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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Saturday 2 May 2020

REPAIR / SERVICING TV MYSTERY MTV-3207W

Technical description and composition of the MYSTERY MTV-3207W TV, type of panel and applicable modules. The composition of the modules.
MYSTERY
Model: MTV-3207W
Panel: V315B3-L04 rev.c1
T-CON: V315B3-C04
Inverter (backlight): T87I029.14
PWM Inverter: BD9215FV
MOSFET Inverter: AOD4184
Power Supply (PSU): MLT666
PWM Power: LD7535BL (PWM 6 pin)
MainBoard: 228-100326009 V.100420 // MSTV3208-ZC01-01
IC MainBoard: h5du2562gtr-e3c
Tuner: F21WT-3BAR-E
MYSTERY
Model: MTV-3207W
Chassis / Version: MSTV3208-ZC01-01
Panel: HV320WX2-110
T-CON: HV320WXC-1007061 NT71180MFG
Inverter (backlight): TV3203-ZC02-02
PWM Inverter: OB3328
MOSFET Inverter: Q209, Q210: APM4015P; Q211, Q212: APM4010N
Power Supply (PSU): TV3206-ZC02-01
MainBoard: MSTV3208-ZC01-01
IC MainBoard: CPU: MST6E48RHS-LF-Z1, SPI Fash: FL032K1F, DDR: H5P95162FFR, Sound: TPA3113D2
Tuner: F21WT-3BAR-E
Technical Specifications MTV-3207W
MYSTERY MTV-3207W
General recommendations for repairing TV LCD
Repair of the MYSTERY MTV-3207W TV is recommended to begin with a thorough external inspection and troubleshooting. It is advisable to carefully examine the internal and external components. Sometimes, only by some signs can we determine the further direction of the localization of the fault. In most cases, the repairman can guess the causes of the defect and possible consequences from the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and the buttons, does not make any sounds or any signs of operability when turned on, there is a certain chance that the MLT666 power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, but this happens much less often. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the possibility of an avalanche or thermal breakdown.
It should be borne in mind that in the repair practice it is extremely rare that key transistors of the N-FET type fail for no reason that should be looked for by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, either dried electrolytic capacitors or dangling resistors of the primary circuit of the PSU, involved in the stabilization process. In this case, all semiconductor elements of the strapping of the LD7535BL PWM controller microcircuit are subject to verification, which it is desirable to verify by replacement.
It is somewhat more difficult to look for a malfunction in the converter of the power module with an active KKM (power factor corrector).
If there is no image when you turn on the MYSTERY MTV-3207W, or it appears for a second and disappears completely, but there is sound, most likely either the backlight lamps or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
Repair of the inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety during depressurization of lamps, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits to be able to make the necessary measurements at the control points of the circuit.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
Repair of the MSTV3208-ZC01-01 motherboard must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. When repairing an MB board, you need to check its components - CPU: MST6E48RHS-LF-Z1, Fash: FL032K1F, Sound: TPA3113D2, Tuner: F21WT-3BAR-E. Defective items should be replaced.
Once again, remind users! Attempts to self-repair a TV MYSTERY MTV-3207W without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    TV3206-ZC02-01

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    MLT-666

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    MSTV3208-ZC01-01

FIRMWARE FOR SPI FLASH  ----------->   MYSTERY MTV-3207W (V5K03). MB: MSTV3208-ZC01-01, CPU: MST6M48RXS-LF-SJ, FLASH: Q32A-100HIP, Panel: T315XW03 V.3

