SAMSUNG
Model: LE23R82B
Panel: T230XW01 V.1 // LTA230W2-L01
Lamp backlight: 8 Lamp CCFL
T-CON: T230XW01 V1
Inverter (backlight): V225-001
PWM Inverter: OZ964SN
Power Supply (PSU): BN44-00158A SMA23-P
PWM Power: VIPer12A (Standby), TDA4863 (PFC), F9222L (PWM)
MainBoard: BN41-00878A BN94-01184Q
IC MainBoard: MT8293AE, WT61P6S, SDP64, MT8291E, NTP3000
Tuner: HTM6C / 235S
Technical Specifications LE23R82B
SAMSUNG LE23R82B
General repair guidelines for TV LCD
Possible malfunctions
- SAMSUNG LE23R82B does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
In such cases, the fault should be sought first in the BN44-00158A power supply module. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches and rectifier diodes in the converters for possible 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) VIPer12A (Standby), TDA4863 (PFC), F9222L (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, the screen is black, there is sound, with external illumination of the screen, you can sometimes see barely noticeable outlines of the image.
These manifestations can be triggered by a power supply module, or by inverter defects, as well as distortion of the currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, it is necessary to ring in its converter the power switches for breakdown and the secondary windings of the transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the BN41-00878A motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - MT8293AE, WT61P6S, SDP64, MT8291E, NTP3000 which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
If you suspect a malfunction of the HTM6C / 235S tuner, first of all, you need to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
It should be remembered! Attempts to self-repair a SAMSUNG LE23R82B TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device............
The appearance of the MainBoard BN41-00878A is shown in the figure below:
BN41-00878A
BN41-00878A can be used in TVs:
SAMSUNG LE26R81BX LE26R81B LE26R81BS (Panel T260XW02 V.5), SAMSUNG LE26S81BS (Panel V260B1-L04 Rev. C1), SAMSUNG LE32S81B (Panel T315XW02), SAMSUNG LE32S81B (Panel V315B1-L01381, LT01301, LT01BC, Rev. SAMSUNG LE46S81B (Panel LTA460WT-L15 0T1), SAMSUNG LE46S81B (Panel LTA460WT-L15), SAMSUNG LE23R81W (Panel T230XW01 V.1), SAMSUNG LE26R82B (Panel T260XW02 V.5), SAMSUNG LE231XB01BW1B231BWBB81B23B81B23B81B23B81B23BX1B231
The appearance of the power supply
Main features of the SAMSUNG LE23R82B device:
Installed matrix (LCD panel) T230XW01 V.1 or LTA230W2-L01.
The matrix control uses the Timing Controller (T-CON) T230XW01.
To power the backlight, an inverter V225-001 is used, it is controlled by the PWM controller OZ964SN.
The necessary supply voltages for all nodes of the SAMSUNG LE23R82B TV are generated by the BN44-00158A power module or its analogs using VIPer12A (Standby), TDA4863 (PFC), F9222L (PWM) microcircuits.
MainBoard - the main board (motherboard) is a BN41-00878A module, using chips MT8293AE, WT61P6S, SDP64, MT8291E, NTP3000 and others.
The HTM6C / 235S tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T230XW01 V1
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.0 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 508.152x285.696 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 700: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 7/1 (Tr / Td)
Frequency: 60Hz
Lamp Type: 8 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
