Technical description and composition of the SONY KDL-26S3000 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-26S3000
Chassis / Version: WAX3
Panel: V260B1-L07 Rev. C3
T-CON: V260B1-C01 - 35-D017430
Inverter (backlight): I260B1-12E
PWM Inverter: OZ964
Power Supply (PSU): A-1276-472-A = 1-874-218-11 (1-728-835-11)
PWM Power: MIP2H2 (7pin), MCZ3001DB (18pin), TDA8932BT
MOSFET Power: 2SK3568
MainBoard: 1-874-223-11 (B1) = 1-874-223-12
IC MainBoard: TDA9973AHL, D61123F1, CXD9922R, NJM3414AV, TDA9886TS / V4,118, LA5795T-TLM-E, PQ070XZ01ZPH
Tuner: BTP-HC401 (10)
Control: RM-YD018
Technical Specifications KDL-26S3000
SONY KDL-26S3000
General recommendations for repairing TV LCD
Repair of the SONY KDL-26S3000 TV should begin with the diagnosis of a malfunction, which involves a careful examination of the external and internal elements of the device. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
Sometimes the SONY KDL-26S3000 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 A-1276-472-A common power module. If it is working properly, you must check the standby batteries on the Main Board. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the binding of the MIP2H2, MCZ3001DB, TDA8932BT chips are subject to verification.
If the SONY KDL-26S3000 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. It is necessary to take into account that in cases of inverter protection shutdown (in order to be able to diagnose) there is a risk of failure of the inverter power elements and 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 1-874-223-11 (1-874-223-12), it is necessary to check the operability of the linear stabilizers and power converters of its microcircuits and, if possible, update the software (software). BGA chips can sometimes be diagnosed with local heating. Complex repair of MainBoard is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements TDA9973AHL, NEC D61123F1, CXD9922R, NJM3414AV, TDA9886TS / V4,118, LA5795T-TLM-E, PQ070XZ01ZPH requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
The malfunction of the BTP-HC401 tuner is established after checking the software and all supply voltages at its terminals.
Attention to the owners! Attempts to self-repair a SONY KDL-26S3000 TV are not recommended by the manufacturer and can lead to serious negative consequences!
Service manual / schematic diagram -------------------> Sony KDL-26S3000, KDL-32S3000, KDL-40S3000, KDL-46S3000
PSU schematic diagram -------------------> Sony 1-874-218-11 Power supply
The appearance of MainBoard 1-874-223-11 is shown in the figure below:1-874-223-11
1-874-223-11 can be used in TVs:
SONY KDL-32P3000 (Panel LTA320WT-L06), SONY KDL-32U3000 (Panel LTA320WT-L06), SONY KDL-37P3000 (Panel T370XW02), SONY KDL-40P3000 (Panel T400XW01 V0), SONY KDL-26S3000 (Panel V260B1-L07 Rev.C3 ), SONY KDL-32P3020 (Panel LTA320WT-L06), SONY KDL-40U3000 (Panel T400XW01 V0).
The appearance of the power supply
Main features of the device SONY KDL-26S3000:
Installed matrix (LCD panel) V260B1-L07 Rev. C3.
The matrix control uses the Timing Controller (T-CON) V260B1-C01.
To power the backlight, an I260B1-12E inverter is used, it is controlled by the OZ964 PWM controller.
The necessary supply voltages for all nodes of the SONY KDL-26S3000 TV are generated by the A-1276-472-A power supply module or its analogs using MIP2H2 (7pin), MCZ3001DB (18pin), TDA8932BT and 2SK3568 power switches.
MainBoard - the main board (motherboard) is a module 1-874-223-11, using TDA9973AHL, D61123F1, CXD9922R, NJM3414AV, TDA9886TS / V4,118, LA5795T-TLM-E, PQ070XZ01ZPH and others.
Tuner BTP-HC401 (10) provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CMO
Model: V260B1-L07
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: 12 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