 The appearance of the MainBoard MSTV3208-ZC01-01 is shown in the figure below:
The motherboard MSTV3208-ZC01-01 is made using the multifunction microprocessor MST6M48RHS-LF, which includes a scaler (graphic controller-scaler). To organize the work of the processor, the external RAM H5PS5162GFR 512Mb DDR2 SDRAM in BGA version and SPI FLASH 25Q32 (4Mb) are used. To provide power to the processor core, a DC / DC converter with an output voltage of 1.2V is used, assembled on the basis of the MP1482 PWM controller. Other nodes of the processor are powered by linear voltage stabilizers 2.5V, 3.3V. 1.8V voltage is used to power the DDR RAM, 3.3V is needed for the SPI FLASH ROM.
It is advisable to start the MainBoard repair by checking the supply voltage in Stand-by mode 5V and 3.3V. In operating mode, check the operation of all linear stabilizers and the DC / DC converter. If there is a backlight and there is no image, you need to check the power of the 5V or 12V panel (depending on the type of LCD panel), which should be present directly on the LVDS connector.
If the indicator signals Stand-by mode and does not respond to the remote control and control buttons, it is recommended to update the SPI Flash software. Taking into account the glitchiness of Winbond SPI chips, it is advisable to replace them with new ones in case of software failures.
MSTV3208-ZC01-01 can be used in TVs:
BBK LEM2648SD (Panel V260B1-LE9 revC1), BBK LEM3248SD (Panel HV320WX2-130 (B3)), BBK LMP3229HDU Ver1 (Panel T315HW02 v.7), BBK LMP3229HDU Ver2 (Panel T315HW04 V7), BBK LEM2649HD (Panel V260H1-LE7 Rev C1), MYSTERY MTV-2607W (Panel V260H1-L05), MYSTERY MTV-3206 (Panel T315XW04 V.7), MYSTERY MTV-3207W (Panel V315B3-L04 rev.c1), MYSTERY MTV-3213LW (Panel T315XW04 V.8), MYSTERY MTV-2220LW (Panel CLAA215FA15), MYSTERY MTV-3207W (Panel HV320WX2-110), MYSTERY MTV-2614LW (Panel V260H1-LE6), MYSTERY MTV-3208WH (Panel V315H1-L02), MYSTERY MTV-2411LW (Panel V236H1-LE5 Rev.C1), MYSTERY MTV-2618LW (Panel V260B2-LE11), MYSTERY MTV-2211LW (Panel CLAA215FA10), MYSTERY MTV-2414LW (Panel V236H1-L01), MYSTERY MTV-2611LW (Panel V260H1-LE6 Rev.C1), MYSTERY MTV-3206W (Panel T315XW03 V.3), MYSTERY MTV-3211LW (Panel V315H3-LE2 Rev. C1), MYSTERY MTV-4207WH (Panel T420HW09 V.1), MYSTERY MTV-1921LD (Panel HT185WX3).
Main features of the MYSTERY MTV-3207W device:
Installed matrix (LCD panel) HV320WX2-110.
The matrix control uses the Timing Controller (T-CON) HV320WXC-1007061.
To power the backlight, the inverter TV3203-ZC02-02 is used, it is controlled by the PWM controller OB3328. As power elements of the inverter, keys of the type Q209, Q210 are used: APM4015P; Q211, Q212: APM4010N.
The formation of the necessary supply voltages for all nodes of the MYSTERY MTV-3207W TV is carried out by the TV3206-ZC02-01 power supply module, or its analogs.
MainBoard - the main board (motherboard) is an MSTV3208-ZC01-01 module using CPU chips: MST6E48RHS-LF-Z1, SPI Fash: FL032K1F, DDR: H5P95162FFR, Sound: TPA3113D2 and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
Information from an alternative source:
MYSTERY MTV-3207W Version V7L03
Panel Type (Matrix): T315XW04 V.7
Motherboard: MSTV3208-ZC01-01, Tuner: F21WT-3BAR-E
Invertor: TV3202-ZC02-02 (A) P / N: 303C3203063, B40695, AV IN: TV3211-ZC15-01 (A) P / N: 303C3211054, AV IN: TV3211-ZC22-01 (B) P / N: 303C3211053
PSU: KB-5150 TV3206-ZC02-01 (A) P / N: 303C3206063, OB6563CP, B39849T
PSU: TV3206-ZC02-01 (A) P / N: 303C3206063 Scheme TV3206-ZC02-01,
MYSTERY MTV-3207W TV with HV320WX2-110 LCD, 32 "(81 cm) diagonal size in 16: 9 format. 300 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Contrast as the ratio of maximum brightness to the minimum is 1000: 1. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for 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 happens in with . Andartah 480i, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats: MP3, JPEG.
The power of the sound speaker system 16 W (2x8 W) is provided by 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 x2, audio x3, component, SCART, RGB, VGA, HDMI x2, 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: 800x600, 1024x768.
The power consumed by the TV in the operating mode from the network is 50 watts.
Dimensions: With stand 642x444x209 mm, Without stand 570x345x70 mm.

Posted By: FRANK at 05:06
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