REPAIRING AND NOT THROWING AWAY

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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Sunday, 28 June 2020

REPAIR / SERVICING TV FUSION FLTV-40K62

Technical description and composition of the FUSION FLTV-40K62 TV, type of panel and applicable modules. The composition of the modules.
FUSION LED
Model: FLTV-40K62
Chassis / Version: TP.VST59S.PC1
Panel: 720p HD, 1366x768
T-CON: 14Y_GA_40FMB7S4LV0.2
LED driver (backlight): integrated into MainBoard
PWM LED driver: OB3350CP
MOSFET LED driver: AOD4454
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: TP.VST59S.PC1
IC MainBoard: SPI Flash: 25q32; SOUND: TPA3110LD2
Tuner: NoName
Technical Specifications FLTV-40K62
FUSION FLTV-40K62
General repair guidelines for TV LCD LED
Repair of electronic devices, including the FUSION FLTV-40K62 TV, it is advisable to start with an external examination of its external and internal elements. Many visible changes in the state of the elements make it possible to determine the future direction of the troubleshooting. Useful tips can include swollen capacitors, ring cracks formed in the soldered terminals, a charred paint layer on the resistors, signs of overheating of the board, and many other external signs familiar to experienced repairmen.
If the TV does not turn on, no control lights are on or blinking, there are no sounds when you turn on, there is not the slightest sign of operability - the most likely malfunction is in the power module. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip may also cause a breakdown of the power switch of the converter.
In cases where the FUSION FLTV-40K62 TV has lost its image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the panel 720p HD, 1366x768). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
To check the health of the LEDs, as well as the contact connections in the ruler circuit, it is necessary to disassemble the panel.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can test each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the LED will light up slightly.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update 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 SPI Flash chips: 25q32; and other possible malfunctioning components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by warming up.
Remember! Attempts to self-repair by users of the FUSION FLTV-40K62 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!



FIRMWARE FOR SPI FLASH  ----------->   FUSION FLTV-40K62, Main: TP.VST59S.PC1


  Backlight Current Limit:
There are four series-connected resistors on the board - 1.5 Ohm, 1.5 Ohm, 3 Ohm, 3 Ohm from the cathodes of the LEDs to ground. You can reduce the backlight current by about 30% by removing one 1.5 Ohm resistor.
Repair MainBoard
The appearance of MainBoard TP.VST59S.PC1 is shown in the figure below:
TP.VST59S.PC1
TP.VST59S.PC1 can be used in TVs:
FUSION FLTV-40K62 (Panel 720p HD 1366x768), HYUNDAI H-LED32V26 (Panel ST3151A04-3 / (CS)), TELEFUNKEN TF-LED32S26 (Panel MT3151A04-1-XC-9), TELEFUNKEN TF-LED32S11 (Panel E32-9100).
Main features of the FUSION FLTV-40K62 device:
Installed matrix (LED-panel) 720p HD, 1366x768.
The matrix control uses the Timing Controller (T-CON) 14Y_GA_40FMB7S4LV0.2.
To power the backlight LEDs, a converter is used, combined with the TP.VST59S.PC1 main board, controlled by the OB3350CP PWM controller. As power elements of the LED driver, keys of the AOD4454 type are used.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a TP.VST59S.PC1 module, using SPI Flash chips: 25q32; SOUND: TPA3110LD2 and others.
The NoName tuner provides television reception and channel tuning.
FUSION FLTV-40K62 TV with a 720p LCD display, 40 "(102 cm) diagonal size in 16: 9 format. The LED panel of this TV has LED backlighting - Edge LED. You can view images in high quality HD with a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the sound system 10 W (2x5 W) provides 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, audio x2, component, VGA, USB. 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.
Attention! The 720p HD, 1366x768 panel of the FUSION FLTV-40K62 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.
Posted By: FRANK at 09:41
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