Technical description and composition of the SAMSUNG UE32EH5000K TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32EH5000K UE32EH5000
Chassis / Version: U71A / TH02
Panel: LTJ320HN07-L
LED backlight: BN96-21476A 32F-3535LED-40EA D1GE-320SC1-R2
LED driver (backlight): integrated into PSU
PWM LED driver: SLC1012C (FAN7340)
Power Supply (PSU): BN44-00493B PD32AVF_CHS
PWM Power: SSC2S110
MainBoard: BN41-01795A BN94-05842D
IC MainBoard: WT61P805, K4B1G1646G-BCH9, 24C256C4VCX, 25Q40BVSIP
Tuner: BN40-00231A DT0D40FVL084AA
Appearance
SAMSUNG UE32EH5000K
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE32EH5000K TV does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
Most often, with such manifestations, the main power module BN44-00493B is found to be faulty. It is necessary to measure its output voltages, and in case of their complete absence, it is necessary to check the serviceability of power switches and rectifier diodes for the probability of short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the mains fuse and, less often, the current sensor at the source of the key are most often cut off.
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 PWM controller (PWM) SSC2S110, 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, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. 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 detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
- 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 BN41-01795A 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). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - WT61P805, K4B1G1646G-BCH9, 24C256C4VCX, 25Q40BVSIP with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Malfunction of the tuner BN40-00231A DT0D40FVL084AA is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Attention TV owners! Attempts to self-repair SAMSUNG UE32EH5000K are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATICS ----------- > Samsung UE32EH5000 shassis U71A, U71B.
UE32EH5****, UE22ES5****, UE37EH5**** UE19ES4****, UE40EH5****, UE46EH5****, UE26EH4****, UE32EH4****
PSU SCHEMATIC Samsung -------------> BN44-00493B Power supply
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 UE32EH5000K device:
Installed matrix (LED panel) LTJ320HN07-L.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the PLC controller SLC1012C (FAN7340).
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE32EH5000K TV is carried out by the BN44-00493B power module, or its analogs using SSC2S110 microcircuits.
MainBoard - the main board (motherboard) is a BN41-01795A module, using microchips WT61P805, K4B1G1646G-BCH9, 24C256C4VCX, 25Q40BVSIP and others.
The tuner BN40-00231A DT0D40FVL084AA provides the reception of television programs and tuning to channels.