Technical description and composition of the SONY KDL-32BX340 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-32BX340
Chassis / Version: AZ3WK_2-PF
Panel: LTA320AN08 U01
T-CON: 60A320S2LV0.4 REV0.0; RT6906, 24C64WP
Inverter (backlight): SSI320_4US01
PWM Inverter: SS1091SN (24)
MOSFET Inverter: STU438S,
Trans Inverter: B S320S7 11C4
Power Supply (PSU): APS-317 (CH) G9
PWM Power: MIP2H2, CXA3810M
MOSFET Power: TK12A50D, KF5N50
MainBoard: MT5367_MB S1101-1 A
IC MainBoard: MT5367JUNU, STA381BWS, RT7257AL, MT5135AE, APA2172, NT5CB128M16BP-CG, TC58DVM92A5TAI0, ST24C128BWP
Tuner: SUT-RE215TN
Technical Specifications KDL-32BX340
SONY KDL-32BX340
General recommendations for repairing TV LCD
It is advisable to start diagnosing a malfunction of the SONY KDL-32BX340 TV, like all others, with an external examination of possible changes, both external and internal elements. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
Sometimes the SONY KDL-32BX340 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the APS-317 (CH) G9 common power module. In this case, first of all, it is necessary to check the fuse at the mains input. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail for no reason, which should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller MIP2H2 (7), which can only be checked by replacing , as well as other semiconductor elements (diodes, transistors, zener diodes).
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If the SONY KDL-32BX340 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.
Often, attempts to repair the SSI320_4US01 inverter are hampered by the fact that the diagnosis of the malfunction is complicated by the operation of its protection, which is designed to turn off the inverter in emergency conditions - when the lamps are depressurized, breaks or short circuits in high-voltage connections and other emergency situations. Lock protection to localize the defect is popular among repairmen.
When diagnosing with the protection off, special precautions must be taken, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
On the motherboard A 5573R01A01G, in the event of a malfunction, you should first check the performance of all the power regulators of the microcircuits and, if necessary, update the software (software). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - MT5367JUNU,. Defective components should be replaced.
If you suspect a malfunction of the SUT-RE215TN tuner, first of all, you need to make sure that the voltage of the varicaps (30-33V) is present on the corresponding output of the tuner, as well as other voltage supplying it.
Owners and users of the SONY KDL-32BX340 TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
Service manual / schematic diagram -------------------> Sony KLV-32BX350, KLV-40BX450, KLV-46BX450 CHASSIS AZ3WK 2-PFL, Main Board A, Power G9, G11, W40
The appearance of the MainBoard MT5367_MB is shown in the figure below:MT5367_MB
MT5367_MB can be used on TVs:
SONY KDL-32BX340 (Panel LTA320AN08 U01), SONY KDL-40BX440 (Panel LTA400HM19).
The appearance of the power supply
Main features of the device SONY KDL-32BX340:
Installed matrix (LCD panel) LTA320AN08 U01.
The matrix control uses the Timing Controller (T-CON) 60A320S2LV0.4.
The SSI320_4US01 inverter is used to power the backlight lamps; it is controlled by the SS1091SN PWM controller (24). The transformer B S320S7 11C4 is installed in the inverter converter. As power elements of the inverter, keys of the STU438S, type are used.
The necessary supply voltages for all nodes of the SONY KDL-32BX340 TV are generated by the APS-317 power module or its analogs using MIP2H2, CXA3810M microcircuits and power switches of the type TK12A50D, KF5N50.
MainBoard - the main board (motherboard) is an MT5367_MB module using MT5367JUNU, STA381BWS, RT7257AL, MT5135AE, APA2172, NT5CB128M16BP-CG, TC58DVM92A5TAI0, ST24C128BWP and other chips.
The SUT-RE215TN tuner provides television reception and channel tuning.
Information from an alternative source:
SONY KDL-32BX340
Panel Type (Matrix): LTA320AN08
Motherboard: MT5367_MB S1101-1 48.73R01.011, MT5367 JUNU, TC58DVM92A5TAI0, NT5CB128M16BP-CG, MT5135AE, STA381BWS, APA2172, RT7257AL x2, Tuner: SUT-RE215TN
T-con: 60A320S2LV0.4 REV0.0 (combined with panel strip), RT6906, 24C64WP
Invertor: SSI-320_4US01 REV: 0.0, SSI091ASN, STU438S x4
PSU: APS-317 (CH), MIP2H2, CXA3810M, TK12A50D, KF5N50 x2, MDS3652
Remote control: RM-ED049
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320AN08
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit)
Lamp Type: WLED
