Technical description and composition of the SAMSUNG UE32F4800AW TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32F4800AW UE32F4800
Chassis / Version: US03
Panel: CY-HF320AGLV2V
LED backlight: 2013SVS32H 9 REV1.8 130103
T-CON: 13Y_32AN01S4LV0.1; LAXC021T2B-Q1, RT6906B, I7987
LED driver (backlight): integrated into PSU; 154V 240mA
PWM LED driver: SEM5027A
MOSFET LED driver: D9N40
Power Supply (PSU): BN44-00608A PSLF880S05A L32SSM_DSM
PWM Power: S3310 = NCP1200D6, A358F
MOSFET Power: 08N80C3, 9NM60N
MainBoard: BN41-01955A BN94-06173C
IC MainBoard: SEMS29, S24C256C, K4B1G1646G-BCK0, TP-7412S
Tuner: BN40-00256A
Control: IR: BN41-01976B UF5000 / 1.2T
Technical Specifications UE32F4800
SAMSUNG UE32F4800AW
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE32F4800AW 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.
In such cases, the fault should be sought first in the BN44-00608A power supply module. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches (08N80C3, 9NM60N) and rectifier diodes of the converters for possible short circuit.
In the event of breakdowns 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 mains 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 chips S3310 = NCP1200D6, A358F are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
Often in such cases, there is no LED 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 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. Typically, 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 BN41-01955A 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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - SEMS29, S24C256C, K4B1G1646G-BCK0, TP-7412S and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
Before replacing the tuner BN40-00256A, 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
We recommend the owners of the UE32F4800AW TV for repair only to qualified specialists with the necessary work experience! Attempts to repair it yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
The appearance of the MainBoard BN41-01955A is shown in the figure below:
BN41-01955A
BN41-01955A can be used in TVs:
SAMSUNG UE32F5000AK (Panel CY-HF320BGSV1V), SAMSUNG UE32F5020AK (Panel T320HVF03.0), SAMSUNG UE42F5000AK UE42F5000 (Panel HF420BGA-B1), SAMSUNG UE46F5000AK UE46F5000 (Panel CY-HF460BGLV1V), SAMSUNG UE32F4800AW UE32F4800 (Panel CY-HF320AGLV2V).
The appearance of the power supply
Main features of the SAMSUNG UE32F4800AW device:
Installed matrix (LED-panel) CY-HF320AGLV2V.
The matrix control uses the Timing Controller (T-CON) 13Y_32AN01S4LV0.1 ;.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the SEM5027A PWM controller. As power elements of the LED driver, keys of the D9N40 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32F4800AW TV are generated by the BN44-00608A power module or its analogs using S3310 = NCP1200D6, A358F microchips and power switches of the 08N80C3, 9NM60N type.
MainBoard - the main board (motherboard) is a BN41-01955A module, using microchips SEMS29, S24C256C, K4B1G1646G-BCK0, TP-7412S and others.
The tuner BN40-00256A provides the reception of television programs and tuning to channels.
