Technical description and composition of the SAMSUNG UE32EH5030 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32EH5030 UE32EH5030W
Panel: LTJ320HN07-L
LED backlight: BN96-21476A 32F-3535LED-40EA D1GE-320SC1-R2
T-CON: LSJ320HN03-S BN41-01797A
LED driver (backlight): integrated into PSU
PWM LED driver: SLC1012C
MOSFET LED driver: MDD3752
Power Supply (PSU): BN44-00493B PD32AVF_CHS
PWM Power: SSC2S110
MOSFET Power: MDF11N65B
MainBoard: BN41-01795A BN94-5842D
IC MainBoard: WT61P805, EEprom: 24C256C4VCX, SPI Flash: 25Q40BVSIP, NAND: K9F1G08U0D
Tuner: BN40-00231A
Technical Specifications UE32EH5030
SAMSUNG UE32EH5030
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SAMSUNG UE32EH5030 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.
With such manifestations, in some cases, the BN44-00493B power module is faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches (MDF11N65B) and rectifier diodes for a possible partial or complete breakdown.
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 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. PWM controllers (PWM) SSC2S110, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
In some of these cases, a malfunction is caused by a lack of display backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can test each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN junction indirectly indicates a LED-a
- The TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-01795A 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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements WT61P805, EEprom: 24C256C4VCX, SPI Flash: 25Q40BVSIP, NAND: K9F1G08U0D requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
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 BN40-00231A 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 UE32EH5030 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual and schematic diagram -------------> SAMSUNG UE32EH5030 Chassis
The appearance of the MainBoard BN41-01795A is shown in the figure below:BN41-01795A
BN41-01795A can be used in TVs:
SAMSUNG UE32EH4000 UE32EH4000W (Panel LTJ320AP03-L), SAMSUNG UE32EH5000W (Panel DE320BGM-C1), SAMSUNG UE26EH4000W (Panel T260XVN01.1), SAMSUNG UE32EH5007K UE32EH5007 (Panel LTJ320HN07-L), SAMSUNG UE32EH5047K UE32EH5047 (Panel DE320BGA-B1), SAMSUNG UE40EH5007K (Panel CY-DE400BGSV1L), SAMSUNG UE32EH5057K (Panel DE320BGA-B1), SAMSUNG UE40FH5007K (Panel CY-DF400BGLV1V), SAMSUNG UE40EH5047K (Panel LTJ400HM08-L), SAMSUNG UE40EH5057K UE40EH5057 (Panel CY-DE400BGSV1L), SAMSUNG UE40EH5050W UE40EH5050 (Panel CY -DE400BGSV1L), SAMSUNG UE40EH5000 UE40EH5000W (Panel LTJ400HM801-V), SAMSUNG UE32EH5000K UE32EH5000 (Panel LTJ320HN07-L), SAMSUNG UE32EH5000W UE32EH5000 (Panel DE320BGM-C1), SAMSUNG LE32E420E2W LE32E420 (Panel LTF320AP13), SAMSUNG UE32EH4030 UE32EH4030W (Panel DE320AGH-C2 ), SAMSUNG UE46EH5057K UE46EH5057 (Panel LTJ460HN05-L), SAMSUNG UE40EH5040 UE40EH5040W (Panel CY-DE400BGSV1L).
The appearance of the power supply
Main features of the SAMSUNG UE32EH5030 device:
Installed matrix (LED panel) LTJ320HN07-L.
The matrix control uses the Timing Controller (T-CON) LSJ320HN03-S.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SLC1012C PWM controller. As power elements of the LED driver, keys of the MDD3752 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32EH5030 TV are generated by the BN44-00493B power module or its analogs using SSC2S110 microcircuits and MDF11N65B type power switches.
MainBoard - the main board (motherboard) is a BN41-01795A module using WT61P805 chips, EEprom: 24C256C4VCX, SPI Flash: 25Q40BVSIP, NAND: K9F1G08U0D and others.
The tuner BN40-00231A provides the reception of television programs and tuning to channels.
