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!

©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 !

Wednesday 27 March 2019

PANASONIC TH-50PX80U _ SERVICE MODE _ HOTEL MODE _ LED BLINKING CODES & OTHER DETAILS

PANASONIC TH-50PX80U _ SERVICE MODE _ HOTEL MODE _ LED BLINKING CODES & OTHER DETAILS




TO ENTER SERVICE MODE

  • While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds.
KEY COMMANDS
  • 1. button...Main items Selection in forward direction
  • 2. button...Main items Selection in reverse direction
  • 3. button...Sub items Selection in forward direction
  • 4. button...Sub items Selection in reverse direction
  1. Value is shown as a hexadecimal number.
  2. Preset value differs depending on models.
  3. After entering the adjustment mode, take note of the value in each item before starting adjustment.
TO EXIT SERVICE MODE
  • Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
SERVICE TOOL MODE
  • Select “SRV-TOOL” in Service Mode.
  • Press [OK] button on the remote control.
DISPLAY OF SOS HISTORY

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
Note : This indication will not be cleared by either of the self-check or any other command.

TO EXIT: Disconnect the AC cord from wall outlet.

HOTEL MODE
  1. In order to display the Hotel mode setup menu, enter the following command (within 2 second).
  2. [TV] : Vol. “Down” + [REMOTE] : TV/VIDEO (3 times)
  3. Then, the Hotel mode setup menu is displayed.
  4. To exit the Hotel mode setup menu Disconnect AC power cord from wall outlet.
TROUBLESHOOTING

Use the self-check function to test the unit.
Checking the IIC bus lines
Power LED Blinking timing

CHECK OF IIC BUS LINE
  • 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.
  • TO EXIT: Disconnect the AC cord from wall outlet.
POWER LED BLINKING TIMING CHART
  • When an 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 the number of blinks of the Power LED on the front panel of the unit.
BLINKING TIMES
CONTENTS
CHECK POINT
1
No particular check point
Panel status.
STB 5V Sense Time Out


A-Board
2
15V SOS
A-Board
3
3.3V SOS
A-Board
4
Power SOS
P-Board
5
5V SOS
A_Board
6
Driver SOS-1 [SC energy recovery unit]
SU-Board
SD-Board
SC-Board
7
Driver SOS-2 [SC floating voltage area]
SU-Board
SD-Board
SC-Board
8
Driver SOS-3 [SS energy recovery unit]
SS-Board
SS2-Board
SS-3 Board
9
Panel Config SOS
  =====



10
Sub 5V SOS

Main 3.3V SOS
DTV 9V SOS
Tuner Power SOS


A-Board
11
Won’t occur

12
Sound SOS
A-Board
13
Communication error with IC8001 [Pesks Lite 2]

A-Board
Posted By: FRANK at 02:29
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