Technical description and composition of the MYSTERY MTV-1607W TV, panel type and applicable modules. The composition of the modules.MYSTERY
Model: MTV-1607w
Chassis / Version: v2j08
Panel: M156MWR1
Inverter (backlight): TV1901-ZC02-01 (B)
PWM Inverter: BIT3102B
MOSFET Inverter: AO4435, AO4804
Trans Inverter: BCK-19252WH 1010
Power Supply (PSU): TV1901-ZC02-01B
PWM Power: DM0565R
MainBoard: MSTV2203-ZC01-01 (B)
IC MainBoard: TSUMV26KU-LF, 25L4006E, 24C32, TDA1517P, 74HC4052D
Tuner: F21WT-3BAR-E
Technical Specifications MTV-1607W
MYSTERY MTV-1607W
General recommendations for repairing TV LCD
Repair of the MYSTERY MTV-1607w must begin with the diagnosis of the malfunction and a thorough inspection of its external and internal components, including the case ones. Sometimes, only by some signs can we determine the further direction of the localization of the malfunction. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
If the power supply module TV1901-ZC02-01 (B) fails, the external manifestations may be different, for example, the MYSTERY MTV-1607w does not turn on at all and there is no indication of the indicator lights on the front panel. When diagnosing and repairing the TV1901-ZC02-01 (B) power supply unit, it is first necessary to check the fuse, and if it breaks, the power switch DM0565R and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
It should be borne in mind that in the repair practice it is extremely rare that key transistors of the N-FET type fail for no reason that should be looked for by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, either dried electrolytic capacitors or dangling resistors of the primary circuit of the PSU, 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.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
In those cases when the MYSTERY MTV-1607w TV has lost an image, and the sound is there and all the other functions are functional, there is a possibility of a malfunction of the inverter (converter for powering the backlight). When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power.
Repair of the TV1901-ZC02-01 (B) inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety when the lamps are depressurized, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
It should be remembered that when the protection is turned off, there is always a risk of failure of the inverter power elements during diagnosis. After repair, it is necessary to restore all standard converter protection circuits.
Diagnosis and repair of the motherboard MSTV2203-ZC01-01 (B) is carried out by checking the performance of power stabilizers or updating the software (software). When repairing an MB board, it is necessary to check its components TSUMV26KU-LF, 25L4006E, 24C32, tuner: F21WT-3BAR-E. Defective items should be replaced.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Main Board MYSTERY MSTV2203-N1
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-1607W device:
Installed matrix (LCD-panel) M156MWR1.
To power the backlight, the inverter TV1901-ZC02-01 (B) is used, it is controlled by the BIT3102B PWM controller. A BCK-19252WH 1010 transformer is installed in the inverter converter. Keys of the type AO4435, AO4804 are used as power elements of the inverter.
The required supply voltages for all nodes of the MYSTERY MTV-1607W 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 TSUMV26KU-LF, 25L4006E, 24C32, TDA1517P, 74HC4052D and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
MYSTERY MTV-1607W TV with M156MWR1 LCD, 16 "(41 cm) diagonal size of 16: 9 format. 250 cd / m² screen brightness is provided by 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 one hundred Dart 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 30 watts.
Dimensions: With stand 642x444x209 mm, Without stand 570x345x70 mm.
Attention! The M156MWR1 panel of the MYSTERY MTV-1607W 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!