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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Wednesday, 6 March 2019

PANASONIC TX-32LX85P - TX-R37LX85 SERVICE MODE LED BLINKING CODE AND VOLTAGE ADJUSTMENTS

PANASONIC TX-32LX85P - TX-R37LX85 Service mode led blinking code and Voltage adjustments

Category: LCD Television repair and service

Contents of this article

How to enter to service mode
Led blinking code
Testing Voltages

PANASONIC TX-32LX85P - TX-R37LX85

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
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	LCD PANEL A BOARD
2	FAN_SOS	A BOARD
3	SOS	A BOARD
5	MAIN_9V	A BOARD
6	SUB_5V	A BOARD V BOARD, P BOARD
7	SUB_3.3V	A BOARD
8	MAIN_3.3V	A BOARD
9	SOUND_SOS	A BOARD
10	HQ1L_SOS	A BOARD
13	EMERGENCY SOS	A 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
While pressing (-/v) button on TV unit, press 0 on the remote control for 3 times within 2 seconds.
Note:
To exit from Service mode, press the exit button on 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 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 “Contrast” adj. In SERVICE mode.
3. Start adjusting by using Yellow Key.
4. If the adjustment finished normally, the letter of Contrast will change from red to black

Setting Inspection
Voltage Confirmation

P board

Description	Test point	Position	Normal mode
Panel 12V	TP863	P2, pins 16, 17	12,0V +/- 0,35V
16V_Audio	TP858	P2, pins 20, 21	16V +/- 1V
SUB_9V	TP860	P2, pins 11, 12	9V +/- 0,25V
STBY_5V6	TP853	P2, pins 1, 2	5,65V +/- 0,25V
24V_IN	TP856	P2, pins 7, 8	24V +/- 1,5V

A board

Description	Test point	Normal mode
SUB 1,8V	TP5602	1,76V – 1,85V
SUB 1,2V	TP5601	1,22V – 1,27V
SUB 3,3V	TP5600	3,19V – 3,39V
SUB5V	TP1011	4,75V – 5,25V
DVDDIO3,3V/TVDD3,3V	TP4531	3,23V – 3,37V
BT30V	TP2905	29,5V – 31,5V
DVDD1,8V	TP4529	1,77V – 1,83V
AUD3,3V	TP2031	3,23V – 3,37V
DVDD1,8V	TP2032	1,77V – 1,83V
5V	TP2030	4,75V – 5,25V
STB 3,3V	TP7601	3,23V – 3,37V
MHQLV3,3V	TP4235	3,24V – 3,41V
MHQDDRR2,5V	TP4210	2,44V – 2,56V
HQ3,3V	TP4200	3,18V – 3,47V
MHQVD1,2V	TP4201	1,19V – 1,26V
MHQVD3,3V	TP4300	3,24V – 3,41