Technical description and composition of the IZUMI TL15H603B TV, type of panel and applicable modules. The composition of the modules.Izumi
Model: TL15H603B
Chassis / Version: T.VST26.3B 10104
Panel: LTA150XH-L06
Inverter (backlight): IVD12-24B6 PCB704081
PWM Inverter: S494 838J (16)
MOSFET Inverter: STM6960 (8 pin)
Trans Inverter: YOT-3559A
Power Supply (PSU): adapter PDN-48-48A
MainBoard: T.VST26.3B 10104
IC MainBoard: YD1517P, AZ1084S2, mP1482DN (8), CBT3257AD (16)
Tuner: TDQ-ATF27WT-F
Technical Specifications TL15H603B
IZUMI TL15H603B
General recommendations for repairing TV LCD
TV IZUMI TL15H603B, like any other, it is advisable to start repairing it by inspecting the internal and external visible physical visual changes. Sometimes, only by some signs can we determine the further direction of the localization of the malfunction. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the IZUMI TL15H603B does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a malfunction of the power adapter PDN-48-48A. When diagnosing and repairing the adapter PDN-48-48A power supply, it is first necessary to check the fuse, and if it breaks, the power switch and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. 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.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
If the IZUMI TL15H603B TV does not have an image, but there is sound, the malfunction should be sought in the power converter of the backlight (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
The operation of the power circuits of the inverter and the backlight in the normal mode are controlled by special protection, which is organized for fire safety, for example, to disconnect during short circuits or breaks in high-voltage connections or when the lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
When diagnosing with the protection off, special precautions must be taken, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
Diagnostics and repair of the motherboard T.VST26.3B 10104 is carried out by checking the performance of power stabilizers or updating the software (software). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements YD1517P, AZ1084S2, mP1482DN (8), CBT3257AD (16).
Owners and users of the IZUMI TL15H603B TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Main T.VST26.3B
The appearance of the MainBoard is shown in the figure below:T.VST26.3B
T.VST26.3B can be used on TVs:
HYUNDAI H-LCDVD2200 (Panel LTM220MT05 010), HYUNDAI H-LCD2216 (Panel M216H1-L01), IZUMI TL15H603B (Panel LTA150XH-L06), IZUMI TL15H605B (Panel LTM150XH-L06), MYSTERY MTV-2225WD (Panel V216B1-L04 REV.C1), MYSTERY MTV-2205W (Panel V216B1-L01), MYSTERY MTV-1605W (Panel HT156WX1-100).
Main features of the IZUMI TL15H603B device:
Installed matrix (LCD panel) LTA150XH-L06.
To power the backlight, an IVD12-24B6 inverter is used, it is controlled by the S494 838J PWM controller (16). The transformer YOT-3559A is installed in the inverter converter. As power elements of the inverter, keys of the STM6960 type (8 pin) are used.
To power all internal nodes of the IZUMI TL15H603B TV, an external adapter type PDN-48-48A is used.
MainBoard - the main board (motherboard) is a T.VST26.3B module, using YD1517P, AZ1084S2, mP1482DN (8), CBT3257AD (16) and others.
The TDQ-ATF27WT-F tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA150XH-L06
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.0 inch
Resolution: 1024x768, XGA
Display Mode: TN, Normally White, Transmissive
Active Area: 304.1x228.1 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 400: 1
Display Colors: 16.2M (6-bit + FRC), CIE1931 65%
Response Time: 5/20 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 20 pins
Voltage: 3.3V