Technical description and composition of the SONY KDL-60W855B TV, panel type and applicable modules. The composition of the modules.SONY LED
Model: KDL-60W855B
Panel: ND4Y600LNX0101 A1992378A
LED backlight: 61.P2B05G001 00.P2B01GA01 Rev.A
T-CON: RUNTK5475TP 0106FV
LED driver (backlight): V361-101 LF FR-4 4H.V3616.011-A
Power Supply (PSU): APS-367 1-893-060-11
MainBoard: 1-889-202-22 173457422 A1999744B
IC MainBoard: CPU: X-Reality PRO CXD4748GB, H5TQ4G83AFR, Nand: TC58NVG3SOFTAIO
Tuner: TUS1-889-203-13
Control: Remote: RM-ED06, IR: 1-889-413-11, Wi-fi: J20H076
Technical Specifications KDL-60W855B
SONY KDL-60W855B
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SONY KDL-60W855B TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
In such cases, the APS-367 power supply is usually faulty. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches and rectifier diodes of the converters for a probable short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
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, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source. By opening the panel, each LED can be checked separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect probes in the forward direction to it. 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 on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the 1-889-202-22 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 - CPU: X-Reality PRO CXD4748GB, H5TQ4G83AFR, Nand: TC58NVG3SOFTAIO 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.
Before replacing the TUS1-889-203-13 tuner, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
The appearance of MainBoard 1-884-078-23 is shown in the figure below:1-884-078-23
The appearance of the power supply
Main features of the device SONY KDL-65HX920:
The matrix (LED panel) FQMY650DT01 A1846211A is installed.
The LED driver G12B is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the SONY KDL-65HX920 TV is carried out by the DPS-75 power module, or its analogues.
MainBoard - the main board (motherboard) is a module 1-884-078-23.
TV SONY KDL-65HX920 with LCD FQMY650DT01, diagonal size 65 "(165 cm) 16: 9 format. In the manufacturing technology of the display of this model is implemented LED backlight.
There is support for 3D images with active (shutter) technology for separating the right and left channels.
The FQMY650DT01 panel and the motherboard software 1-884-078-23 provide for viewing HD and Full HD images at a resolution of 1920x1080 pixels in a graphical decomposition according to the 1080p standard (Full HD).
The KDL-65HX920 is equipped with SMART software, embedded applications and the ability to work on the Internet. Connecting to the Internet can be done via Wi-Fi. The input analog video signal can be processed in PAL, SECAM, NTSC systems. Graphic processing and image formation of a digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Video processor supported media file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
Power sound system 30 W (3x10 W) provide 3 speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, RGB, VGA, HDMI x4, USB x2, Ethernet (RJ-45), Wi-Fi . An output for connecting headphones is provided. To connect an analog computer or laptop to this TV model, a VGA (D-Sub 15) connector is used, which supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
The power consumed by the TV in the operating mode from the network is 276 watts.
Overall dimensions: with stand 1504x935x374 mm, without stand 1504x900x45 mm.
TV Weight: with stand: 51.7 kg, without stand: 43.2 kg.
Attention! The FQMY650DT01 A1846211A panel of the SONY KDL-65HX920 LED TV is its most expensive element.
Avoid hitting the glass and excessive pressure on the screen surface to avoid damage to the LED panel!
It is unsafe to get any liquid on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the cables, the TV can become unrepairable.
