Technical description and composition of the SONY KDL-48W585B TV, panel type and applicable modules. The composition of the modules.SONY LED
Model: KDL-48W585B
Chassis / Version: RB2G
Panel: LSY480HN01-A03
LED driver (backlight): 1-893-573-11 (173513411)
PWM LED driver: BD9397EFV, RT8295AH
MOSFET LED driver: MBR5U100
Power Supply (PSU): ACDP-085N02 Adapter 19.5V
MainBoard: 1-889-202-12 (173457412)
IC MainBoard: CXD4748GB, CXD4743GB, NAND: TC58NVG3S0FTAI0, AUDIO: YDA179-S, HDMI: SiI9589CTUC, Network: RTL8201FR
Tuner: 1-889-203-22 (173457522)
Control: Wi-fi: J20H076
Technical Specifications KDL-48W585B
SONY KDL-48W585B
General repair guidelines for TV LCD LED
Possible malfunctions
- The SONY KDL-48W585B TV does not turn on at all. There is no reaction to the remote control or to the control buttons from the front panel. Indicator lights do not light or flash.
Most often, with such manifestations, the main power module - Adapter - turns out to be faulty.
The external adapter 19.5V power supply is not always subject to repair, especially since the owner can purchase it independently. But, in some cases, it makes sense to open it and eliminate the simple typical defects inherent in all converters in pulsed sources. It is necessary to measure its output voltage of 19.5V and, if not, check for short circuit probabilities in the converter power switches and rectifier diodes.
During thermal or avalanche breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, frequency setting, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power switch may also be a PWM controller chip (PWM), which is verified by replacing a known-good one.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn on and immediately disappears
In such cases, the most likely malfunction of the LED backlight elements. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the 1-889-202-12 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace 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 - CXD4748GB, CXD4743GB, NAND: TC58NVG3S0FTAI0, AUDIO: YDA179-S, HDMI: SiI9589CTUC, Network: RTL8201FR and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
If the TV works normally from external devices, but does not tune into television channels, the tuner 1-889-203-22 (173457522) may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Attention! For users and owners of KDL-48W585B TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
Service manual / schematic diagram -------------> SONY RB2G KDL-48W585B.
FOR MODELS
KDL-40W580B, KDL-48W580B, KDL-60W600B, KDL-40W590B, KDL-48W585B, KDL-60W605B, KDL-40W600B, KDL-48W590B, KDL-60W607B, KDL-40W605B, KDL-48W600B, KDL-60W608B, KDL-40W607B, KDL-48W605B, KDL-60W610B, KDL-40W608B, KDL-48W607B, KDL-60W630B, KDL-48W608B, KDL-60WM15B, KDL-48WM15B
The appearance of MainBoard 1-889-202-12 is shown in the figure below:1-889-202-12
1-889-202-12 can be used in TVs:
SONY KDL-42W706B KDL-42W706W (Panel T420HVF06.1), SONY KDL-40W605B (Panel NS4S400DND01 4-528-221-02), SONY KDL-48W585B (Panel LSY480HN01-A03), SONY KDL-32W705B (Panel T320HVF04.0 xxxxG), SONY KDL-50W705B (Panel T500HVF04.2).
The appearance of the power supply
Main features of the device SONY KDL-48W585B:
The matrix (LED panel) LSY480HN01-A03 is installed.
The LED driver 1-893-573-11 is used to power the backlight LEDs, it is controlled by the BD9397EFV, RT8295AH PWM controller. As power elements of the LED driver, keys of the MBR5U100 type are used.
An external source of the ACDP-085N02 Adapter 19.5V type is used to power all internal components of the SONY KDL-48W585B TV.
MainBoard - the main board (motherboard) is a 1-889-202-12 module, using CXD4748GB, CXD4743GB, NAND: TC58NVG3S0FTAI0, AUDIO: YDA179-S, HDMI: SiI9589CTUC, Network: RTL8201FR and others.
The tuner 1-889-203-22 (173457522) provides the reception of television programs and tuning to channels.
