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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Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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-32LX70P - TX-26LX70F SERVICE MODE LED BLINKING CODE

PANASONIC TX-32LX70P - TX-26LX70F Service mode led blinking code

PANASONIC TX-32LX70P - TX-26LX70F

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 STATUS button on the remote control and press the down (-/v) button on the TV set. To exit Self Check, switch off the TV set at the power button.

Power LED blinking
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.

Blinking times	Contents	Check point
1	Inverter SOS	POWER UNIT LCD PANEL
3	BT_30V, SOUND 18V, PANEL 12V	AP BOARD, H BOARD
4	SUB 9V	AP BOARD, H BOARD DG BOARD
5	SUB 5V	AP BOARD, H BOARD DG BOARD
6	MAIN 9V	AP BOARD, DG BOARD
8	MAIN 3,3V	AP BOARD, H BOARD DG BOARD

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 SERVICE 1
In main menu, move to choose sound menu, set BASS to MAXIMUM, and set TREBLE to MINIMUM. Simultaneously press INDEX button on remote control and DOWN button (-/v) on the TV set.
How to enter SERVICE 2
Enter the SERVICE 1 mode.
Press the GREEN button to step down to the last menu position.
Set the program position to 99.
Press HOLD button on remote control.
Note:
To exit from Service mode, press N or Power button on remote control.

Key Command
# Press the RED/GREEN button to step up/down through the functions and adjustments.
# Press the YELLOW/BLUE button to change the adjustment values or function.
# Press the numerical button 1-7 to change 0/1 of each option item.
# Press the OK button after each adjustment has been made to store the required values.

Subcontrast adjustment
1. Receive PAL colour bar (100% white) RF signal.
2. Enter “Sub-Contrast” adj. In SERVICE 1 mode.
3. Start adjusting by using Blue Key.
4. If the adjustment finished normally, the letter of “Sub-Contrast” will change from red to black

Voltage Confirmation

AP board
Normal mode

Test point	Position	Voltage
TP7201	Cathode D7102	7V ± 1V
TP7301	J218	9V ± 0,45V
TP7303	J415	5,1V ± 0,25V
TP7401	JS7958	18,8V ± 0,8V
TP7403	J213	3,3V ± 0,15V
TP7501	JS7503	5,1V ± 0,25V
TP7502	J221	9V ± 0,45V
TP7601	J406	31,5V ± 2,5V
TP7702	JS7702	12,2V ± 0,6V

Standby mode

Test point	Position	Voltage
TP7201	Cathode D7102	10V ± 2V
TP7301	J218	max 2V
TP7303	J415	max 2V
TP7401	JS7958	max 2V
TP7403	J213	max 2V
TP7501	JS7503	max 2V
TP7502	J221	max 2V
TP7601	J406	max 4,5V
TP7702	JS7702	max 2V