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 !

Monday, 25 February 2019

PANASONIC TC L42D30 SERVICE MODE AND BLINKING CODES

PANASONIC TCL42D30 SERVICE MODE AND BLINKING CODES

After exchange parts, check and adjust the contents of adjustment mode.
HOW TO ENTER SERVICE MODE

  • While pressing (Vol -ve) button on the front panel of the TV, and press 'Info" button on the remote control [3times, within 2 seconds].
KEY COMMANDS
[1] Button => Main items selection in forward direction.
[2] Button => Main items selection in reverse dirction.
[3] Button => Sub items selection in forward direction.
[4] Button => Sub items selection in reverse direction.
[VOL] Button => Change the value of sub items in forward or reverse direcion.
TO EXIT FROM SERVICE MODE
Switch OFF the Power, using Power Button on the front panel of the TV.
HOTEL MODE
Is used to restrict a function for Hotels.
  • Access command to the hotel mode setup menu:
  • While pressing the (Vol-ve) button on the main unit, press 'Input" button of the remote control 3 times within 2 seconds.
  • To exit from hotel mode setup, disconnect AC power from wall socket.
DATA COPY BY SD CARD
When exchanging A board, the data in original A board can be copied to SD card and then copy it in new A board.  When installing number of units in hotel or any facility, the data in master TV can be copied to SD card and then copy to other.
PREPARATION
  • Insert an empty SD card to your PC.
  • Right-click a blank area in SD card window, point New, and then click text document. A new file is created by default.
  • Right-click the new text document that you just created and select 'rename', and then change the name and extension of file to the following file name for (a) or (b) and press Enter.
  • File name: (a) For board replacement: bordreplace.pwd  (b) For Hotel:  hotel.pwd
Make only one file to prevent the operation error.  No any other file should be in SD card.
DATA COPY TO SD CARD FROM TV SET
  1. Turn ON the TV set.
  2. Insert SD card with a start up file(pwd file) to SD slot.
  3. Input a following password:  For board replacement: [2770].  For Hotel: [4850].  Data will be copied from TV set to SD card.  It will take up to 6 minutes to complete.
  4. After completion of copying to SD card, remote SD card from TV set.  
  5. Turn OFF the TV set. 
Following new folder will be created in SD card for data from TV set.
  • For board replacement: user_setup
  • For Hotel: hotel
DATA COPY FROM SD CARD TO TV SET
  • Turn ON the TV set.
  • Insert SD card with data ot SD slot.  On screen display will be appeared according to the Data Folder automatically.  
  • Input the following password for board replacement: [2771].  For Hotel: [2771].  Data will be copied from SD card to TV.
  • After completion of copying SD card, remove SD card from TV set.  For board replacement: Data will be deleted after copying.  For Hotel: Data will not be deleted, and can be used for other TVs.
Depending on the failure of boards, function of Data Copy for board replacement does not work.This function can be effective among the same model numbers.
POWER LED BLINKING 
  • 1 Blink => Back light SOS => LCD panel _ P-Board
  • 3 Blinks => Tuner SOS => A-Board _ P-Board.
  • 4 Blinks => P 15V SOS => A-Board _ P-Board
  • 7 Blinks => Sub 3.3V SOS => A-Board
  • 9 Blinks => Sound SOS => A-Board _ Speaker.
  • 10 Blinks => ZWE12 SOS => LCD Panel.
  • 13 Blinks => Emergency SOS => A-Board.
LCD PANEL TEST MODE
How to Enter & Exit
While pressing [Vol-ve]  button on the main unit, press Sub Menu button on the remote control 3 times within 2 seconds. Disconnect the AC plug to Exit.
How to Confirm
If abnormal picture is displayed, go to LCD panel test mode to display several test patterns. And then judge by the following method. Still abnormal picture is displayed, the cause must be LCD panel. If normal picture is displayed, the cause must be A board.
Test pattern is created by the circuit in the LCD panel.  In LCD panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signals.  If the normal picture is displayed, LCD panel must be okay, and cause of failure must be A board.
Posted By: FRANK at 02:31
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