Technical description and composition of the TOSHIBA 15SLDT1 TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 15SLDT1
Panel: CLAA150XP07Q (V2301) AE009386 09EK115003 LCD
Lamp backlight: 4 Lamp CCFL
Inverter (backlight): CEF181A AE008422
PWM Inverter: TH30
MOSFET Inverter: FDS4685, FDS8449
Trans Inverter: CRT-057
Power Supply (PSU): CEF253A AE008900
PWM Power: STR-W6765, AL1015
MOSFET Power: TPC6108 (6)
MainBoard: CMF113A
IC MainBoard: Scaler: VCT 6973G B3 000; EEPROM: M24256; SOUND: LA42052;
Tuner: TAFV-W623D
Control: TM101 AE009384 076D0LT020 TRANSMITTER 000-103000520
Specifications 15SLDT1
TOSHIBA 15SLDT1
General recommendations for repairing TV LCD
Repair of the TOSHIBA 15SLDT1 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. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
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 CEF253A power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, but this happens much less often. It is advisable to start the troubleshooting of the power supply module by checking the mains fuse. If it is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and the power switch of the TPC6108 converter, which are often found in breakdown conditions in such situations.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail for no reason, which should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller STR-W6765, which can only be checked by replacement, and also other semiconductor elements (diodes, transistors, zener diodes).
If the TOSHIBA 15SLDT1 does not have an image, but there is sound and the TV is controlled from 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.
Diagnostics of the inverter can be difficult due to the operation of the protection, which is organized by the designers to prevent negative consequences or fires in emergency cases, for example, during short circuits or breaks in the lamp power supply circuit, as well as their possible depressurization. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
It should be remembered that in such cases there is a risk of failure of the power elements of the inverter and to take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
If the TV works normally from external devices, but does not tune into television channels, the TAFV-W623D tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals, as well as the power supply of varicaps (30-33V).
We recommend the owners of the 15SLDT1 TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 15SLDT1.
FIRMWARE FOR SPI FLASH -----------> M24С256 и VCT6973G TOSHIBA 15SLDT1
Service Manuals with Schematic Diagrams 96 pages 2007 on model 15SLDT1 + DVD
The appearance of the MainBoard CMF113A is shown in the figure below:CMF113A
The appearance of the power supply
Main features of the TOSHIBA 15SLDT1 device:
Installed matrix (LCD panel) CLAA150XP07Q (V2301) AE009386 09EK115003 LCD.
To power the backlight, an inverter CEF181A is used, it is controlled by a TH30 PWM controller. The transformer CRT-057 is installed in the inverter converter. As power elements of the inverter, keys of the type FDS4685, FDS8449 are used.
The necessary supply voltages for all nodes of the TOSHIBA 15SLDT1 TV are generated by the CEF253A power module or its analogs using STR-W6765, AL1015 microcircuits and TPC6108 type power switches (6).
MainBoard - the main board (motherboard) is a CMF113A module, using Scaler microcircuits: VCT 6973G B3 000; EEPROM: M24256; SOUND: LA42052; and others.
The TAFV-W623D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CPT
Model: CLAA150XP07Q
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
Brightness: 350 cd / m²
Contrast Ratio: 500: 1 (Min.)
Display Colors: 16.2M (6-bit + FRC), CIE1931 65%
Response Time: 8 (Tr + Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 20 pins
Voltage: 3.3V