Technical description and composition of the SAMSUNG UE22D5003 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE22D5003
Chassis / Version: U57B
Panel: LTM215HT04-V (BN07-01044A)
PWM LED driver: LED Controller - OZ9998
MOSFET LED driver: STM4886
Power Supply (PSU): BN44-00467A
PWM Power: GM0765R
MOSFET Power: GM0765R
MainBoard: BN41-01703A
IC MainBoard: SPI Flash: 25X40BVSIC, EEPROM: 24C256, NTP-7411S
Tuner: DTM-8B 125S
Technical Specifications UE22D5003
SAMSUNG UE22D5003
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs SAMSUNG UE22D5003, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, it does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the BN44-00467A power module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, which is typical for certain SAMSUNG models. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) of the GM0765R is detected, which can be integrated with a PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself for no reason that you should look for when checking other elements of the primary circuit - electrolytic capacitors, PWM controller GM0765R, which can be checked only by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the SAMSUNG UE22D5003 TV does not have an image, but there is sound, a malfunction in the LED backlight circuits of the BN07-01044A panel is likely. It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply) for an overstated ESR.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
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.
In cases of attempts to repair the motherboard BN41-01703A, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its percent-ic301 chips - NTP-7411S Flash-25X40BVSIC 24C256 and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before replacing the DTM-8B 125S tuner, if there is no tuning for the channels, you must first check the supply voltage at its terminals, including the power supply of varicaps (30-33V).
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of repair of electronic equipment.
SCHEMATICS ----------> Samsung UE22D5003 Chassis U57B.
Chassis : U66A Model : UE32D55**R*, UE37D55**R*, UE40D55**R*, UE46D55**R*, UE32D57**RS, UE37D57**RS, UE40D57**RS, UE46D57**RS
Chassis : U57A Model : UE32D50**PW, UE37D50**PW, UE40D50**PW, UE46D50**PW, UE32D40**NW
Chassis : U57B Model : UE19D40**NW, UE22D50**NW, UE27D50**NW.
The appearance of the MainBoard BN41-01703A is shown in the figure below:BN41-01703A
BN41-01703A can be used in TVs:
SAMSUNG UE19D4003BN UE19D4003BW (Panel LTM185AT05), SAMSUNG UE22D5003 (Panel LTM215HT04-V (BN07-01044A)).
The appearance of the power supply
Main features of the SAMSUNG UE22D5003 device:
Installed matrix (LED panel) LTM215HT04-V (BN07-01044A).
A converter controlled by the PWM controller LED Controller - OZ9998 is used to power the backlight LEDs. As power elements of the LED driver, keys of the STM4886 type are used.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE22D5003 TV is carried out by the BN44-00467A power module, or its analogs using GM0765R microcircuits and GM0765R type power switches.
MainBoard - the main board (motherboard) is a BN41-01703A module, using SPI Flash chips: 25X40BVSIC, EEPROM: 24C256, NTP-7411S and others.
The DTM-8B 125S tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTM215HT04-V
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 (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Lamp Type: 10S3P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V