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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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Tuesday, 12 February 2019

TCL - MT01_DE200 _ SERVICE MODE_SOFTWARE UPDATE_SERVICE HITS

TCL - MT01_DE200 _ SERVICE MODE_SOFTWARE UPDATE_SERVICE HITS



TO ENTER FACTORY MENU [SERVICE MENU]
  • Switch On the TV.
  • Reduce Volume to Minimum [0].
  • Press "Mute' key, then press {9,7,3,5} by remote control.
  • Press (►) key to enter the sub-menu, and press "Menu" key to return to Main Menu.
ANALOG BOARD SOFTWARE UPDATE
  • Connect PC, update board, and J3 on the main board with serial line.
  • Provide the STB +5V for main board.
  • Open "MtkTool.exe" in MTK TOOL program, and set the parameter as below.

  • Press "Browse" for selecting the SW.
  • Press 'Upgrade" to download the SW.  It will be OK when it show 100%.
  • After downloading SW, it will be long time for Initializing EEPROM.
SOLUTION-2
  • Preoperative is same as above.
  • Set SYSTEM -> Factory key on Factory Menu to OFF.
  • Connect the device as below.
  • Update the SW follow solution  (3), (4), (5), (6)

  • LCD32MT01M1 is designed for Europe, using 32 inch CM1 panel. The main chip is MTK8201. Support 1x RF in, 0.5x SCART, 1XSCART, 1xYPbPr, 1xVGA, 1xside AV include YC input, 2xHDMI,1x headphone out, 1xDVB-T input.
DIGITAL MODULE SERVICING AND DEBUG HINTS

 Check PCB and each section power supply: 12V, 5V, 1.2V,1.8V ,3.3V.
 Switch on the power, then measure the signal of output port of video and audio.  If no output, check the following point:
1) video output of CPU section.
2) 4Mhz clock of the tuner output
3) Output of chip 74AHC1GU04( position U24 of schematic). 4Mhz clock signal to CUP(PNX8314).
4) Signal of SDRAM and flash chip when working .
5) Audio DAC ( component’s position U6 of schematic.

    Enter the menu’s manual research item, and set appointed channel number, check the signal indicator on TV screen.
 Normally there is a signal level display on the menu. If no displaying for the signal state indicated information, check the following point:
1) 4Mhz clock signal of the tuner output,
2) Output of chip 74AHC1GU04(component’s position U23 of schematic).
3) Else channel decoder schematic section.
4. When it display the signal state indicated information, Press “OK’ button, and research program.
 It will not play the program if not get the program list. Check: components of the TS output from TDA10046 to CPU.
 Inset the CAM card( PCMCIA CARD) to CI connector, the integrated system will detect it. if system has not found it, please check:
1) Input clock of Chip CIMAX SP2, The clock outputs from XD1 (component XD1 of schematic) to chip CIMAX SP2.
2) Components and schematic of CI section.
 If not communication from ATV to digital module, check: I2C of the ATV( MT01 section) and digital module.
Posted By: FRANK at 01:56
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