Technical description and composition of the TOSHIBA 15SLDT3R TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 15SLDT3R
Panel: M156B1-L02 Rev. C1
Inverter (backlight): DPS-53BP DPS-50UP
PWM Inverter: AZ9938GN (16)
MOSFET Inverter: 4511GH (5)
Trans Inverter: IH-DP9040 (01)
Power Supply (PSU): DPS-50UP DPS-53BP
PWM Power: 6742MR (8)
MainBoard: GRU26MB 09110-1 48.72J01.011
IC MainBoard: Version M1512 TPA2008D2
Tuner: TAFT-S710D
Specifications 15SLDT3
TOSHIBA 15SLDT3R
General recommendations for repairing TV LCD
Any repair of electronic equipment begins with an external inspection of the device and diagnostics of the malfunction. In this case, visually carefully examine all the elements of the TOSHIBA 15SLDT3R TV, both internal and external. Sometimes, only by some signs can we determine the further direction of the localization of the fault. In most cases, the repairman can guess the causes of the defect and possible consequences from the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
Malfunctions of the DPS-50UP DPS-53BP power supply module can be expressed in different ways, for example, the TOSHIBA 15SLDT3R does not turn on at all and the control lamps on its front panel do not light up and do not blink, and there are no signs of operability. In this case, the diagnosis and repair of the common power supply should always be started by checking the mains fuse. When it breaks, it is advisable to check for a breakdown, first of all, all power semiconductor elements of the converter and the rectifier diode bridge of the network, as well as the large electrolytic capacitor of the filter of the network rectifier and the key transistor.
It should be remembered that in the practice of repair, usually the power keys of N-Fet converters do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the 6742MR PWM controller chip itself may be faulty (8). It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
When using the Active Power Factor Correction (CMC) circuitry in the power module, the search for faulty elements is somewhat more complicated.
In cases where the TOSHIBA 15SLDT3R TV has lost an image, and the sound is there and all other functions are operational, 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.
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.
Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
In cases of attempts to repair the motherboard GRU26MB 09110-1 48.72J01.011, it is necessary to check the operability of the power stabilizers of the microcircuits and, if possible, update the software (software). In cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - version M1512 TPA2008D2 which may require replacement with new ones.
If you suspect a malfunction of the TAFT-S710D tuner, first of all, you need to make sure that the voltage of the varicaps (30-33V) is present on the corresponding output of the tuner, as well as other voltage supplying it.
It should be remembered! Attempts to repair the TOSHIBA 15SLDT3R TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 15SLDT3R, 19SLDT3R, 22SLDT3R, 26SLDT3R
The appearance of the MainBoard GRU26MB is shown in the figure below:GRU26MB
Key Features of the TOSHIBA 15SLDT3R:
Installed matrix (LCD panel) M156B1-L02 Rev. C1.
To power the backlight, an inverter DPS-53BP is used, it is controlled by the PWM controller AZ9938GN (16). The transformer IH-DP9040 (01) is installed in the inverter converter. As power elements of the inverter, keys of the type 4511GH (5) are used.
The necessary supply voltages for all nodes of the TOSHIBA 15SLDT3R TV are generated by the DPS-50UP power supply module or its analogs using 6742MR microcircuits (8).
MainBoard - the main board (motherboard) is a GRU26MB module, using microchips version M1512 TPA2008D2 and others.
The TAFT-S710D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: M156B1-L02 4 Compatible model
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 344.232x193.536 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 500: 1
Display Colors: 16.7M (8-bit), CIE1931 65%
Response Time: 2/6 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
TOSHIBA 15SLDT3 LCD TV with M156B1-L02 LCD, 15 "diagonal size, 16: 9 format. The ratio of maximum brightness to minimum (contrast) is 1000: 1. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard 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 occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i. Supported media file formats: MP3 , WMA, MPEG4, VideoCD, SVCD, JPEG.
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 x3, S-Video, component, VGA. An output for connecting headphones is provided. 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, 1360x768.
The power consumed by the TV in the operating mode from the network is 36 watts.
Overall dimensions: 476x364x207 mm.
TV Weight: 5.1 kg.
Attention! The TOSHIBA 15SLDT3 LCD TV panel M156B1-L02 Rev. C1 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
