Technical description and composition of the SAMSUNG UE22D5000NW TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE22D5000NW UE22D5000
Chassis / Version: X5_LED_SMALL
Panel: M215HW01
LED backlight: U57B
LED driver (backlight): integrated into PSU
PWM LED driver: OZ9998
Power Supply (PSU): BN44-00448A (PD22AO_BDY)
PWM Power: GM0765R
MainBoard: BN41-01602A BN94-05161B
IC MainBoard: CPU: SEMS20 + WT61P805, DRAM: K4B1G1646G-BCH9
Tuner: BN40-00196A DTOS40FVH082A
Technical Specifications UE22D5000
SAMSUNG UE22D5000NW
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE22D5000NW does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
In such cases, the BN44-00448A power supply is usually faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for a possible partial or complete breakdown.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible key parameters. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers GM0765R, in the absence of visible damage or frank fault between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
In such cases, the most likely malfunction of the 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 should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a malfunction, the zener diode PN junction will either be cut off or broken into short-circuit.
- The indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN41-01602A motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update or replace the software (software). Board repair and replacement of CPU chips: SEMS20 + WT61P805, DRAM: K4B1G1646G-BCH9 are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all, check the voltage of the tuner BN40-00196A DTOS40FVH082A and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
TV users and owners need to remember that attempts to self-repair a SAMSUNG UE22D5000NW TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
SCHEMATICS -----> Samsung UE19D4003 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.
FIRMWARE FOR EEPROM 24C256, Weltrend WT61P805 -----------> SAMSUNG UE22D5000NW UE22D5000, Main: BN41-01602A
The appearance of the MainBoard BN41-01602A is shown in the figure below:BN41-01602A
BN41-01602A can be used in TVs:
SAMSUNG UE19D4010NW UE19D4010 (Panel LTM185AT04), SAMSUNG UE22D5000NW UE22D5000 (Panel M215HW01).
The appearance of the power supply
Main features of the SAMSUNG UE22D5000NW device:
Installed matrix (LED-panel) M215HW01.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the OZ9998 PWM controller.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE22D5000NW TV is carried out by the BN44-00448A power module, or its analogs using GM0765R microcircuits.
MainBoard - the main board (motherboard) is a BN41-01602A module, using CPU chips: SEMS20 + WT61P805, DRAM: K4B1G1646G-BCH9 and others.
Tuner BN40-00196A DTOS40FVH082A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: M215HW01 V2
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: 2 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V