Technical description and composition of the SAMSUNG LE32A330J1 TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE32A330J1
Chassis / Version: (LE7)
Panel: T320HA01-AA // LTF320AA01
T-CON: // 32AA05C2
Inverter (backlight): T78I029.14 CEM-1-97 E74060 INV32S12S
PWM Inverter: OZ964GN (20) 10393 (8) BA2902F (14) // OZ9966SN
MOSFET Inverter: AO4614 (8) // STU4325
Trans Inverter: LT-32VE TMP 0908CDY
Power Supply (PSU): BN44-00213A
PWM Power: A6159 (Standby), MC33067P (PWM 16 pin), TDA4863G (PFC), LM2576T-ADJ
MainBoard: BN41-00982B model450
IC MainBoard: SiI9185CTU NTP-3100 MAX232EC
Tuner: HTM2-6L2 / 235S BN40-001116A
SAMSUNG
Model: LE32A330J1
Chassis / Version: LE32A330
Panel: V315B1-L01 REV.C4, C5
T-CON: V315B1-C01 5V, 3120 84D1Z (8), CM2681A-KQ, 24LC128I (8), Gamma Buffer - AS15-G
Inverter (backlight): I315B1-16A
PWM Inverter: OZ964GN (20), BA2902F (14)
MOSFET Inverter: AO4614 (8)
Trans Inverter: 4018L 0819A2
Power Supply (PSU): BN44-00191B, BN44-00192B
PWM Power: FAN7530 (PFC), MC33067P (PWM 16 pin), FSQ0165RN (Standby)
MOSFET Power: 11N60, FQPF9N50CF
MainBoard: BN41-00982A
IC MainBoard: CPU: SAMS01; DRAM: EM6A9160TSOA-5G; SPI Flash: MX25L1605AM2I-12G; EEPROM: 24C256;
Tuner: HTM2-6 / 235S
Control: BN59-00609A
Technical Specifications LE32A330J1
SAMSUNG LE32A330J1
General repair guidelines for TV LCD
Any repair of electronic equipment begins with a careful external inspection of the device and troubleshooting. In this case, you should carefully examine all the elements of the SAMSUNG LE32A330J1 TV, both internal and external. Sometimes, for some visible changes, you can determine the further direction of the defect search and localization of the malfunction before the start of taking the oscillograms and making the necessary measurements at the control points. Ring cracks in the soldering of the leads of the elements, deformed electrolytic capacitors, charred resistors - all this for the repairman can be a hint in assumptions about the causes and consequences of the malfunction.
In the case when the LE32A330J1 does not turn on, does not respond to the remote control and the front panel buttons, does not blink light bulbs and does not show any signs of operability, most likely in this case the power module BN44-00191B, BN44-00192B is faulty. When diagnosing and repairing the power supply, first of all, it is necessary to check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes or power switch 11N60.
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 MC33067P (16), Q0165R (8) //, A6159 (8) can also cause a breakdown of the power switch of the converter.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
If SAMSUNG LE32A330J1 does not have an image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Repairing the I315B1-16A inverter is complicated by the fact that in case of any malfunction or emergency, even if the lamps are unevenly worn, protection is triggered, which turns it off for fire safety purposes. Diagnostics become impossible and protection needs to be disabled.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
When trying to repair the BN41-00982A motherboard, you should first check the serviceability of the linear stabilizers or power converters of the microcircuits and, if necessary, update the software (software). If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - 3BDA0 (6) SiI9185CTU, NTP-3100 MAX232EC. Defective components should be replaced.
It should be remembered! Attempts to repair the SAMSUNG LE32A330J1 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!
One of the typical defects of the SAMSUNG LE32A330J1 TV can occur in the V315B1-L01 REV.C4, C5 panel.
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.
MainBoard BN41-00982A view is shown in the figure below:BN41-00982A
BN41-00982A can be used in TVs:
SAMSUNG LE32A330J1 (Panel V315B1-L01 REV.C4 C5), SAMSUNG LE37A430T1 (Panel T370XW02 VC), SAMSUNG LE40A330J1 (Panel T400XW01 V.5), SAMSUNG 37A330J1 (Panel T370XW02 VG01, SAM30, V30, TGV40, SAM30, TGV4, VG, V30, VG, VG, V30, VG, V30) LE26A330J1 LE26A330 (Panel V260B1-L13).
PSU Advanced
The LE32A330J1 model uses a BN44-00191B power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, this is a boost converter based on the FAN7530 PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes, when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased DC voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the SAMSUNG LE32A330J1 device:
Installed matrix (LCD panel) V315B1-L01 REV.C4, C5.
The matrix control uses the Timing Controller (T-CON) V315B1-C01.
To power the backlight, an inverter I315B1-16A is used, it is controlled by the PWM controller OZ964GN (20), BA2902F (14). The transformer 4018L 0819A2 is installed in the inverter converter. As power elements of the inverter, switches of the type AO4614 (8) are used.
The necessary supply voltages for all nodes of the SAMSUNG LE32A330J1 TV are generated by the BN44-00191B power module or its analogs using FAN7530 (PFC), MC33067P (PWM 16 pin), FSQ0165RN (Standby) microchips and power switches of the 11N60, FQPF9N50CF type.
MainBoard - the main board (motherboard) is a BN41-00982A module, using CPU chips: SAMS01; DRAM: EM6A9160TSOA-5G; SPI Flash: MX25L1605AM2I-12G; EEPROM: 24C256; and others.
The HTM2-6 / 235S tuner provides television reception and channel tuning.
Information from an alternative source:
SAMSUNG LE32A330J1N Chassis GJE32ASA -N61A
Panel Type (Matrix): T320HA01-AA
Motherboard: CBPF82MBZ4 BN41-01064BL, Tuner: BN40-00099A
T-con: BN 41-01074
PSU & Invertor: BN44-00252 PSLF161501A, FAN7530, SEM3202N, ICE3BR4765J
Remote control: BN59-AO-00676,
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