Technical description and composition of the SAMSUNG LE26A330J1 TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE26A330J1 LE26A330
Chassis / Version: GJE26SE
Panel: V260B1-L13 // V260B1-L04
T-CON: V260B1-C04
Inverter (backlight): T87I027.09 // I260B1-12D (1260B1-12D)
Power Supply (PSU): BN44-00208B // BN44-00192B
PWM Power: MC33067P
MainBoard: BN41-00982B BN94-01759W // BN41-00982A BN94-02122E
IC MainBoard: SiI9185CTU, MAX232EC, NTP-3100
Tuner: BN40-00116A
Control: Remote: BN59-00676A, IR: BN41-00850A
Specifications LE26A330J1
SAMSUNG LE26A330J1
General repair guidelines for TV LCD
Possible malfunctions
- SAMSUNG LE26A330J1 does not turn on at all. There is no reaction to the remote control or to the control buttons from the front panel. Indicator lights do not light or flash.
Most likely, in this case, the main switching power supply (IIP) BN44-00208B is faulty. It is necessary to measure the secondary output supply voltages, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip MC33067P can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
These manifestations can be triggered by a power supply module, or by inverter defects, as well as a 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 powering the inverter, you should ring in its converter power keys for breakdown and the secondary windings of 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 BN41-00982B motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update or replace the software (software). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - SiI9185CTU, MAX232EC, NTP-3100 and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
Before changing the tuner BN40-00116A, if there is no possibility of tuning to television channels, you should make sure that there are supply voltages that must be measured at 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! Users and owners of LE26A330J1 TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.
The appearance of the MainBoard BN41-00982B is shown in the figure below:BN41-00982B
BN41-00982B can be used in TVs:
SAMSUNG LE32A330J1 (Panel T320HA01-AA), SAMSUNG LE32A430T1 (Panel V315B1-L01), Samsung Panel V260B1-L13), SAMSUNG LE37A330J1 (Panel CLAA370WA03 SJ), SAMSUNG LE26A340J3 (Panel V260B1-L13).
The appearance of the power supply
Main features of the SAMSUNG LE26A330J1 device:
Installed matrix (LCD panel) V260B1-L13 or V260B1-L04.
The matrix control uses the Timing Controller (T-CON) V260B1-C04.
To power the backlight used inverter T87I027.09.
The formation of the necessary supply voltages for all nodes of the SAMSUNG LE26A330J1 TV is carried out by the BN44-00208B power module, or its analogs using MC33067P microcircuits.
MainBoard - the main board (motherboard) is a BN41-00982B module, using SiI9185CTU, MAX232EC, NTP-3100 chips, and others.
The tuner BN40-00116A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V260B1-L13
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.2M (6-bit + FRC), CIE1931 72%
Response Time: 3/5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 5 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V