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 !

Wednesday 6 February 2019

PANASONIC TX L55DT50E – SERVICE MODE – HOTEL MODE – LED BLINKING CODES - BACK COVER REMOVAL

Panasonic TX L55DT50E – Service Mode – Hotel Mode – LED blinking codes - Back cover removal

How to enter service mode – LED blinking timing chart – Panasonic TX L55DT50E – LED-LCD TV
Self Check
Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To enter Self-Check mode, keep pressing the down (-/v) button on the TV set and press the STATUS button on the remote control. To exit Self Check, switch off the TV set at the power button.
Power LED blinking timing chart
When abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by number of blinking of the Power LED on the front panel of the unit.
Service Mode Function
MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Service Menu.
How to enter and Exit the SERVICE
While pressing (-/v) button on the TV unit, press [0] on the remote control for 3 times within 2 seconds.
To exit from Service mode, press the exit button on remote control.
Key CommandPress the 3/4 button to change the adjustment values or function.Press the 1/2 button to step up/down through the functions and adjustmentsPress the numerical button VOLUME (+/-) to change of each option item.Press the OK button after each adjustment has been made to store the required values.
Service Tool Mode: How to access
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication will be cleared by [Self/check indication and forced to factory shipment setting].
Power ON Time, On/Off
Note: To display TIME/COUNT menu, highlight position, then press MUTE for 3sec.
Time: Cumulative power on time, indicated hour: minute by decimal.
On/Off: Number of On/Off switching by decimal.
Note: This indication will not be cleared by either of the self-checks or any other command.
Exit
Disconnect the AC cord from wall outlet or switch off the power with [Power] button on the main unit.
Hotel Mode
1. Purpose
Restrict a function for hotels.
2. Access command to the Hotel mode setup menu.
In order to display the Hotel mode setup menu, enter the following command (within 2 second).
[TV] : Vol.[Down] + [REMOTE] : AV (3 times)
Then, the Hotel mode setup menu is displayed.
3. To exit the “Hotel mode” menu press the EXIT button on remote control.
Data Copy from SD Card to TV set
1. Turn on the TV set.
2. Insert SD card with Data to SD slot.  On-screen Display will be appeared according to the Data folder automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2771
(b) For Hotel: 4851
Data will be copied from SD card to TV set.
4. After the completion of copying to SD card, remove SD card from TV set.
(a) For Board replacement: Data will be deleted after copying (Limited one copy).
(b) For Hotel: Data will not be deleted and can be used for other TVs.
5. Turn off the TV set.
Note:
1. Depending on the failure of boards, function of Data for board replacement does not work.
2. This function can be effective among the same model numbers.
Data Copy from TV set to SD Card
1. Turn on the TV set.
2. Insert SD card with a startup file (pwd file) to SD slot.  On-screen Display will be appeared according to the startup file automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2770
(b) For Hotel: 4850
Data will be copied from TV set to SD card. It takes around 2 to 6 minutes maximum for copying.
4. After the completion of copying to SD card, remove SD card from TV set.
5. Turn off the TV set.
Note:
Following new folder will be created in SD card for data from TV set.
(a) For Board replacement: user setup
(b) For Hotel: Hotel.
Data Copy by SD Card
Purpose
a) Board replacement (Copy the data when exchanging A-board):
When exchanging A-board, the data in original A-board can be copied to SD card and then copy to new A-board.
Following data can be copied.
User setting data (inc. Hotel mode setting data)
Channel scan data
Adjustment and factory preset data.
b) Hotel (Copy the data when installing a number of units in hotel or any facility):
When installing a number of units in hotel or any facility, the data in master TV can be copied to SD card and the copy to other TVs.
Following data can be copied.
User setting data (inc. Hotel mode setting data)
Channel scan data.
Preparation
Make pwd file as startup file for (a) or (b) in an empty SD card.
1. Insert an empty SD card to your PC.
2. Right-click a blank area in a SD card window, point to New, and then click text document. A new file is created by default (New Text Document.txt).
3. Right-click the new text document that you just created and select rename, and then change the name and extension of the file to the following file name (a) or (b) and press ENTER.
File name:
(a) For Board replacement: boardreplace.pwd
(b) For Hotel: hotel.pwd
Note:
Make only one file to prevent the operation error.
No any other file should be in SD card.
How to remove the back cover
Remove the 1 fixing screw and WIFI DONGLE.
Remove the 1 fixing screw and BT DONGLE.
Remove the 31 fixing screws, 4 caps and the backcover
How to remove the pedestal assembly.
Lay the main unit face down.
Remove the 2 fixing screws and the cover of the stand.
Remove the 4 fixing screws and the pedestal assembly
Posted By: FRANK at 02:10
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