Technical description and composition of the DNS E22A00 TV, panel type and modules used. The composition of the modules.DNS LED
Model: E22A00
Chassis / Version: T.VST29.A2B
Panel: CX215LEDM M215HGE-P01
T-CON: M215HGE-21-X + C
LED driver (backlight): integrated into PSU
PWM LED driver: BIT3251
Power Supply (PSU): MP113TH-39
PWM Power: PWM SOT23-6 (BA2S2D, BA2P18, LPP36)
MainBoard: T.VST29.A2B 12313
IC MainBoard: TSUMV59XE-Z1, W25Q32FVSIG, 1517P
Tuner: CDT-3SP5I2-36
E22A00 Specifications
DNS E22A00
General recommendations for TV LCD LED repair
In cases when the DNS E22A00 TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds when turning on, and no signs of operation at all, the MP113TH-39 power module is most likely faulty or missing standby food. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. If it breaks, the power elements of the transistors and diodes of the rectifier bridge should be checked for avalanche (thermal) breakdown.
The reasons for the breakdown of the power switch in switching power supplies (SMPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as the failure of the PWM SOT-23-6 (BA2S2D, BA2P18, LPP36) or breaks of resistors in its strapping.
If the DNS E22A00 TV does not have a picture, but there is sound, there is likely a malfunction in the CX215LEDM LED backlight circuits.
It is often necessary to disassemble the panel to check the health of the LEDs, as well as the contact connections in the connectors and solders.
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the 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. By opening the panel, you can check each LED separately. Typically, Chinese multimeters will lightly light one 3-volt LED if you connect the probes to it in the forward direction. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of LED health. In the event of a malfunction of the LED, its zener diode will either be cut off, or broken through in the K / Z.
Diagnostics and repair of the T.VST29.A2B 12313 motherboard usually begins with checking the functionality of the stabilizers and power converters of the module chips. In some cases, a software update is required.
If it is not possible to replace the MB (SSB) board, it is necessary to check the serviceability of its elements - TSUMV59XE-Z1, W25Q32FVSIG, 1517P. Defective components must be replaced.
Before changing the CDT-3SP5I2-36 tuner, if it is not possible to tune to TV 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
Owners and users of the DNS E22A00 TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to the complete non-repairability of the device!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> DNS E22A00, Main: T.VST29.A2B 12313, Panel: CX215LEDM M215HGE-P01
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> DNS E22A00, Main: CV59L-C, Panel: M215HTN01.1
The appearance of the MainBoard T.VST29.A2B is shown in the figure below:T.VST29.A2B
T.VST29.A2B can be used in TVs:
DNS E19A00 (Panel CX185LEDM (V185B1-PE)), DNS E22A11 (Panel M215HGE-P02), DNS E22A00 (Panel CX215LEDM M215HGE-P01), DNS E16A20 (Panel TL156WH4 (TL)(N2)), ERISSON 22LEB15 (Panel M215HW01), ERISSON 19LEB15 (Panel M185XW01), ERISSON 24LEB15 (Panel M240HW01 VD), ROLSEN RL-19L1003U (Panel M185BGE-L10 Rev.C1), ROLSEN RL-22L1003U (Panel V216BG1-LE1 REV C1), ROLSEN RL-23L1003UF (Panel M230HGE-L20 Rev.C1), ROLSEN RL-23L1005UF (Panel M230HGE-L20 RevC1).
External view of the power supply
Key features of the DNS E22A00:
Installed matrix (LED-panel) CX215LEDM M215HGE-P01.
Matrix control uses Timing Controller (T-CON) M215HGE-21-X + C.
To power the backlight LEDs, a converter combined with a power supply is used, controlled by a BIT3251 PWM controller.
The formation of the necessary supply voltages for all nodes of the DNS E22A00 TV is carried out by the MP113TH-39 power module, or its analogs using PWM SOT23-6 microcircuits (BA2S2D, BA2P18, LPP36).
MainBoard - the main board (motherboard) is a T.VST29.A2B module using TSUMV59XE-Z1, W25Q32FVSIG, 1517P and others.
The CDT-3SP5I2-36 tuner provides reception of television programs and tuning to channels.
DNS E22A00 TV with LCD CX215LEDM, diagonal size 22 "(56 cm) in 16: 9 format. Necessary screen brightness of 300 cd / m² is provided by LED backlight. Contrast - ratio of maximum brightness to minimum brightness is 1000: 1. the model uses a panel with backlighting LEDs at the end - Edge LED.
The CX215LEDM M215HGE-P01 sensor and the MainBoard T.VST29.A2B software provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics resolution at 1080p (Full HD). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, JPEG.
Speaker power 10 W (2x5 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), AV, audio x2, component, SCART, VGA, HDMI, 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, 1920x1080.
The power consumed by the TV operating in mains mode is 36 W. MP113TH-39 power supply.
Overall dimensions: 530x374x150 mm.
TV weight: 3.87 kg.
Attention! Panel CX215LEDM M215HGE-P01 LED TV DNS E22A00 is an expensive and unreliable element.
Do not allow any impact 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 unrepairable.