Technical description and composition of the TOSHIBA 26SLDT3R TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 26SLDT3R
Panel: T260XW02 V.P
Inverter (backlight): E206453-4XX
PWM Inverter: OZ9937GN (16). eZL4924 (14)
MOSFET Inverter: P1004BD NIKOS P1504EDG
Power Supply (PSU): FSP128-3F01
PWM Power: A6069 (7), SSC9502S (18)
MOSFET Power: 5N50 13N50
MainBoard: CMH144A // N5639F4393740MAM
IC MainBoard: BD7820 (5) D9323 (8) OOBCOW 9529 (5)
Tuner: ENG36E18KRF
Control: SE-R0319
Specifications 26SLDT3
TOSHIBA 26SLDT3R
General recommendations for repairing TV LCD
TOSHIBA 26SLDT3R TV, like any other, it is advisable to start repairing it by examining the internal and external visible physical visual changes. Many visible signs make it possible to determine the future direction of troubleshooting and localization of the defect. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect 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 FSP128-3F01 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 5N50 13N50 converter, which are often found in breakdown conditions in such situations.
In most cases, a breakdown of the N-Fet converter key does not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM A6069 (7), SK922 SSC9502S (18) from the manufacturer.
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 26SLDT3R TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of an inverter (converter for powering the backlight) malfunction. 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.
Diagnostics of the E206453-4XX 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 leakage. 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.
Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the inverter power elements. Upon completion of the diagnosis, all regular protection circuits should be restored.
In cases of attempts to repair the N5639F4393740MAM motherboard, it is necessary to check the operability of the power supply circuits of the microcircuits and, if possible, update the software (software). In some cases, it is necessary to check or replace (if necessary) the elements of the MB (SSB) board - BD7820 (5) D9323 (8) OOBCOW 9529 (5).
Attention to users! Independent repair of the TOSHIBA 26SLDT3R TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 15SLDT3R, 19SLDT3R, 22SLDT3R, 26SLDT3R
The appearance of the MainBoard CMH144A is shown in the figure below:CMH144A
CMH144A can be used in TVs:
TOSHIBA 26SLDT3 (Panel V260B1-L11 Rev.C1), TOSHIBA 26SLDT3R (Panel T260XW02 V.P).
Key Features of the TOSHIBA 26SLDT3R:
Installed matrix (LCD panel) T260XW02 V.P.
The inverter E206453-4XX is used to power the backlight, controlled by the OZ9937GN PWM controller (16). eZL4924 (14). As power elements of the inverter, keys of the type P1004BD NIKOS P1504EDG are used.
The necessary supply voltages for all nodes of the TOSHIBA 26SLDT3R TV are generated by the FSP128-3F01 power supply module or its analogs using A6069 (7), SSC9502S (18) microcircuits and 5N50 13N50 type power switches.
MainBoard - the main board (motherboard) is a CMH144A module, using BD7820 (5) D9323 (8) OOBCOW 9529 (5) microcircuits and others.
The ENG36E18KRF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T260XW02 VP
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: VA, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
