Technical description and composition of the SONY KDL-32BX321 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-32BX321
Chassis / Version: AZ2EK
Panel: T315XW03 V.E
T-CON: T315XW04 V1
Inverter (backlight): T73I041.00
PWM Inverter: OZ9966SN
MOSFET Inverter: AO D4184
Trans Inverter: TT 136.A0843.005 1118V2 TT3-3
Power Supply (PSU): APS-283 (ID) WS0015801 G-13
PWM Power: MIP2H2, CXA3810
MainBoard: BMT5366 EU WXGA-2 W / WS0016301 A
IC MainBoard: STA3498WS, D9329 (8), RT8105 (8), GG = DA H1Q (10)
Tuner: EB1C30 SUT-RE205TN
Technical Specifications KDL-32BX321
SONY KDL-32BX321
General recommendations for repairing TV LCD
Repair of electronic equipment usually begins with an external inspection of the device and diagnosis of the malfunction. In this case, you should visually carefully examine all the elements of the SONY KDL-32BX321 TV, both internal and external. Visible damage to elements can sometimes suggest further directions for finding a defect before starting the necessary measurements. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
In the case when the KDL-32BX321 does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, most likely in this case the G-13 APS-283 (ID) WS0015801 power supply module is faulty. When diagnosing and repairing the G-13 APS-283 (ID) WS0015801 power supply unit, first of all, it is necessary to check the fuse, and if it breaks, the power switch and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
It should be remembered that in the practice of repair, usually the power keys of N-Fet converters do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the MIP2H2 PWM controller chip itself may be faulty (7). It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
When using the Active Power Factor Correction (CMC) circuitry in the power module, the search for faulty elements is somewhat more complicated.
If the SONY KDL-32BX321 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU.
Repair of the inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety during depressurization of lamps, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
It should be remembered that in such cases there is a risk of failure of the power elements of the inverter and to take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
In cases of attempts to repair the motherboard A BMT5366 EU WXGA-2 W / WS0016301, it is necessary to check the operability of the power supply circuits of the microcircuits and, if possible, update 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 - STA3498WS, D9329 (8), RT8105 (8), GG = DA H1Q (10) and replace failed chips with new ones.
Before replacing the EB1C30 SUT-RE205TN tuner, if there is no tuning for the channels, first check the supply voltage at its terminals, including the varicap supply (30-33V).
Once again, remind users! Attempts to self-repair a SONY KDL-32BX321 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual / schematic diagram -------------------> Sony KDL-26BX320, KDL-26BX321, KDL-32BX320, KDL-32BX321, KDL-32BX420, KDL-37BX420, KDL-40BX420 Chassis AZ2EK P-2F
Service manual / schematic diagram -------------------> Sony KDL-32BX320, KDL-32BX321, KDL-32BX420, KDL-32BX421, KDL-40BX420, KDL-40BX421, KDL-46BX420, KDL-46BX421 Chassis AZ2-UK
Service manual / schematic diagram -------------------> Sony APS-283 Power supply
The appearance of the MainBoard BMT5366 is shown in the figure below:BMT5366
The appearance of the power supply
Main features of the device SONY KDL-32BX321:
Installed matrix (LCD panel) T315XW03 V.E.
The matrix control uses the Timing Controller (T-CON) T315XW04.
To power the backlight, an inverter T73I041.00 is used, it is controlled by the OZ9966SN PWM controller. A transformer TT 136.A0843.005 1118V2 TT3-3 is installed in the inverter converter. As power elements of the inverter, keys of the AO D4184 type are used.
The necessary supply voltages for all nodes of the SONY KDL-32BX321 TV are generated by the APS-283 power module or its analogs using MIP2H2, CXA3810 microcircuits.
MainBoard - the main board (motherboard) is a BMT5366 module, using microchips STA3498WS, D9329 (8), RT8105 (8), GG = DA H1Q (10) and others.
Tuner EB1C30 SUT-RE205TN provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T315XW03 VE
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
