Technical description and composition of the MYSTERY MTV-1907W TV, type of panel and applicable modules. The composition of the modules.MYSTERY
Model: MTV-1907W
Panel: HT185WX2-10 // CLAA185WA09
Lamp backlight: 2 Lamp CCFL
Inverter (backlight): TV1901-ZC02-01 (B)
PWM Inverter: BIT3102B
MOSFET Inverter: AO4435, AO4804
Trans Inverter: BCK-19252WH 4111
Power Supply (PSU): TV1901-ZC02-01B
PWM Power: DM0565R
MainBoard: MSTV2203-ZC01-01 (B)
IC MainBoard: TSUMV26KE-LF, HT185WX1-100-TC05.0 X0.1, flash 25L4005A, memory 24C32P sound TDA1517P
Tuner: F21WT-3BAR-E
Control: WD12165
Technical Specifications MTV-1907W
MYSTERY MTV-1907W
General recommendations for repairing TV LCD
Repair and diagnostics of any electronic device, in particular MYSTERY from the chassis, it is advisable to start with a careful external examination of internal and external elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. In most cases, the repairman can guess the causes of the defect and possible consequences from the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
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, does not make any sounds or any signs of operability when turned on, there is a certain chance that the TV1901-ZC02-01 (B) power supply 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 MYSTERY models. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM regulator chip DM0565R are subject to verification, which it is desirable to verify by replacement.
If the MYSTERY MTV-1907W does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors. It should be remembered that when protection is disabled in order to diagnose a malfunction, there is always a risk of failure of the power elements of the inverter. After repair, it is necessary to restore all standard converter protection circuits.
Repair of the motherboard MSTV2203-ZC01-01 (B) must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - TSUMV26KE-LF, HT185WX1-100-TC05.0 X0.1, flash 25L4005A, memory 24C32P TDA1517P sound with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Owners of MTV-1907W TVs are recommended to contact qualified specialists with experience for repair! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> MYSTERY MSTV2203-N1
FIRMWARE FOR SPI FLASH -----------> MYSTERY MTV-1907W TSUMV26KE-LF HT185WX2-10
FIRMWARE FOR SPI FLASH -----------> MYSTERY MTV-1907W V1J01, Main: MSTV2203-ZC01-01(b), Panel: HT185WX1-100
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).
The appearance of the power supply
Main features of the MYSTERY MTV-1907W device:
Installed matrix (LCD panel) HT185WX2-10 or CLAA185WA09.
To power the backlight, the inverter TV1901-ZC02-01 is used, it is controlled by the BIT3102B PWM controller. A transformer BCK-19252WH 4111 is installed in the inverter converter. Keys of the type AO4435, AO4804 are used as power elements of the inverter.
The necessary supply voltages for all nodes of the MYSTERY MTV-1907W TV are generated by the TV1901-ZC02-01B power supply module, or its analogs using DM0565R microcircuits.
MainBoard - the main board (motherboard) is a module MSTV2203-ZC01-01, using chips TSUMV26KE-LF, HT185WX1-100-TC05.0 X0.1, flash 25L4005A, memory 24C32P sound TDA1517P and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
MYSTERY MTV-1907W TV with a BOE LCD display, diagonal size 19 "(48 cm) in 16: 9 format. The brightness of the screen is 250 cd / m² with CCFL (EEFL) fluorescent lamps. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in standa The channels are 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the sound system 3 W (2x1.5 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: 640x480, 800x600, 1024x768, 1280x1024.
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 BOE HT185WX2-10 LCD panel of the MYSTERY MTV-1907W 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!