Technical description and composition of the LG DM2352D TV, panel type and applicable modules. The composition of the modules.LG LED
Model: DM2352D
Chassis / Version: LD02M
Panel: LM230WFA
T-CON: LM230WF3-SLE1 Fixed; SM4041, DA1211, TL2349EP
LED driver (backlight): integrated into MainBoard
PWM LED driver: DT1641S
Power Supply (PSU): Adapter 19V 2.5A
MainBoard: EAX64559003 (1.0)
IC MainBoard: LGE2111A-T8, APGA1920, H27U1G8F2, 25Q80BVSIG, ATML H208 2EC, H5TQ1G63DFR, DT1641S, MP1584EN, TJ4220G, LCX244, SN324, NTP7500L
Tuner: TDSS-G101D EBL61060001
Control: AKB73655821
Technical Specifications DM2352D
LG DM2352D
General repair guidelines for TV LCD LED
Malfunctions of the adapter 19V 2.5A power supply module can be expressed in different ways, for example, LG DM2352D does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the rectifier bridge of the mains voltage and the power key (s) of the converter. The complete inoperability of the power supply unit can be caused by a short circuit in the power elements in the primary circuit, followed by an open fuse, or a short circuit in the loads.
If the power keys of the pulse converter are not equal, you should pay attention to other elements in their bundling, which may be the result or cause of their breakdown.
If the LG DM2352D TV does not have an image, but there is sound, a malfunction in the backlight circuits of the LM230WFA LED panel is likely.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
In cases of attempts to repair the motherboard EAX64559003 (1.0), it is necessary to check the operation of linear stabilizers and power converters of its microcircuits and, if possible, update the software (software). BGA chips can sometimes be diagnosed with local heating.
In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - LGE2111A-T8, APGA1920, H27U1G8F2, 25Q80BVSIG, ATML H208 2EC, H5TQ1G63DFR, DT1641S, MP1584EN, TJ4220G, LCX244, SN324, new or NTP. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before changing the tuner TDSS-G101D EBL61060001, if it is not possible to tune to television channels, make sure that there are supply voltages that need to be measured on the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Attention to the owners! Attempts at self-repair of the LG DM2352D TV are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATIC diagram ----------------> LG CHASSIS LD02M MODEL: DM2352D, DM2352D-PZN, DM2352D-PRN
To reduce the backlight current in LED drivers with a DT1641AS controller (DT1641S), you can increase the total resistance of the resistors from pin 7 (RISET) to the chassis. The exact proportional dependence may not be observed if there is additional control on this input, then the ratings should be selected empirically.
More details on this page
The appearance of the MainBoard EAX64559003 is shown in the figure below:EAX64559003
Main features of the device LG DM2352D:
Installed matrix (LED-panel) LM230WFA.
The matrix control uses the Timing Controller (T-CON) LM230WF3-SLE1.
To power the backlight LEDs, a converter is used, combined with the EAX64559003 main board, controlled by the DT1641S PWM controller.
To power all the internal components of the LG DM2352D TV, an external adapter type 19V 2.5A is used.
MainBoard - the main board (motherboard) is an EAX64559003 module, using the LGE2111A-T8, APGA1920, H27U1G8F2, 25Q80BVSIG, ATML H208 2EC, H5TQ1G63DFR, DT1641S, MP1584EN, TJ4220G324, LC4, LC4, LC4, and other chips.
Tuner TDSS-G101D EBL61060001 provides the reception of television programs and tuning to channels.
Information from an alternative source:
LG DM2352D-PZM Chassis LD02M
Panel Type (Matrix): LM230WFA
Motherboard: EAX64559003 (1.0), LGE2111A-T8 APGA1920, H27U1G8F2 sticker (6139502 2000FE34), 25Q80BVSIG, ATML H208 2EC, H5TQ1G63DFR x2, DT1641S, MP1584EN, TJ422001, LTL4016L, TDJ4012F6, LC, LTL4016106L, LTL4016106FL, LTL2106106FG, LC1606106GL, LTL2106FG,
T-con: LM230WF3-SLE1 Not removable, SM4041 DA1211, TL2349EP
Remote control: AKB73655821, POWER: DC 19V 2.5A,
Additional technical information about the panel:
Brand: LG Display
Model: LM230WFA-SLZ3
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.0 inch
Resolution: 1920x1080, FHD
Display Mode: e-IPS, Normally Black, Transmissive
Active Area: 509.184x286.416 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 14 (G to G)
Frequency: 60Hz
Lamp Type: 17S2P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
