Technical description and composition of the TOSHIBA 32WL66RS TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 32WL66Rs
Chassis / Version: PE0119B
Panel: V315XW02 V.1
T-CON: 05A30-1A T315XW02 V0
Inverter (backlight): 4H.V0708.381 / B1 E206453 V070
PWM Inverter: OZ964SN (20), ST339 (14), ST324 (14), ST358 (8)
MOSFET Inverter: P2804ND5G (5)
Trans Inverter: 4010Q645 250 (GP)
Power Supply (PSU): PE0117 G-2, PE0117G-1
PWM Power: STR-W6765
MainBoard: PE0119 B, PE0216 A-1 V28A0002090
IC MainBoard: FLI8548H-LF, HY5DU281622ETP-4
Tuner: ENG39A07GF
Specifications 32WL66R
TOSHIBA 32WL66RS
General recommendations for repairing TV LCD
Possible malfunctions
- The TOSHIBA 32WL66RS does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
In such cases, the PE0117 power supply is usually faulty. It is then necessary to measure its output voltages and, if they are absent, it is necessary to check the power switches and rectifier diodes of the converters for a short circuit probability.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) STR-W6765, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or inverter. If all the electrolytic capacitors of the filter according to the power supply of the inverter are working, make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the PE0119 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Board repair and replacement of FLI8548H-LF, HY5DU281622ETP-4 microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all, check the voltage of the tuner ENG39A07GF and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
TV users and owners must remember that attempts to repair the TOSHIBA 32WL66RS TV independently without the appropriate qualifications and necessary experience can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 26WL66E, 26WL66T, 26WL66R, 26WL66A, 32WL66E, 32WL66T, 32WL66R, 32WL66A, 37WL66E, 37WL676T, 37WL66R. PE0117 - PE0216 - PE019
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
Key Features of the TOSHIBA 32WL66RS:
Installed matrix (LCD panel) V315XW02 V.1.
The matrix control uses the Timing Controller (T-CON) 05A30-1A.
To power the backlight, an inverter 4H.V0708.381 is used, it is controlled by the PWM controller OZ964SN (20), ST339 (14), ST324 (14), ST358 (8). A transformer 4010Q645 250 (GP) is installed in the inverter converter. As power elements of the inverter, keys of the type P2804ND5G (5) are used.
The necessary supply voltages for all nodes of the TOSHIBA 32WL66RS TV are generated by the PE0117 power module or its analogs using STR-W6765 microcircuits.
MainBoard - the main board (motherboard) is a PE0119 module, with the use of chips FLI8548H-LF, HY5DU281622ETP-4 and others.
The ENG39A07GF tuner provides TV reception and channel tuning.