Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

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 !

Thursday, 7 March 2019

PANASONIC TX-L55WT60Y SERVICE MODE AND ADJUSTMENTS

PANASONIC TX-L55WT60Y Service mode and adjustments

PANASONIC TX-L55WT60Y

Specification of KEY for CI Plus, DTCP-IP, One-to-One, Netflix, Widewine and HDCP
General information
1. NAND FLASH (IC8900) for spare parts has the seed of KEY for each.
2. The final KEY data will be generated by Pro4 IC (IC8000) when SELF CHECK was done and are stored in both Pro4 IC (IC8000) and NAND FLASH (IC8900).
All KEYs are not generated for all models.
The necessary KEY are only generated and stored depend on the feature of models.
Replacement of ICs
When Pro4 IC (IC8000) is replaced, NAND FLASH (IC8900) should be also replaced with new one the same time.
When NAND FLASH (IC8900) is replaced, Pro4 IC (IC8000) is not necessary to be replaced the same time.
After the replacement of IC, SELF CHECK should be done to generate the final KEY data.
How to SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press the MENU button on the remote control for more than 3 seconds.
TV will be forced to the factory shipment setting after this SELF CHECK.

USB HDD Recording:
General information:
Digital TV programmes can be recorded in USB HDD. A One-to-One key generated in A-board by SELF CHECK binds TV and USB-HDD for communication. That key is only one key for them. If the key is difference, TV can not access USB-HDD.
Caution:
New key will be generated by following SELF CHECK and previous TV programmes recorded in USB HDD will not be viewed.
SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press the MENU button on the remote control for more than 3 seconds.

A board

Description	Test point	Voltage
P15V	TP4003 / TP4004	15.07V – 16.65V
STB5.8V	TP2017 / TP5205	5.05V - 5.59V
STB3.3V	TP5002	3.12V – 3.45V
STB1.1V	TP5003	1.08V – 1.20V
SUB9V	TP5004	8.52V – 9.42V
SUB5V	TP5420	4.91V - 5.43V
SUB3.3V	TP5400	3.16V – 3.50V
SUB1.8V	TP8714	1.76V – 1.94V
SUB1.5V	TP8101	1.39V – 1.53V
SUB1.1V	TP8100	1.08V – 1.20V
USB5V	TP5440	4.94V – 5.46V
SD3.3V	TP8671	3.20V – 3.54V
M3.3V	TP8492	3.14V – 3.48V
M1.2V	TP8406	1.14V – 1.26V
HDMI3.3V	TP8701	3.16V – 3.50V
SUB_AI_3.3V	TP2002	3.16V – 3.50V
SAT_2.5V	TP5705	2.37V – 2.63V
SAT_1.2V	TP5703	1.23V – 1.37V
DMD_1.2/1.1V	TP5702	1.11V – 1.23V

P board

Description	Test point	Voltage*	Voltage**
40V (PANEL)	TP7401 and GND TP7413	<43V	40V ± 3V
16V	TP7410 and GND TP7413	<1V	15.7V ± 0.6V
5VS	TP7501 and GND TP7413	5.3V ± 0.2V	5.3V ± 0.2V
VLED	TP7409 and GND TP7805	<43V	84V ± 5V
PFC	TP7202 and GND TP7203***	<340V	390V ± 15V

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 into Service Mode
While pressing [VOLUME ( - )] button on the main unit, press the [RED] button on the remote control for 3 times within 2 seconds.
How to exit
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

Key Command
# Press the 3/4 button to change the adjustment values or function.
# Press the 1/2 button to step up/down through the functions and adjustments
# Press 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.

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
Access command to the Hotel mode setup menu. In order to display the Hotel mode setup menu, please enter the following command (within 2 second).
[TV] : Vol.[Down] + [REMOTE] : AV (3 times)

To exit the “Hotel mode”: Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

Data Copy from TV set to USB Memory
1. Turn on the TV set.
2. Insert USB Memory with a startup file (pwd file) to USB Terminal. 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 USB Memory. It takes around 2 to 6 minutes maximum for copying.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
5. Turn off the TV set.
Note:
Following new folder will be created in USB Memory for data from TV set.
(a) For Board replacement: user_setup
(b) For Hotel: hotel

Data Copy from USB Memory to TV set
1. Turn on the TV set.
2. Insert USB Memory with Data to USB Terminal.
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 USB Memory to TV set.
4. After the completion of copying to USB Memory, remove USB Memory 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.