Technical description and composition of the TOSHIBA 26WL66ZS TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 26WL66Zs
Panel: T315XW01 V5
T-CON: T315XWO1_V5 AUO-016K1 0639 T039, EM638325TS-66
LED driver (backlight): VIT71014.50 LOGAH REV.2
PWM LED driver: OZ964SN, LM393, LM339 bD358
Trans LED driver: T51-0084-211
Power Supply (PSU): PE0117 N-1 V28A00016401, PE0117 N-2 V28A00016402
PWM Power: STR-Z4569, STR-W6765, BA00JC5W (Line Stab)
MOSFET Power: D2396, D413, D454
MainBoard: PE0119 V28A000163A1
IC MainBoard: FLI8548H-LF, HY5DU281622ETP-4, TMDS341, MSP 3410G C12
Tuner: ENG37A13GF
Control: CT-90253
Specifications 26WL66R
TOSHIBA 26WL66ZS
General repair guidelines for TV LCD LED
It is advisable to start repairing the TOSHIBA 26WL66Zs TV with a careful external examination of both internal and external elements. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. 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 26WL66ZS TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power supply module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some TOSHIBA models. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller microcircuit STR-Z4569, STR-W6765, BA00JC5W, which it is desirable to check by replacement, are subject to verification.
If the TOSHIBA 26WL66ZS lacks an image but has sound, the backlight LEDs on the T315XWO1_V5 panel or their power converter may malfunction. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
In cases of attempts to repair the motherboard PE0119 V28A000163A1, 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.
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - FLI8548H-LF, HY5DU281622ETP-4, TMDS341, MSP 3410G C12 and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
If the TV works normally from external devices, but does not tune into television channels, the ENG37A13GF 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).
Owners and users of the TOSHIBA 26WL66ZS TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 26WL66E, 26WL66T, 26WL66R, 26WL66A, 32WL66E, 32WL66T, 32WL66R, 32WL66A, 37WL66E, 37WL676T, 37WL66R. PE0117 - PE0216 - PE0119
The appearance of MainBoard PE0119 is shown in the figure below:PE0119
PE0119 can be used in TVs:
TOSHIBA 26WL65Rs (Panel T260XW02 V.5 75002324), TOSHIBA 26WL66Zs (Panel T315XW01 V5), TOSHIBA 32WL66R (Panel T315XW01 V.5), TOSHIBA 32WL66Rs (Panel V315XW02 V.1), TOSHIBA 47WL66Rs (Panel V470H1-L02 Rev.C4), TOSHIBA 32WL65R 32WL65Rs (Panel T315XW02 V.1).
The appearance of the power supply
Main features of the TOSHIBA 26WL66ZS device:
Installed matrix (LED-panel) T315XW01 V5.
The matrix control uses the Timing Controller (T-CON) T315XWO1_V5.
The LED driver VIT71014.50 is used to power the backlight LEDs, it is controlled by the OZ964SN, LM393, LM339 bD358 PWM controller. The transformer T51-0084-211 is installed in the converter of the LED driver.
The required supply voltages for all nodes of the TOSHIBA 26WL66ZS TV are generated by the PE0117 power module or its analogs using the STR-Z4569, STR-W6765, BA00JC5W (Line Stab) microcircuits and power switches of the D2396, D413, D454 type.
MainBoard - the main board (motherboard) is a PE0119 module, using chips FLI8548H-LF, HY5DU281622ETP-4, TMDS341, MSP 3410G C12 and others.
The ENG37A13GF tuner provides TV reception and channel tuning.
Information from an alternative source:
TOSHIBA 26WL66Zs
Panel Type (Matrix): T260XW02, T-Con: T315XWO1_V5, AUO-016K1 0639 T039, EM638325TS-66
Motherboard: PE0119 V28A000163A1, FLI8548H-LF, HY5DU281622ETP-4, TMDS341
PSU: PE0117 N-1 V28A00016401, STR-Z4569 (?), STR-W6765, SUB
PSU: PE0117 N-2 V28A00016402, BA00JC5W, KIA7809A, D2396 x2, CE-1059 x4
Inverter: VIT71014.50 LOGAH REV.2, OZ964SN, LM393 x2, LM358, LM339, 78M05, D413 x4, D454 x4, Tr-r: T51-0084-211 x8, AV: PE0118 A-1 V28A00016501, MSP 3410G C12, TA8246AHQ, CD4053B x2, CD4052B, T5CB5-6G52, Tuner: ENG37A13GF
Remote control: CT-90253
Additional technical information about the panel:
Brand: AUO
Model: T315XW01 V5A
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 15/5 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V