
LED driver (backlight): with integrated PSU
PWM LED driver: BD8174MU
Power Supply (PSU): BN44-00604B L32S0_DDY
PWM Power: 2S110
MainBoard: BN41-01955B - BN94-06780B
IC MainBoard: SEMS29, W25Q40BL, 325 K9F1G08U0D, 24C256, NTP7412S
Tuner: DT0540EIH035A
Control: IR: A26402B (BN41-01976B)
Technical Specifications UE32F4000
SAMSUNG UE32F4000AW
General repair guidelines for TV LCD LED
Repair of the Samsung UE32F4000AW TV should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. In some cases, visible external damage to the elements can suggest the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of electronic circuit nodes. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the solders of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction that has arisen, as well as to check the connected elements and assemblies.
Sometimes the Samsung UE32F4000AW TV just doesn’t turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the common power module BN44 - 00604B L32S0_DDY. If it is working properly, you need to check the processor batteries on the SSB (Main Board). When diagnosing and repairing the power supply, first of all, replace the swollen filter capacitors of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
Sometimes the Samsung UE32F4000AW TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the CY-HF320AGLV1V backlight LED converter, or an open circuit in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including the power supply unit (power supply unit).
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
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.
On the BN41-01955 motherboard, in case of a malfunction, you should first check the performance of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements SEMS29, W25Q40BL, 325 K9F1G08U0D, 24C256, NTP7412S. BGA chip malfunctions are usually easy to detect by warming up.
The malfunction of the tuner DT0540EIH035A is established after checking the software and all the supply voltages at its terminals, including the varicap supply voltage (30-33V).
Attention to the owners! Attempts to self-repair the Samsung UE32F4000AW TV are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATIC ------------->>> Chassis: U85B, U85C. Models: UE**F5000A*, UE32F4800AW, UE**F5005AK, UE**F5020AK, UE**F5070SS, UE32F40**AW
FOR TYPE SAMSUNG UE32F4000AW VER: RD05; Panel: HF320AGH-R1;
Main: BN41-01955B BN94-06778X; PSU BN44-00604B;
Led Backlight 2013SVS32H 9 REV1.8 130103, BN96-26715A (BN41-02018A);
IR: A26402B (BN41-01976B)
The appearance of the MainBoard BN41-01955B is shown in the figure below:BN41-01955B
BN41-01955B can be used in TVs:
Samsung UE32F4000AW (Panel CY-HF320AGLV1V), SAMSUNG UE32F4020AW (Panel CY-HF320AGLV1V), SAMSUNG UE39F5020AK (Panel CY-HF390BGMV1V), SAMSUNG UE39F5000AK UE39F53V (Panel).
The appearance of the power supply
Main features of the SAMSUNG UE32F4000AW device:
Installed matrix (LED-panel) CY-HF320AGLV1V.
The matrix control uses the Timing Controller (T-CON) SHARP.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the BD8174MU PWM controller.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE32F4000AW TV is carried out by the BN44-00604B power module, or its analogs using 2S110 microcircuits.
MainBoard - the main board (motherboard) is a BN41-01955B module, using microchips SEMS29, W25Q40BL, 325 K9F1G08U0D, 24C256, NTP7412S and others.
The tuner DT0540EIH035A provides the reception of television programs and tuning to channels.