Technical description and composition of the SAMSUNG LE32A430T1 TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE32A430T1
Chassis / Version: CN04
Panel: V315B1-L01
T-CON: LVDS controller CM2681-KQ, Gamma Buffer - AS15-G
Inverter (backlight): I315B1-16A - CEM-1-97
PWM Inverter: OZ964GN - (BA2902F, BA10393)
MOSFET Inverter: AO4614
Trans Inverter: 4018L
Power Supply (PSU): BN44-00208A - PSLF171501B
PWM Power: MC33067P, FAN7530 (PFC), FSQ0365RN (Standby)
MOSFET Power: 9N50, 11N60 (PFC)
MainBoard: BN41-00982B
IC MainBoard: SiI9185CTU, MAX232EC, NTP-3100
Tuner: BN40-001116A
Technical specifications LE32A430T1
SAMSUNG LE32A430T1
General repair guidelines for TV LCD
It is advisable to start the diagnostics of a malfunction of the SAMSUNG LE32A430T1 TV, like all others, with an external examination of both external and internal elements. Sometimes, with some visible changes, you can determine the further direction of the defect search and localization of the malfunction before the start of the acquisition of oscillograms and the necessary measurements at the control points. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
In case of a power supply module malfunction, external manifestations may be different, for example, SAMSUNG LE32A430T1 does not turn on at all and there is no indication of the indicator lights on the front panel. It is advisable to start the troubleshooting of the power supply module by checking the mains fuse. If it is torn, it is necessary to check first of all the power semiconductor elements - rectifier diodes and the power switch of the converter, which are often found in breakdown conditions in such situations.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason to be looked for by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in resistors in the stabilization circuits. The PWM controller chip may also cause a breakdown of the power switch of the converter.
It is somewhat more difficult to look for a malfunction in the converter of the power module with an active KKM (power factor corrector).
If the SAMSUNG LE32A430T1 TV does not have an image, but there is sound, the malfunction should be sought in the power converter of the backlight (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply) for an overstated ESR.
Diagnostics and repair of the inverter are often complicated by the organization of special protection circuits, which is necessary for fire safety and turns off the inverter in any emergency situation, for example, when the lamps are worn or depressurized. Often, to block a defect, it needs to be locked.
In such cases, the risk of failure of the power elements of the inverter is most likely, and special care is required during work, and after their completion, it is necessary to restore the protection circuit for further safe operation of the TV by the owner in normal mode.
Owners of the LE32A430T1 TV are recommended for repairing contact only qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
One of the typical defects of a SAMSUNG LE32A430T1 TV can occur in the V315B1-L01.
External manifestations: color distortion in the image as a negative in the image, light tones predominate. Usually in such cases, the AS15-G gamma corrector is faulty. Another indicator of its malfunction is an excessively strong heating, which in practice allows you to do without measuring the voltage gradations of gray.
In most cases, replacing the AS15-G solves the problem.
It should be remembered that similar symptoms can cause faults in the column drivers of the panel, which is usually indicated by interference in the form of even vertical stripes on the screen. Then, after replacing the AS15-G, the situation does not change. Drivers are in loops and cannot be replaced. In this case, it is necessary to replace the glass panel.
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).
PSU Advanced
The power module BN44-00208A is made using a Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced into the power supply by the device. The PFC assembly is a Step-Up Converter based on a FAN7530 PWM controller that evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of the increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the SAMSUNG LE32A430T1 device:
Installed matrix (LCD panel) V315B1-L01.
The matrix control uses the Timing Controller (T-CON) LVDS.
To power the backlight, an inverter I315B1-16A is used, it is controlled by the PWM controller OZ964GN - (BA2902F, BA10393). The transformer 4018L is installed in the inverter converter. As power elements of the inverter, keys of the type AO4614 are used.
The necessary supply voltages for all nodes of the SAMSUNG LE32A430T1 TV are generated by the BN44-00208A power supply module or its analogs using microcircuits MC33067P, FAN7530 (PFC), FSQ0365RN (Standby) and power switches of the type 9N50, 11N60 (PFC).
MainBoard - the main board (motherboard) is a BN41-00982B module, using SiI9185CTU, MAX232EC, NTP-3100 chips, and others.
The tuner BN40-001116A provides the reception of television programs and tuning to channels.
Information from an alternative source:
SAMSUNG LE32A430T1 Version SQ09 Chassis GTN32SE
Panel Type (Matrix): LTF320AA01
Motherboard: BN41-00982B BN94-02630B, SDP72, SII9185CTU, MAX232EC 91A8F6T, Tuner: HTM2-6L2 / 235S BN40-00116A
T-con: 320AA05C2LV0.0, LMX4122TO, EM636165TS-6G
Invertor: SSI320A12 REV0.1, OZ9966SN, A393F
PSU: BN44-00213A, MC33067P, A6159
Remote control: BN59-00685A, Schematic BN44-00213A,,
Additional technical information about the panel:
Brand: CMO
Model: V315B1-L01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
