Technical description and composition of the IZUMI TLE32F200B TV, type of panel and applicable modules. The composition of the modules.IZUMI LED
Model: TLE32F200B
Chassis / Version: MST6M181VS
Panel: 32 inch
LED driver (backlight): MP118T KB-5150
Power Supply (PSU): MP118T KB-5150
MainBoard: MST6M181VS
IC MainBoard: CPU: MST6E181VS-LF-Z1, FLASH: EN25P32
Tuner: CDT-3BP512-36
Technical Specifications TLE32F200B
IZUMI TLE32F200B
General repair guidelines for TV LCD LED
It is advisable to start the repair of the IZUMI TLE32F200B MST6M181VS MP118T KB-5150 TV with a careful external inspection of both internal and external elements. Often, based on certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. If ring cracks are detected in the soldering of the terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of an already known typical malfunction.
In the case when the TLE32F200B does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, the MP118T KB-5150 power supply module is probably faulty in this case. If it is serviceable with such manifestations, it is necessary to check the stabilizer (converter) of the processor power supply on the motherboard. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is cut off in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
Sometimes the IZUMI TLE32F200B 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 converter for the panel backlight LEDs, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including in the power supply unit (power supply unit).
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
If the MST6M181VS motherboard is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the varicaps of the tuner CDT-3BP512-36, which is usually within 30-33V, as well as other supply voltages at the terminals of the tuner.
Remember! Attempts to self-repair by users of the IZUMI TLE32F200B TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
Repair MainBoardThe appearance of the MainBoard MT8223L-V2.1 is shown in the figure below:
MT8223L-V2.1
MT8223L-V2.1 can be used in TVs:
IZUMI TLE19H400B (Panel M185XW01 VF), IZUMI TLE22H400B (Panel 22 inches).
The appearance of the power supply
Main features of the IZUMI TLE32F200B device:
Installed matrix (LED-panel) 32 inches.
The LED driver MP118T is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the IZUMI TLE32F200B TV is carried out by the MP118T power module, or its analogs.
MainBoard - the main board (motherboard) is an MST6M181VS module, using CPU chips: MST6E181VS-LF-Z1, FLASH: EN25P32 and others.
The tuner CDT-3BP512-36 provides the reception of television programs and tuning to channels.
