Technical description and composition of the MYSTERY MTV-2407WH TV, type of panel and applicable modules. The composition of the modules.MYSTERY
Model: MTV-2407WH
Chassis / Version: V1J05
Panel: V236H1-L05 Rev: C1
T-CON: V236H1-P01 Rev: C1
Inverter (backlight): MP236CM2
PWM Inverter: OB3306QP
Power Supply (PSU): MP236CM2
MainBoard: MSTV2203-ZC01-01 (B)
IC MainBoard: CPU: TSUMV26KE-LF, EEPROM: 24C32WP, Flash: MX25L4005AMC, Sound: TDA1517P
Tuner: F21WT-3BAR-E
Technical Specifications MTV-2407WH
MYSTERY MTV-2407WH
General recommendations for repairing TV LCD
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should inspect all the internal elements of the V1J05 chassis, as well as the external chassis. In some cases, visible external damage to the elements can indicate the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of electronic circuit nodes. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
In the case when the MTV-2407WH does not turn on, does not respond to the remote control and buttons on the front panel, does not blink lights and does not show any signs of operability, the MP236CM2 power supply module is probably defective in this case. If it is serviceable with such manifestations, it is necessary to check the power supply stabilizer (converter) of the processor on the motherboard. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip can also cause a breakdown of the power switch of the converter.
Sometimes the MYSTERY MTV-2407WH TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all electrolytic capacitors of the filter according to the power supply of the inverter itself, including in the power supply unit (power supply unit). All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
The motherboard MSTV2203-ZC01-01 (B) must be checked if there is no reaction to the console and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary. Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: TSUMV26KE-LF, EEPROM: 24C32WP, Flash: MX25L4005AMC, Sound: TDA1517P requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
Remember! Attempts to self-repair by users of the MYSTERY MTV-2407WH TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> MYSTERY MSTV2203-N1
FIRMWARE FOR SPI FLASH -----------> MYSTERY MTV-2407WH V1J05, Main MSTV2203-ZC01-01(B), Panel V236H1-L05 Rev:C1
The appearance and voltage measurements at the control points of MainBoard MSTV2203-ZC01-01 are shown in the figure below:MSTV2203-ZC01-01
MSTV2203-ZC01-01 can be used in TVs:
BBK LT1929S (Panel F21WT-3BAR-E), BBK LT1529S (Panel M156MWR1), MYSTERY MTV-2206W (Panel CLAA216WA01), MYSTERY MTV-1906W (Panel M190MWW3), MYSTERY MTV-1607w (Panel M156MWR1), MYSTERY MTV-1907W (Panel BOE HT185WX2-10), MYSTERY MTV-2417WHD (Panel M236MWF1), MYSTERY MTV-2407WH (Panel V236H1-L05 Rev:C1), MYSTERY MTV-2217WD (Panel CLAA215FA05), MYSTERY MTV-1917WD (Panel CLAA185WA06).
Main features of the MYSTERY MTV-2407WH device:
Installed matrix (LCD panel) V236H1-L05 Rev: C1.
The matrix control uses the Timing Controller (T-CON).
To power the backlight, an MP236CM2 inverter is used, it is controlled by the OB3306QP PWM controller.
The formation of the necessary supply voltages for all nodes of the MYSTERY MTV-2407WH TV is carried out by the MP236CM2 power supply module, or its analogues.
MainBoard - the main board (motherboard) is an MSTV2203-ZC01-01 module, using CPU chips: TSUMV26KE-LF, EEPROM: 24C32WP, Flash: MX25L4005AMC, Sound: TDA1517P and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
MYSTERY MTV-2407WH TV with V236H1-L05 LCD, 24 "(61 cm) diagonal size in 16: 9 format. Screen brightness of 300 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast as the ratio of maximum brightness to the minimum is 800: 1. The design and technical capabilities of the TV provide for watching broadcasts and films in high quality HD with a resolution of 1920x1080 pixels in graphic decomposition according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic Digital signal processing and generation takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the acoustic system of sound 6 W (2x3 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, RGB, VGA, HDMI. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 800x600, 1024x768.
The power consumed by the TV in the operating mode from the network is 60 watts.
Dimensions: With stand 642x444x209 mm, Without stand 570x345x70 mm.
Attention! The V236H1-L05 Rev: C1 panel of the MYSTERY MTV-2407WH LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!