Technical description and composition of the IZUMI TLE22F400B TV, type of panel and applicable modules. The composition of the modules.IZUMI LED
Model: TLE22F400B
Panel: LM216WF4
T-CON: MT8223L-V2.1
LED driver (backlight): HQ-LED60DC
PWM LED driver: Y1N8TD
MOSFET LED driver: 19N10
PWM Power: AY036P-1HF08
MainBoard: LA.MV6.D2 0343
IC MainBoard: MT215DW01 V.3, 25D80VSIG, 24C32, YD1517P, TD158E, CT3257A, µP1715P (8), µ1707P (8)
Tuner: HFT-8F / 125CW
Appearance
IZUMI TLE22F400B
General repair guidelines for TV LCD LED
IZUMI TLE22F400B, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
Sometimes the IZUMI TLE22F400B TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is a failure of the common power module. If it is working properly, you need to check the processor batteries on the SSB (Main Board). When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the filter of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
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 PWM chip AY036P-1HF08 from the manufacturer.
If there is no image when IZUMI TLE22F400B is turned on, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the LM216WF4 panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
Repair or diagnostics of the LA.MV6.D2 0343 motherboard should begin by checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software).
When repairing an MB board, you need to check its components MT215DW01 V.3, 25D80VSIG, 24C32, YD1517P, TD158E, CT3257A, µP1715P (8), µ1707P (8). Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
In cases where there is no tuning to the local television channels, you should make sure that the voltage of the varicaps (30-33V) and other supply voltages at the terminals of the HFT-8F / 125CW tuner are present.
Attention to the owners! Attempts to self-repair the IZUMI TLE22F400B TV are not recommended by the manufacturer and can lead to serious negative consequences!
The 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).
Main features of the IZUMI TLE22F400B device:
The matrix (LED panel) LM216WF4 is installed.
The matrix control uses the Timing Controller (T-CON) MT8223L-V2.1.
To power the backlight LEDs, the HQ-LED60DC LED driver is used, controlled by the Y1N8TD PWM controller. As power elements of the LED driver, keys of the 19N10 type are used.
The required supply voltage for all nodes of the TV IZUMI TLE22F400B provides a switching power supply using microchips AY036P-1HF08.
MainBoard - the main board (motherboard) is an LA.MV6.D2 module using MT215DW01 V.3, 25D80VSIG, 24C32, YD1517P, TD158E, CT3257A, µP1715P (8), µ1707P (8) and others microcircuits.
The HFT-8F / 125CW tuner provides television reception and channel tuning.
Information from an alternative source:
IZUMI TLE22F400B
Panel Type (Matrix): LM215WF4 (TL) (E7)
Motherboard: MT8223L-V2.1, Tuner: CDT-3FCI2-36
T-con: LM215WF4-TLE7 P / N: 6870-1253B
LED Driver: HQ-LED60DC, Y1N8TD, 19N10
PSU: AY036P-1HF08,