Technical description and composition of the SAMSUNG UE22F5400 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE22F5400 UE22F5400AK
Chassis / Version: AS01
Panel: M215HW03 V.1
T-CON: M215HW03 V1 CTRL BD 21M03-C07
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): Adapter
MainBoard: BN41-01957B BN94-06485H
IC MainBoard: WT61P807
Tuner: BN40-00261A DNTS403EL105A
Technical Specifications UE22F5400
SAMSUNG UE22F5400
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE22F5400 TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
Sometimes, in such cases, the main switching power adapter is malfunctioning.
An external 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 converters in pulsed sources. It is necessary to measure its output voltage and, in case of its absence, check the serviceability of power switches and rectifier diodes in the converters for possible breakdown.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And during short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip can also cause a malfunction of the power switch of the converter and is checked by replacement.
- 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 most cases, a malfunction is caused by a lack of display backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-01957B motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - WT61P807 which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Malfunction of the tuner BN40-00261A DNTS403EL105A 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.
TV users and owners need to remember that attempts to self-repair a SAMSUNG UE22F5400 TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
The appearance of the MainBoard BN41-01957B is shown in the figure below:BN41-01957B
Main features of the SAMSUNG UE22F5400 device:
Installed matrix (LED-panel) M215HW03 V.1.
The matrix control uses the Timing Controller (T-CON) M215HW03.
To power the backlight LEDs, a converter is used, combined with the main board BN41-01957B.
To power all internal components of the SAMSUNG UE22F5400 TV, an external adapter type source is used.
MainBoard - the main board (motherboard) is a BN41-01957B module, using WT61P807 chips and others.
The tuner BN40-00261A DNTS403EL105A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: M215HW03 V1QA
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 3.8 / 1.2 (Tr / Td)
Frequency: 60Hz
Lamp Type: 16S4P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
