Technical description and composition of the SONY KDL-50WF665 TV, panel type and modules used. The composition of the modules.
SONY LED
Model: KDL-50WF665
Chassis / Version: MAIN BPE SONY
Panel: V500HJ4-Q01
LED backlight: LM41-00541A
LED driver (backlight): 1-982-712-11 173687911 A2201210A
PWM LED driver: BD9423EFV
MOSFET LED driver: KUS220N10 TO-252
Power Supply (PSU): Adapter 19.5V AC / DC ACDP-160
MainBoard: 1-982-629-11 173684511 A2199944B
IC MainBoard: CPU: MT5581SSEJ
Tuner: CE251ZP
Specifications KDL-50WF665
SONY KDL-50WF665
General recommendations for TV LCD LED repair
Possible manifestations of defects
- TV SONY KDL-50WF665 does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.
With such manifestations, the adapter power supply usually fails.
An external power supply Adapter 19.5V AC / DC ACDP-160 can be purchased by the owner of the TV on his own, and its repair is not always advisable, but sometimes it makes sense to open it and eliminate simple defects typical for SMPS. Then we recommend measuring its output voltages and, if they are absent, you should check the serviceability of the power switches and rectifier diodes of the converters for a possible short circuit.
In case of any breakdowns of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying a PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and a short circuit between the terminals, are checked by replacing them with a known good one.
- There is no image, there is sound, it reacts to the remote control. Or the image may appear for a second when turned on and immediately disappear.
Usually, in such cases, there is no backlighting of the LED panel (matrix). The reason may be found in a malfunction of the LEDs, in a violation of the contact connections of the LM41-00541A LED strips, or in the provision of their power supply (LED driver).
It is impossible to detect an open circuit in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters lightly light up one 3-volt LED if you connect the probes to it in the forward direction (red probe to the anode, black to the cathode). For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or pierced in the K / Z.
- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the 1-982-629-11 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). When repairing an MB board, you need to check its CPU components: MT5581SSEJ. Defective elements must be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.
Before replacing the tuner CE251ZP, if there is no tuning to the channels, you must first check the software and the supply voltage at its outputs. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
We remind users again! Attempts to self-repair the SONY KDL-50WF665 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
Additional MainBoard Repair
The appearance of MainBoard 1-982-629-11 is shown in the figure below:
1-982-629-11
Main features of the SONY KDL-50WF665 device:
Installed matrix (LED panel) V500HJ4-Q01.
The LED driver 1-982-712-11 is used to power the backlight LEDs, it is controlled by the PWM controller BD9423EFV. KUS220N10 TO-252 keys are used as power elements of the LED driver.
To power all internal units of the SONY KDL-50WF665 TV, an external adapter 19.5V AC / DC ACDP-160 type is used.
MainBoard - the main board (motherboard) is a 1-982-629-11 module, using CPU chips: MT5581SSEJ and others.
Tuner CE251ZP provides reception of television programs and tuning to channels.
Instructions and updates
Firmware update to v8.582:
File sony_tvupdate_2017_8582_enf_auth.zip, version 8.582 dated 22.06.2020 (290 409 452 bytes).
For models: KDL43WG665, KDL43WG663, KDL50WG665, KDL50WG663, KDL50WF663, KDL43WF663, KDL50WF665, KDL43WF665, KDL50WF660, KDL43WF660.
The update file and instructions can be downloaded from the manufacturer's website for the KDL-50WF665 model.
Benefits and improvements:
We fixed an issue where subtitles of some TV service providers were displayed incorrectly;
Improved overall TV stability.
Guides and instructions are also offered for this model:
Reference Manual (Web Manual). Published on 04 Apr 2018.
User manual. Published on 28 Nov 2019, size 2.43 MB.
Wall-Mount Bracket. Published on 09 Apr 2018, size 34.75 MB.
Quick setup guide and quick start guide. Published on 04 Apr 2018, size 1.89 MB.
SONY KDL-50WF665 TV with LCD V500HJ4-Q01, diagonal size 49.5 "(126 cm) 16: 9 format. The LCD panel uses Direct LED backlighting.
The V500HJ4-Q01 sensor and MainBoard 1-982-629-11 software provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics resolution at 1080p (Full HD). Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
KDL-50WF665 TV has built-in SMART software and pre-installed Linux operating system. Internet connection can be made via Wi-Fi wireless connection. Video processor supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), Xvid, DivX, MKV, JPEG.
The power of the sound speaker system is 10 W (2x5 W), provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x2, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n, Miracast. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.
The power consumed when operating from the mains is 128 W. External power supply Adapter 19.5V AC / DC ACDP-160.
Dimensions: with stand 1130x717x268 mm, without stand 1130x660x68 mm.
TV weight: with stand: 11.4 kg, without stand: 11 kg.
Attention! The panel V500HJ4-Q01 of the SONY KDL-50WF665 LED TV is the most expensive item.
Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!
It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable (IDIOTS WASHING THE DUMB SCREEN ARE ADVISED !! !! !!).