Technical description and composition of the SONY KDL-40W605B TV, panel type and applicable modules. The composition of the modules.SONY LED
Model: KDL-40W605B
Chassis/Version: RB2G
Panel: NS4S400DND01 4-528-221-02
LED backlight: 2013SONY40A/B 3228 05 REV1.0 130927 1-889-701-11 (1-734-767-11), 1-889-702-11 (1-734-767-11)
T-CON: 14Y-40FMB7S4LV0
LED driver (backlight): 1-889-655-11 (173474411) A1983521A LD HM
Power Supply (PSU): Adapter
MainBoard: 1-889-202-22 (173457422) BAX L // 1-889-202-12 173457412
IC MainBoard: CPU: X-Reality PRO CXD4748GB, Nand: TC58NVG3SOFTAIO
Đ¢uner: TUS1-889-203-12 (173457512) // 1-889-203-13
Control: IR: 1-889-678-11, Wi-fi: J20H076
General repair guidelines for TV LCD LED
Repair of the SONY KDL-40W605B TV should begin with a careful external examination of all its components and modules. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. 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 case of a power supply module malfunction, external manifestations may be different, for example, the SONY KDL-40W605B does not turn on at all and there is no indication of the control lights on the front panel. With the same symptoms, the stabilizer (converter) of the power supply to the control processor may be faulty. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) 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 PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If the SONY KDL-40W605B has no image, but there is sound and the TV is controlled by the remote control, a malfunction in the backlight circuits of the panel is likely. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
In cases of complex repairs of MB (SSB) and with the necessary skills and equipment, sometimes it may be necessary to replace its SPU chips: X-Reality PRO CXD4748GB, Nand: TC58NVG3SOFTAIO and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If you suspect a malfunction of the tuner TUS1-889-203-12 (173457512), first of all, you need to make sure that the voltage of the varicaps (30-33V) is on the corresponding output of the tuner, as well as other voltage supplying it.
It should be remembered! Attempts to repair the SONY KDL-40W605B 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!
Service manual / schematic diagram ---------------> Sony KDL-40W590B, KDL-40W600B. CHASSIS RB2G
The appearance of MainBoard 1-889-202-22 is shown in the figure below:1-889-202-22
1-889-202-22 can be used in TVs:
SONY KDL-42W817B (Panel T420HVJ02.1), SONY KDL-42W706B KDL-42W706W (Panel T420HVF06.1), SONY KDL-40W605B (Panel NS4S400DND01 4-528-221-02), SONY KDL-42W705B (Panel T420HVF06.0 xxxxG), SONY KDL-50W817B (Panel T500HVF04.1), SONY KDL-42W828B (Panel T420HVJ02.0), SONY KDL-48W605B (Panel LSY480HN01-001), SONY KDL-32W706B (Panel T320HVF04.1 ).
Main features of the device SONY KDL-40W605B:
Installed matrix (LED-panel) NS4S400DND01 4-528-221-02.
The matrix control uses the Timing Controller (T-CON) 14Y-40FMB7S4LV0.
The LED driver 1-889-655-11 is used to power the backlight LEDs.
To power all the internal components of the SONY KDL-40W605B TV, an external adapter type source is used.
MainBoard - the main board (motherboard) is a 1-889-202-22 module, using CPU chips: X-Reality PRO CXD4748GB, Nand: TC58NVG3SOFTAIO and others.
The tuner TUS1-889-203-12 (173457512) // 1-889-203-13 provides the reception of television programs and tuning to channels.