REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Saturday, 11 July 2020

REPAIR / SERVICING TV SUPRA STV-LC16810WL

 Technical description and composition of the TV SUPRA STV-LC16810WL, type of panel and applicable modules. The composition of the modules.
SUPRA LED
Model: STV-LC16810WL
Chassis / Version: V4M11
Panel: B156XTN02.2 // B156RW01 V.1
T-CON: 15B51-C02 B156XTN02.0 Ctrl BD
LED driver (backlight): integrated into T-CON
Power Supply (PSU): Adapter 12V
MainBoard: T.VST59.62
IC MainBoard: CPU TSUMV59XU-Z1, Flash 25Q322, TDA-1517P, TPS54329 (PWM Step-down), BL8024 (PWM Step-down marker GG ..)
Tuner: CDT-3NP5I1-10
Control: IR: RMT155 UL94V0
Technical Specifications STV-LC16810WL
SUPRA STV-LC16810WL
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs SUPRA STV-LC16810WL, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. From the visible external changes in the state of the components, it is often possible to determine the further direction of the troubleshooting before making the necessary measurements. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the soldered terminals of transformers or heating elements are detected, it is advisable to establish the causes and consequences of the malfunction that has arisen, as well as to check the connected elements and assemblies.
Malfunctions of the power module can be expressed in different ways, for example, SUPRA STV-LC16810WL does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the stabilizer (converter) of the processor power may turn out to be faulty. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the rectifier bridge of the mains voltage and the power switch (s) of the converter.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is checked by replacing it with a known good one.
If the SUPRA STV-LC16810WL lacks an image but has sound, the backlight LEDs of the B156RW01 v.1 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.
A malfunction in the backlight circuits often occurs due to an open in the power circuit of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the rations of their terminals, as well as the reliability of the connections in the connectors and rations of the terminals.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source.
Repair or diagnostics of the T.VST59.62 motherboard should begin by checking the stabilizers or power converters of its microcircuit. If necessary, update the software (software).
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair it is necessary to check its elements - CPU TSUMV59XU-Z1, Flash 25Q32 and replace failed chips with new ones. Some malfunctions can be associated with the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
Before replacing the tuner CDT-3NP5I1-10, if there is no tuning for the channels, you must first check the supply voltage at its terminals.
Owners and users of the SUPRA STV-LC16810WL TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-serviceability of the device!


FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC16810WL, Main: T.VST59.62, Panel: B156RW01 v.1
 The appearance of MainBoard T.VST59.62 is shown in the figure below:
T.VST59.62
It is advisable to start repairing the T.VST59.62 motherboard based on the TSUMV59Xxx multifunction processor by checking the performance of linear voltage stabilizers or voltage converters necessary to provide power to the processor nodes - 1.2V core power, DDR 1.8V memory and Stand-by 3.3V mode . If there is no image, but if the display backlight is working properly, you should check the power supply voltage of the LCD panel 5V or 12V, depending on the type of panel used.
T.VST59.62 can be used on TVs:
Akai LEA-22V21M (Panel A215ED1DA3-1), ERISSON 22LEN18 (Panel M215HGJ-L21), ERISSON 16LEN18 (Panel N156BGE-L11 Rev.C1), ERISSON 24LEN18 (Panel M236HGE-L20), Fusion FLTV-16L10B (Panel T156LL10-AW4), FUSION FLTV-24T9 (Panel M240HW01 V.B), FUSION FLTV-16T9 (Panel B156XTN02), FUSION FLTV-16T9D (Panel T156LL10-AW4), HYUNDAI H-LED19V13 (Panel CX185LEDM ), SUPRA STV-LC19811FL (Panel M185XTN01.3), SUPRA STV-LC19820WL (Panel LM185WH2), SUPRA STV-LC22820FL (Panel LS215AFTNM), SUPRA STV-LC18250WL (Panel B173HW02 V.1), SUPRA STV-LC22810FL (Panel M215HGE-L21 Rev.C1), SUPRA STV-LC16810WL (Panel B156RW01 V.1), SUPRA STV-LC18251FL (Panel N173HGE-L11 Rev. C1), SUPRA STV-LC22811FL (Panel 1080p Full HD 1920x1080), SUPRA STV-LC1982WL (Panel 1080p Full HD 1920x1080), TELEFUNKEN TF-LED22S3 (Panel M215HGE-P02).
Main features of the SUPRA STV-LC16810WL device:
Installed matrix (LED panel) B156XTN02.2 or B156RW01 V.1.
The matrix control uses the Timing Controller (T-CON) 15B51-C02.
An integrated LED driver is used to power the backlight LEDs.
To power all internal components of the SUPRA STV-LC16810WL TV, an external adapter 12V type is used.
MainBoard - the main board (motherboard) is a T.VST59.62 module, using CPU chips TSUMV59XU-Z1, Flash 25Q322, TDA-1517P, TPS54329 (PWM Step-down), BL8024 (PWM Step-down marker GG .. ) and others.
The tuner CDT-3NP5I1-10 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: B156XTN02.2 8 Compatible model
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 344.232x193.536 mm
Shape Style: Wedge (PCBA Bent, Depth? 5.2mm)
Surface: Glare (Haze 0%), Hard coating (3H), Reflection 4.3%
Brightness: 200 cd / m²
Contrast Ratio: 500: 1
Display Colors: 262K (6-bit), CIE1931 45%
Response Time: 8 (Tr + Td)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 6-bit), 40 pins
Voltage: 3.3V
SUPRA STV-LC16810WL LED TV with B156RW01 LCD display, 16 "(41 cm) diagonal size in 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 10000: 1 is achieved by special control of the LEDs depending on the illuminated areas in the plot, this model uses an LED panel with the end position of the backlight LEDs - Edge LED. The TV features include viewing 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 input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, DivX, MKV, Jpeg.
The power of the acoustic system of sound 6 W (2x3 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, USB. 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, 1360x768.
The power consumed by the TV in the operating mode from the network is 36 watts.
Overall dimensions: With stand 750x555x180 mm, Without stand 750x515x55 mm.
Attention! The B156RW01 V.1 panel of a SUPRA STV-LC16810WL 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.