Technical description and composition of the TOSHIBA 46SL833R TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 46SL833R
Panel: T460HF02 V.1
T-CON: T315HW07 V9 CTRL BD
LED driver (backlight): T420HW08 V0 LED Driver BD
PWM LED driver: MAX16814B (20), RM5103 20111 (14),
MOSFET LED driver: P1825AS, P3506DD
Trans LED driver: LZ PJ002. L00
Power Supply (PSU): PA-3201-01TS-LF 1300XFU6 Rev: 03 REV: B 75022759
PWM Power: A6069H (7)
MainBoard: PE0982 V28A001292A1
IC MainBoard: TMPM330FYFG, D2817R, RTL8304, CS48540CQZ
Tuner: ENGS7305D5F
Control: CT-90369
Specifications 46SL833
TOSHIBA 46SL833R
General repair guidelines for TV LCD LED
TOSHIBA 46SL833R, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. 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. 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.
Malfunctions of the 1300XFU6 Rev: 03 PA-3201-01TS-LF REV: B 75022759 power supply module can be expressed differently, for example, the TOSHIBA 46SL833R does not turn on at all and the control lights on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) 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 A6069H PWM controller chip itself may be faulty (7). It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If the TOSHIBA 46SL833R does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the backlight circuits of the T460HF02 V.1 panel is likely. The LEDs or the power converter - LED driver 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 LED driver, and check the LEDs, connecting obviously known good diagnostics.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
It should be remembered that it is not possible to determine the break in the LED lines without disassembling the panels using 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.
In cases of attempts to repair the motherboard PE0982 V28A001292A1, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Testing or replacing elements D2817R, RTL8304, CS48540CQZ, TPMP330FYPG requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
Before replacing the tuner ENGS7305D5F, if there is no tuning to the channels, first you need to check the supply voltage at its terminals, including the power supply of varicaps (30-33V).
Attention to users! Self-repair of the TOSHIBA 46SL833R TV without the appropriate qualifications and experience can lead to its complete non-repairability!
To reduce the backlight current in LED drivers with a PWM controller MAX16814 (TSSOP20 MAX16814B), it is necessary to proportionally increase the total resistance of the resistors from terminal 10 (SETI) to the housing. The maximum current in each of the four channels (in milliamperes) For resistance, Rseti (in kilo-ohms) is determined from the ratio 1500 / Rseti.
The appearance of MainBoard PE0982 is shown in the figure below:PE0982
PE0982 can be used in TVs:
TOSHIBA 42UL863R (Panel T420HF04 V.1 LED 75024795), TOSHIBA 46SL833R (Panel T460HF02 V.1), TOSHIBA 46UL863R (Panel T460HF02 V.1), TOSHIBA 37SL833R (Panel T370HF01 V.0), TOSHIBA 32SL833R (Panel T315HF01 V.0).
The appearance of the power supply
Main features of the TOSHIBA 46SL833R device:
The matrix (LED panel) T460HF02 V.1 is installed.
The matrix control uses the Timing Controller (T-CON) T315HW07.
The LED driver T420HW08 is used to power the backlight LEDs, it is controlled by the PWM controller MAX16814B (20), RM5103 20111 (14) ,. The LZ PJ002 transformer is installed in the LED driver converter. L00. As power elements of the LED driver, keys of the type P1825AS, P3506DD are used.
The necessary supply voltages for all nodes of the TOSHIBA 46SL833R TV are generated by the PA-3201-01TS-LF power module or its analogs using A6069H microcircuits (7).
MainBoard - the main board (motherboard) is a PE0982 module, using TMPM330FYFG, D2817R, RTL8304, CS48540CQZ chips and others.
The ENGS7305D5F tuner provides TV reception and channel tuning.
Trademark: TOSHIBA, Model: 46SL833.
Briefly from the TV: LCD, LED backlight, 46 ", 1920x1080, 1080p Full HD, sound: 20W, HDMI: 4, Internet access, Smart TV.
The official Toshiba website has firmware (software update) for models 46SL833R (19.1.61.7), 46SL833N (19.1.49.236), 46SL833G (19.1.61.14), 46SL833F (19.1.49.236).
The composition uses MainBoard PE0982 V28A001292A1 and an LCD panel (matrix) T460HF02 V.1.
Power Supply Unit (PSU) PA-3201-01TS-LF 75022759 Power Supply.
Technical description
TOSHIBA 46SL833 LED TV with T460HF02 LCD, 46 "(117 cm) diagonal size in 16: 9 format. The required screen brightness of 450 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 4000: 1 Dynamic contrast ratio of 4,000,000: 1 is achieved by special control of the operation of the LEDs.This model uses side illumination from Edge LEDs.The design and technical capabilities of the TV include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels her in the graphic decomposition of the standard 1080p (Full HD).
The 46SL833 is equipped with SMART software, integrated applications and the ability to work on the Internet. Connecting to the Internet can be done via Wi-Fi. The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, DivX, MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, component, SCART, RGB, VGA, HDMI x4, USB x2, Ethernet (RJ-45). 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, 1280x1024, 1360x768.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
The power consumed by the TV in the operating mode from the network is 137 watts.
Overall dimensions: with stand 1078x726x287 mm, without stand 1078x657x36 mm.
TV Weight: with stand: 22 kg, without stand: 17.85 kg.
Attention! The T460HF02 V.1 panel of the TOSHIBA 46SL833 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.
