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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You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

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- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
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-LR32C21 SERVICE MODE LED BLINKING CODE AND VOLTAGE TEST

PANASONIC TX-LR32C21 Service mode Led blinking code and voltage test

Contents of this article

How to enter to Service mode
Led blinking codes
Hotel mode

PANASONIC TX-LR32C21

Service Mode
How to enter into Service Mode
While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three 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.

RV-TOOL
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 except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].
POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for 3sec.
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Exit
1. Disconnect the AC cord from wall outlet.

Service Mode Adjustment
1. Press the ‘RECALL’ button on the remote control and press ‘-’ vol button on the LCD panel.
2. Press button number 1 on the remote control to select for Adjustment.
3. Self Check to Exit.
Self Check Mode
1. Press the ‘MENU’ button (on the remote control) and the ‘DOWN’ button on the LCD panel.
2. Press ON/OFF button on the panel to Exit.
Hotel Mode Adjustment
1. Press the ‘VOLUME DOWN’ button on the TV panel and simultaneously press the AV button on the remote control 3 times to enter Hotel Mode.
2. Set Hotel mode ‘on’, then press ‘EXIT’ to come out.

Check of the IIC bus lines
How to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control
for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Exit
Disconnect the AC cord from wall outlet.
Power LED Blinking
When an abnormality occurs, the protection circuit will operate and reset the unit to stand by mode. During this time, the defective block can be identified by the number of blinking times of the Power LED on the front panel of the unit as follow.

Blinking times	Contents	BOARD
1	Inverter_SOS	P BOARD
2	SUB 1.8V_SOS	A BOARD
3	SUB 1.2V_SOS	A BOARD
4	POWER_SOS	P/A BOARD
5	SUB 5V_SOS	A BOARD
9	TCON_SOS	A BOARD
10	SUB 3.3V_SENSE	A BOARD
11	DCDC_SOS	A BOARD
12	SOS	A BOARD

Voltage chart of A-board
Check voltage as follows at Reception state

VOLTAGE	TEST POINT	SPECIFICATION (Reception state)
STB3.3V	TP4716	3.3 ± 0.16 V
SUB5V	TP4724	5 ± 0.25 V
SOUND15V	TP2765	18 ± 2 V
5VS	TP2768	6.1 ± 0.3 V
SUB6V	TP2767	6.1 ± 0.3 V
TCON13.7V	TP7019	12.5 ± 2 V
TCON2.5V	TP4826	2.5 ± 0.12 V
TCON31V	TP7013	31 ± 3.1 V
TCON-6V	TP7014	-5.7 ± 0.6 V

Voltage chart of P-board

VOLTAGE	TEST POINT	SPECIFICATION (Reception state)
P32V	TP7503	31 ± 2.5 V
17V	TP7502	18 ± 2 V
DTV12V	TP7501	12.2 ± 0.6 V
TUNER6V	TP7601	6.1 ± 0.3 V
DC390V	TP7201	390 ± 10 V