Technical description and composition of the SONY KDL-50W807C TV, panel type and applicable modules. The composition of the modules.SONY LED
Model: KDL-50W807C
Chassis / Version: GN1G
Panel: V430FWME03
LED backlight: 403-AA-2 (HF) (0)
T-CON: T550HVN08.2 CTRL BD 55T23-C03
LED driver (backlight): 15STM6S-ABC01 REV: 1.0
PWM LED driver: BD9397EFV
MOSFET LED driver: STU30N01
Power Supply (PSU): ACDP-120E03 Adapter 19.5V 6.2A
MainBoard: 1-893-880-11 (173525511)
IC MainBoard: W25Q32BV, THGBMBG7D2KBAIL
Tuner: CE241ZP
Control: Remote: RMT-TX100B
Technical Specifications KDL-50W807C
SONY KDL-50W807C
General repair guidelines for TV LCD LED
Possible malfunctions
- The SONY KDL-50W807C 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.
Most likely, in this case, the main switching power supply (IIP) ACDP-120E03 is faulty.
The owner of a TV can purchase an external power supply unit such as ACDP-120E03 and repairing it is not always advisable. In any case, the simplest typical defects characteristic of most IIP schemes can be easily detected and eliminated after opening. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, it is necessary to check the serviceability of power switches and rectifier diodes for possible breakdown (short circuit).
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM), if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
In most of these cases, a malfunction is detected in the nodes and backlight elements of the LED panel. 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 TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the 1-893-880-11 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). When repairing an MB board, you need to check its components W25Q32BV, THGBMBG7D2KBAIL. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
A malfunction of the CE241ZP tuner is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Attention TV owners! Self-repair attempts by SONY KDL-50W807C are not recommended by the manufacturer and can lead to serious negative consequences!
Service Manual 98 pages of 2015 for the KDL-50W800C, KDL-50W805C, KDL-50W807C, KDL-50W809C, KDL-55W800C, KDL-55W805C.
Service manual / Schematics --------------> SONY KDL-50W807C Chassis GN1G.
models: KDL-50W800C, KDL-50W805C, KDL-50W807C, KDL-50W809C, KDL-55W800C, KDL-55W805C
The appearance of MainBoard 1-893-880-11 is shown in the figure below:1-893-880-11
1-893-880-11 can be used in TVs:
SONY KDL-43W756C (Panel V430FWME03), SONY KDL-50W807C (Panel V430FWME03).
The appearance of the power supply
Main features of the device SONY KDL-50W807C:
Installed matrix (LED panel) V430FWME03.
The matrix control uses the Timing Controller (T-CON) T550HVN08.2.
The LED driver 15STM6S-ABC01 is used to power the backlight LEDs, it is controlled by the BD9397EFV PWM controller. As power elements of the LED driver, keys of the STU30N01 type are used.
To power all the internal components of the SONY KDL-50W807C TV, an external source such as ACDP-120E03 Adapter 19.5V 6.2A is used.
MainBoard - the main board (motherboard) is a module 1-893-880-11, using microchips W25Q32BV, THGBMBG7D2KBAIL and others.
The CE241ZP tuner provides TV reception and channel tuning.