Technical description and composition of the SAMSUNG UE32EH4003 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32EH4003 UE32EH4003W
Chassis / Version: U71A
Panel: DE320AGE-V2
T-CON: HV320WX2-261; MAX17126B, NT71182MFG-100
LED driver (backlight): integrated into PSU; 112V 200mA
PWM LED driver: SLC1012C
MOSFET LED driver: FK4N20
Power Supply (PSU): BN44-00554A
PWM Power: 2S110
MOSFET Power: MDF6N60
MainBoard: BN41-01897A BN94-05848S
IC MainBoard: WT61P805, K9F1G08U0D, 25Q40BVSIP, 24C256, 24CS02, K4B2G1646G-HCH9, LVC244A, LVC245A, NTP-7412S
Tuner: BN40-00231B
Control: Remote: AA59-00602A
Technical Specifications UE32EH4003
SAMSUNG UE32EH4003
General repair guidelines for TV LCD LED
Possible malfunctions
- The SAMSUNG UE32EH4003 TV does not turn on, does not respond to the remote control and buttons on the control panel, does not light up or blink indicators.
Often in such cases, the BN44-00554A power module is faulty. It is necessary to measure its output voltages and, if they are absent, check the power switches (MDF6N60) and rectifier diodes for the probability of a short circuit in the converters.
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 key parameters. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. 2S110 PWM controllers, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, there is a reaction to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
In such cases, the most likely malfunction of the 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.
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 on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the BN41-01897A 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 some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - K9F1G08U0D, 25Q40BVSIP, 24C256, 24CS02, K4B2G1646G-HCH9, LVC244A, LVC245A, NTP-7412S with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
If a tuner BN40-00231B is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary power supply voltage levels and data exchange pulses with the processor via the I2C bus at the corresponding tuner pins.
Once again, remind users! Attempts to self-repair a TV SAMSUNG UE32EH4003 without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
SCHEMATIC MANUAL ------------> Samsung UE32EH4000 shassis U71A.
UE32EH5****, UE22ES5****, UE37EH5****, UE19ES4****, UE40EH5****, UE46EH5****, UE26EH4****, UE32EH4****
FIRMWARE FOR Weltrend WT61P805 --------------> SAMSUNG UE32EH4000 UE32EH4000W U71A
The appearance of the MainBoard BN41-01897A is shown in the figure below:BN41-01897A
BN41-01897A can be used in TVs:
SAMSUNG UE32FH4003W (Panel CY DF320AGLV1V), SAMSUNG UE39EH5003 UE39EH5003W (Panel DE390BGA-C1), SAMSUNG UE50ES6907U UE50ES6907 (Panel SE500CSA-B1), SAMSUNG UE32E3H3400.
The appearance of the power supply
Main features of the SAMSUNG UE32EH4003 device:
Installed matrix (LED panel) DE320AGE-V2.
The matrix control uses the Timing Controller (T-CON) HV320WX2-261 ;.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SLC1012C PWM controller. As the power elements of the LED driver, keys of the FK4N20 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32EH4003 TV are generated by the BN44-00554A power module or its analogs using 2S110 microcircuits and MDF6N60 type power switches.
MainBoard - the main board (motherboard) is a BN41-01897A module, using microchips WT61P805, K9F1G08U0D, 25Q40BVSIP, 24C256, 24CS02, K4B2G1646G-HCH9, LVC244A, LVC245A, NTP-7412S and others.
The tuner BN40-00231B provides the reception of television programs and tuning to channels.
