Technical description and composition of the TOSHIBA 23RL933RB TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 23RL933RB
Chassis / Version: 933
Panel: LC230EUE SE A1
LED driver (backlight): TYL230TE2A01 REV1.0 KJ3-V-0
Power Supply (PSU): PE-3850-01UN-LF B55D-2BB V71A00026100 P20900143
PWM Power: A6069H, NCP1608, FSFR1800
MainBoard: PE1070 V28A00140701
IC MainBoard: CPU: MSD381USV-V6; DRAM: K4B1G1646; NAND Flash: TC58NVG1S3E; SPI Flash: MX25L1606EM2I
Tuner: ENGS7305D5F
Specifications 23RL933
TOSHIBA 23RL933RB
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs of the TOSHIBA 23RL933RB, as well as other electronic devices, is recommended to begin with an external inspection of the external and internal elements. Many visible changes in the state of the elements make it possible to determine the further direction of troubleshooting and localization of the defect. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
If the power supply module PE-3850-01UN-LF B55D-2BB V71A00026100 P20900143 fails, the external manifestations may be different, for example, the TOSHIBA 23RL933RB does not turn on at all and there is no indication of the indicator lights on the front panel. With the same symptoms, the stabilizer (converter) of the power supply to the control processor may be faulty. 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.
The reasons for the breakdown of the power switch in switching power supplies (IIPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the FSFR1800 PWM controller or broken resistors in its bundle.
In cases where the TOSHIBA 23RL933RB TV lost the image, and the sound is there and all the other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the LC230EUE SE A1 panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
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.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
In cases of attempts to repair the motherboard PE1070 V28A00140701, 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.
In cases where there is no tuning to the local television channels, you should make sure that there is a varicap supply voltage (30-33V) and other supply voltages at the terminals of the ENGS7305D5F tuner.
Remember! Attempts to self-repair by users of the TOSHIBA 23RL933RB TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba - 23RL933RB, 32RL933RB, 40RL933RB , 23RL953RB, 32RL953RB, 40RL953RB. Main PE1070.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> PE-3850-01UN-LF Power supply
Service Manuals with Schematic Diagrams 134 pages 2012 on model ------------------> 32TL933, 40TL933, 46TL933, 32TL936, 40TL936, 46TL936, 32TL963, 40TL963, 46TL963, 32TL966, 40TL966, 46TL966, 32UL975, 40UL975, 46UL975, 23RL933, 32RL933, 40RL933, 23RL936, 32RL936, 40RL936, 23SL970, 32SL970, 40SL970, 32RL953, 40RL953, 42VL963, 47VL963, 55VL963, 42XL975, 47XL975, 55XL975, 40ML933, 46ML933
The appearance of the MainBoard PE1070 is shown in the figure below:PE1070
PE1070 can be used in TVs:
TOSHIBA 23RL933RB (Panel LC230EUE SE A1), TOSHIBA 32RL933RB (Panel LTA320HN03 T03), TOSHIBA 32RL955RB (Panel LTA320HN03 T03), TOSHIBA 40RL955RB (Panel LTA400HM22 T03), TOSHIBA 32RL953RB (Panel LTA320HN03), TOSHIBA 40RL933RB (Panel LTA400HM22 LJ96-06007A).
The appearance of the power supply
Main features of the TOSHIBA 23RL933RB device:
Installed matrix (LED panel) LC230EUE SE A1.
The LED driver TYL230TE2A01 is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the TOSHIBA 23RL933RB TV are generated by the PE-3850-01UN-LF power module or its analogs using A6069H, NCP1608, FSFR1800 microcircuits.
MainBoard - the main board (motherboard) is a PE1070 module, using CPU chips: MSD381USV-V6; DRAM: K4B1G1646; NAND Flash: TC58NVG1S3E; SPI Flash: MX25L1606EM2I and others.
The ENGS7305D5F tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC230EUE-SEA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.0 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 509.184x286.416 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 5 (G to G)
Frequency: 60Hz
Lamp Type: 17S2P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
TOSHIBA 23RL933 LED TV with LC230EUE LCD display, diagonal size 23 "(58 cm) in 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 1,000,000: 1 is achieved by special control of the LEDs. V This model uses side illumination from Edge LEDs.The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD).
The 23RL933 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, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the sound system 10 W (2x5 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, component, SCART, RGB, VGA, HDMI x3, USB, Ethernet (RJ-45), WiDi. 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, 1920x1080.
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 45 watts.
Overall dimensions: with stand 548x388x183 mm, without stand 548x342x48 mm.
TV Weight: with stand: 5 kg, without stand: 4.6 kg.
Attention! The LC230EUE SE A1 panel of the TOSHIBA 23RL933 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.
