Technical description and composition of the TELEFUNKEN TF-LED32S7 TV, type of panel and applicable modules. The composition of the modules.
TELEFUNKEN LED
Model: TF-LED32S7
Chassis / Version: TP.VST59.P83
Panel: ST3151A05-5 CX315DLEDM
LED backlight: 01.JL.CX32101235B1
T-CON: MT3151A05-3-XC-1
LED driver (backlight): integrated into PSU
PWM LED driver: OB3350CP
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: 7N60
MainBoard: TP.VST59.P83
IC MainBoard: CPU: TSUMV59XE, SPI FLASH: W25Q32BVS, AUDIO: TPA3110D2
Tuner: CDT-3NP5I1-10
Technical Specifications TF-LED32S7
TELEFUNKEN TF-LED32S7
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The TELEFUNKEN TF-LED32S7 TV does not turn on and does not show any signs of turning on, does not respond to the control buttons or to the remote control.
In such cases, the common power source, the AC / DC voltage converter, which is combined with the elements of the main board TP.VST59.P83, is often faulty. It is necessary to measure its output voltages and, if they are absent, to check for short circuit probability in the converters power switches (7N60) and rectifier diodes.
In the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
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 the excess of maximum current or voltage values. 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) PWM SOT23-6, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
Often in such cases, there is no LED backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
When trying to identify a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the TP.VST59.P83 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its CPU chips: TSUMV59XE, SPI FLASH: W25Q32BVS, AUDIO: TPA3110D2 and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before changing the tuner CDT-3NP5I1-10, if it is not possible to tune to television channels, you should make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Once again, remind users! Attempts to independently repair the TELEFUNKEN TF-LED32S7 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
Schematic diagram ----------------> MainBoard TP.VST59.P83
The appearance of MainBoard TP.VST59.P83 and the voltage measurements at the test points are shown in the figure below:TP.VST59.P83
The TP.VST59.P83 motherboard is associated with a power supply module. It is an independent device designed on the basis of the TSUMV59Xxx multifunction processor. The repair of such a card must begin by checking the supply batteries, as well as the proper functioning of the voltage converters and linear stabilizers, necessary to supply certain processor nodes, in particular: +12 V of central power, integrated DDR + 1.8 V of memory and by 3.3 V. The supply voltage of the LCD panel is 5V or 12V. Depending on the type of panel used, it is necessary to check directly on the LVDS connector.
TP.VST59.P83 can be used on televisions:
AKAI LEA-28A08W (Panel ST2751A01-1), ERISSON 39LEN52 (Panel TLV3931-02), ERISSON 32LEN52 (Panel TLV3231-01), FUSION FLTV-32L28B (Panel TH315B051-MD1), FUSION FLTV-39LF28B (Panel V390HJ1-P02), FUSION FLTV-32L41B (Panel DBMS315LK09-C), FUSION FLTV-40LF28B (Panel DBMS400LK01-A), HYUNDAI H-LED32V18 (Panel CX315DLEDM T320XVN02.A ), MYSTERY MTV-4023LW (Panel CX390DLEDM / T390HVN04.0), ROLSEN RL-39D1305F (Panel V390HJ1-P02 Rev. C1), RUBIN RB-32D3U (Panel T320XVN01.0), RUBIN RB-39D3F (Panel CX390DLEDM), SHIVAKI STV-40LED5 (Panel V390HJ1-P01 Rev C1), SUPRA STV-LC3225AWL (Panel TH315B051-MD2), SUPRA STV-LC32T810WL (Panel TC315F3E5-A), SUPRA STV-LC32880WL (Panel HE315GH-E77GM\PW1 ), SUPRA STV-LC2825WL (Panel SM275TC30), SUPRA STV-LC32820WL (Panel TC315FJE1-MD4), SUPRA STV-LC32810WL (Panel TC315F3E5-A), TELEFUNKEN TF-LED32S7 (Panel ST3151A05-5 CX315DLEDM).
Main features of the TELEFUNKEN TF-LED32S7 device:
Installed matrix (LED panel) ST3151A05-5 CX315DLEDM.
The matrix control uses the Timing Controller (T-CON) MT3151A05-3-XC-1.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the OB3350CP PWM controller.
The power module is combined with the MainBoard and is made according to the scheme of the flyback AC / DC voltage converter using PWM SOT23-6 microcircuits and power switches of the 7N60 type.
MainBoard - the main board (motherboard) is a TP.VST59.P83 module, using CPU chips: TSUMV59XE, SPI FLASH: W25Q32BVS, AUDIO: TPA3110D2 and others.
The tuner CDT-3NP5I1-10 provides the reception of television programs and tuning to channels.