Technical description and composition of the HARPER 22F0530 TV, panel type and modules used. The composition of the modules.HARPER LED
Model: 22F0530
Chassis / Version: T.VST59.A81
Panel: CX215DLEDM
LED backlight: 180.DT0-2219D00-0H HL-00215A28-0601S-01 A
T-CON: 21M07-C04 M215HVN01.0 Ctrl BD
LED driver (backlight): integrated into PSU
PWM LED driver: OB3350CP
MOSFET LED driver: AOD450
Power Supply (PSU): MP24S-CX
PWM Power: OB2273
MOSFET Power: TO-220
MainBoard: T.VST59.A81
IC MainBoard: CPU: TSUMV59XU-Z1, SPI FLASH: 25Q32, Audio: YD1517P
Tuner: Noname
Control: IR: 200-GJR-LE32190
Specifications 22F0530
HARPER 22F0530
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- HARPER 22F0530 does not turn on, does not respond to buttons and the remote control, indicators on the front panel do not light or flash.
In some of these cases, a malfunction is detected in the MP24S-CX power supply module. Then we recommend measuring its output voltages and, if they are absent, check the serviceability of the power switches (TO-220) and rectifier diodes of the converters for a possible short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can operate in an emergency in the short-circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse is usually cut off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers OB2273, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or known to be working properly.
- No picture, sound, all other TV functions work. When turned on, the image may sometimes appear for a second.
Most likely in these cases is a malfunction of the LED backlight. Often the reason is a malfunction of the LEDs (open circuit, short circuit ...), or the connectors of the strips (strings), less often the LED driver turns out to be faulty.
It is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light a single 3V LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off, or pierced in the K / Z.
- The TV does not turn on, the indicator signals standby or operating mode, or blinks.
Repair or diagnostics of the T.VST59.A81 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). If it is not possible to replace the MB (SSB) board, you must check the serviceability of its elements - CPU: TSUMV59XU-Z1, SPI FLASH: 25Q32, Audio: YD1517P. Defective components must be replaced.
Before changing the Noname tuner, if it is not possible to tune to television channels, you should make sure that there are supply voltages, which must be measured at the corresponding tuner terminals and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be monitored with an oscilloscope
Attention to TV owners! Attempts to repair HARPER 22F0530 yourself are not recommended by the manufacturer and can lead to serious negative consequences!
The appearance of the MainBoard T.VST59.A81 is shown in the figure below:T.VST59.A81
External view of the power supply
Main features of the HARPER 22F0530 device:
Installed matrix (LED panel) CX215DLEDM.
Matrix control uses Timing Controller (T-CON) 21M07-C04.
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the OB3350CP PWM controller. The keys of the AOD450 type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the HARPER 22F0530 TV is carried out by the MP24S-CX power module, or its analogs using OB2273 microcircuits and TO-220 power switches.
MainBoard - the main board (motherboard) is a T.VST59.A81 module, using CPU chips: TSUMV59XU-Z1, SPI FLASH: 25Q32, Audio: YD1517P and others.
Tuner Noname provides reception of television programs and tuning to channels.
HARPER 22F0530 TV with LCD CX215DLEDM, diagonal size 22 "(56 cm) 16: 9. The required screen brightness of 180 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 2000: 1. The LED panel of this TV is equipped with edge LED backlighting.The design and technical capabilities of the TV provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping occurs in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported multimedia file formats: MP3, WMA, MPEG4, DivX, MKV, JPEG.
Speaker power of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), VGA, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
Overall dimensions: 509x343x175 mm.
TV weight: 2.4 kg.
Attention! Panel CX215DLEDM LED TV HARPER 22F0530 is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.